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id="toc-Subatomic_scale" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Subatomic_scale"> <div class="vector-toc-text"> 2.1 Subatomic scale </div> </a> <ul id="toc-Subatomic_scale-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Atomic_to_cellular_scale" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Atomic_to_cellular_scale"> <div class="vector-toc-text"> 2.2 Atomic to cellular scale </div> </a> <ul id="toc-Atomic_to_cellular_scale-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Cellular_to_human_scale" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Cellular_to_human_scale"> <div class="vector-toc-text"> 2.3 Cellular to human scale </div> </a> <ul id="toc-Cellular_to_human_scale-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Human_to_astronomical_scale" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Human_to_astronomical_scale"> <div class="vector-toc-text"> 2.4 Human to astronomical scale </div> </a> <ul id="toc-Human_to_astronomical_scale-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Astronomical_scale" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Astronomical_scale"> <div class="vector-toc-text"> 2.5 Astronomical scale </div> </a> <ul id="toc-Astronomical_scale-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-1_quectometre_and_less" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_quectometre_and_less"> <div class="vector-toc-text"> 3 1 quectometre and less </div> </a> <ul id="toc-1_quectometre_and_less-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_rontometre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_rontometre"> <div class="vector-toc-text"> 4 1 rontometre </div> </a> <ul id="toc-1_rontometre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_rontometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_rontometres"> <div class="vector-toc-text"> 5 10 rontometres </div> </a> <ul id="toc-10_rontometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_yoctometre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_yoctometre"> <div class="vector-toc-text"> 6 1 yoctometre </div> </a> <ul id="toc-1_yoctometre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_zeptometre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_zeptometre"> <div class="vector-toc-text"> 7 1 zeptometre </div> </a> <ul id="toc-1_zeptometre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_zeptometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_zeptometres"> <div class="vector-toc-text"> 8 10 zeptometres </div> </a> <ul id="toc-10_zeptometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_zeptometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_zeptometres"> <div class="vector-toc-text"> 9 100 zeptometres </div> </a> <ul id="toc-100_zeptometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_attometre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_attometre"> <div class="vector-toc-text"> 10 1 attometre </div> </a> <ul id="toc-1_attometre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_attometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_attometres"> <div class="vector-toc-text"> 11 10 attometres </div> </a> <ul id="toc-10_attometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_attometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_attometres"> <div class="vector-toc-text"> 12 100 attometres </div> </a> <ul id="toc-100_attometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_femtometre_(or_1_fermi)" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_femtometre_(or_1_fermi)"> <div class="vector-toc-text"> 13 1 femtometre (or 1 fermi) </div> </a> <ul id="toc-1_femtometre_(or_1_fermi)-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_femtometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_femtometres"> <div class="vector-toc-text"> 14 10 femtometres </div> </a> <ul id="toc-10_femtometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_femtometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_femtometres"> <div class="vector-toc-text"> 15 100 femtometres </div> </a> <ul id="toc-100_femtometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_picometre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_picometre"> <div class="vector-toc-text"> 16 1 picometre </div> </a> <ul id="toc-1_picometre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_picometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_picometres"> <div class="vector-toc-text"> 17 10 picometres </div> </a> <ul id="toc-10_picometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_picometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_picometres"> <div class="vector-toc-text"> 18 100 picometres </div> </a> <ul id="toc-100_picometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_nanometre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_nanometre"> <div class="vector-toc-text"> 19 1 nanometre </div> </a> <ul id="toc-1_nanometre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_nanometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_nanometres"> <div class="vector-toc-text"> 20 10 nanometres </div> </a> <ul id="toc-10_nanometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_nanometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_nanometres"> <div class="vector-toc-text"> 21 100 nanometres </div> </a> <ul id="toc-100_nanometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_micrometre_(or_1_micron)" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_micrometre_(or_1_micron)"> <div class="vector-toc-text"> 22 1 micrometre (or 1 micron) </div> </a> <ul id="toc-1_micrometre_(or_1_micron)-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_micrometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_micrometres"> <div class="vector-toc-text"> 23 10 micrometres </div> </a> <ul id="toc-10_micrometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_micrometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_micrometres"> <div class="vector-toc-text"> 24 100 micrometres </div> </a> <ul id="toc-100_micrometres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_millimetre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_millimetre"> <div class="vector-toc-text"> 25 1 millimetre </div> </a> <ul id="toc-1_millimetre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_centimetre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_centimetre"> <div class="vector-toc-text"> 26 1 centimetre </div> </a> <ul id="toc-1_centimetre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_decimetre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_decimetre"> <div class="vector-toc-text"> 27 1 decimetre </div> </a> <button aria-controls="toc-1_decimetre-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle 1 decimetre subsection </button> <ul id="toc-1_decimetre-sublist" class="vector-toc-list"> <li id="toc-Conversions" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversions"> <div class="vector-toc-text"> 27.1 Conversions </div> </a> <ul id="toc-Conversions-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Wavelengths" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Wavelengths"> <div class="vector-toc-text"> 27.2 Wavelengths </div> </a> <ul id="toc-Wavelengths-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Human-defined_scales_and_structures" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Human-defined_scales_and_structures"> <div class="vector-toc-text"> 27.3 Human-defined scales and structures </div> </a> <ul id="toc-Human-defined_scales_and_structures-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nature" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nature"> <div class="vector-toc-text"> 27.4 Nature </div> </a> <ul id="toc-Nature-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Astronomical" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Astronomical"> <div class="vector-toc-text"> 27.5 Astronomical </div> </a> <ul id="toc-Astronomical-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-1_metre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_metre"> <div class="vector-toc-text"> 28 1 metre </div> </a> <button aria-controls="toc-1_metre-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle 1 metre subsection </button> <ul id="toc-1_metre-sublist" class="vector-toc-list"> <li id="toc-Conversions_2" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversions_2"> <div class="vector-toc-text"> 28.1 Conversions </div> </a> <ul id="toc-Conversions_2-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Human-defined_scales_and_structures_2" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Human-defined_scales_and_structures_2"> <div class="vector-toc-text"> 28.2 Human-defined scales and structures </div> </a> <ul id="toc-Human-defined_scales_and_structures_2-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sports" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Sports"> <div class="vector-toc-text"> 28.3 Sports </div> </a> <ul id="toc-Sports-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nature_2" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nature_2"> <div class="vector-toc-text"> 28.4 Nature </div> </a> <ul id="toc-Nature_2-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Astronomical_2" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Astronomical_2"> <div class="vector-toc-text"> 28.5 Astronomical </div> </a> <ul id="toc-Astronomical_2-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-1_decametre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_decametre"> <div class="vector-toc-text"> 29 1 decametre </div> </a> <button aria-controls="toc-1_decametre-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle 1 decametre subsection </button> <ul id="toc-1_decametre-sublist" class="vector-toc-list"> <li id="toc-Conversions_3" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversions_3"> <div class="vector-toc-text"> 29.1 Conversions </div> </a> <ul id="toc-Conversions_3-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Human-defined_scales_and_structures_3" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Human-defined_scales_and_structures_3"> <div class="vector-toc-text"> 29.2 Human-defined scales and structures </div> </a> <ul id="toc-Human-defined_scales_and_structures_3-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sports_2" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Sports_2"> <div class="vector-toc-text"> 29.3 Sports </div> </a> <ul id="toc-Sports_2-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nature_3" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nature_3"> <div class="vector-toc-text"> 29.4 Nature </div> </a> <ul id="toc-Nature_3-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Astronomical_3" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Astronomical_3"> <div class="vector-toc-text"> 29.5 Astronomical </div> </a> <ul id="toc-Astronomical_3-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-1_hectometre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_hectometre"> <div class="vector-toc-text"> 30 1 hectometre </div> </a> <button aria-controls="toc-1_hectometre-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle 1 hectometre subsection </button> <ul id="toc-1_hectometre-sublist" class="vector-toc-list"> <li id="toc-Conversions_4" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversions_4"> <div class="vector-toc-text"> 30.1 Conversions </div> </a> <ul id="toc-Conversions_4-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Human-defined_scales_and_structures_4" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Human-defined_scales_and_structures_4"> <div class="vector-toc-text"> 30.2 Human-defined scales and structures </div> </a> <ul id="toc-Human-defined_scales_and_structures_4-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sports_3" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Sports_3"> <div class="vector-toc-text"> 30.3 Sports </div> </a> <ul id="toc-Sports_3-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nature_4" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nature_4"> <div class="vector-toc-text"> 30.4 Nature </div> </a> <ul id="toc-Nature_4-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Astronomical_4" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Astronomical_4"> <div class="vector-toc-text"> 30.5 Astronomical </div> </a> <ul id="toc-Astronomical_4-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-1_kilometre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_kilometre"> <div class="vector-toc-text"> 31 1 kilometre </div> </a> <button aria-controls="toc-1_kilometre-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle 1 kilometre subsection </button> <ul id="toc-1_kilometre-sublist" class="vector-toc-list"> <li id="toc-Conversions_5" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversions_5"> <div class="vector-toc-text"> 31.1 Conversions </div> </a> <ul id="toc-Conversions_5-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Human-defined_scales_and_structures_5" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Human-defined_scales_and_structures_5"> <div class="vector-toc-text"> 31.2 Human-defined scales and structures </div> </a> <ul id="toc-Human-defined_scales_and_structures_5-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nature_5" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nature_5"> <div class="vector-toc-text"> 31.3 Nature </div> </a> <ul id="toc-Nature_5-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Geographical" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Geographical"> <div class="vector-toc-text"> 31.4 Geographical </div> </a> <ul id="toc-Geographical-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Astronomical_5" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Astronomical_5"> <div class="vector-toc-text"> 31.5 Astronomical </div> </a> <ul id="toc-Astronomical_5-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-10_kilometres_(1_myriametre)" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_kilometres_(1_myriametre)"> <div class="vector-toc-text"> 32 10 kilometres (1 myriametre) </div> </a> <button aria-controls="toc-10_kilometres_(1_myriametre)-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle 10 kilometres (1 myriametre) subsection </button> <ul id="toc-10_kilometres_(1_myriametre)-sublist" class="vector-toc-list"> <li id="toc-Conversions_6" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversions_6"> <div class="vector-toc-text"> 32.1 Conversions </div> </a> <ul id="toc-Conversions_6-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sports_4" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Sports_4"> <div class="vector-toc-text"> 32.2 Sports </div> </a> <ul id="toc-Sports_4-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Human-defined_scales_and_structures_6" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Human-defined_scales_and_structures_6"> <div class="vector-toc-text"> 32.3 Human-defined scales and structures </div> </a> <ul id="toc-Human-defined_scales_and_structures_6-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Geographical_2" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Geographical_2"> <div class="vector-toc-text"> 32.4 Geographical </div> </a> <ul id="toc-Geographical_2-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Astronomical_6" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Astronomical_6"> <div class="vector-toc-text"> 32.5 Astronomical </div> </a> <ul id="toc-Astronomical_6-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-100_kilometres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_kilometres"> <div class="vector-toc-text"> 33 100 kilometres </div> </a> <button aria-controls="toc-100_kilometres-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle 100 kilometres subsection </button> <ul id="toc-100_kilometres-sublist" class="vector-toc-list"> <li id="toc-Conversions_7" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversions_7"> <div class="vector-toc-text"> 33.1 Conversions </div> </a> <ul id="toc-Conversions_7-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Human-defined_scales_and_structures_7" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Human-defined_scales_and_structures_7"> <div class="vector-toc-text"> 33.2 Human-defined scales and structures </div> </a> <ul id="toc-Human-defined_scales_and_structures_7-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Geographical_3" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Geographical_3"> <div class="vector-toc-text"> 33.3 Geographical </div> </a> <ul id="toc-Geographical_3-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Astronomical_7" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Astronomical_7"> <div class="vector-toc-text"> 33.4 Astronomical </div> </a> <ul id="toc-Astronomical_7-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-1_megametre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_megametre"> <div class="vector-toc-text"> 34 1 megametre </div> </a> <button aria-controls="toc-1_megametre-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle 1 megametre subsection </button> <ul id="toc-1_megametre-sublist" class="vector-toc-list"> <li id="toc-Conversions_8" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversions_8"> <div class="vector-toc-text"> 34.1 Conversions </div> </a> <ul id="toc-Conversions_8-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Human-defined_scales_and_structures_8" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Human-defined_scales_and_structures_8"> <div class="vector-toc-text"> 34.2 Human-defined scales and structures </div> </a> <ul id="toc-Human-defined_scales_and_structures_8-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sports_5" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Sports_5"> <div class="vector-toc-text"> 34.3 Sports </div> </a> <ul id="toc-Sports_5-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Geographical_4" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Geographical_4"> <div class="vector-toc-text"> 34.4 Geographical </div> </a> <ul id="toc-Geographical_4-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Astronomical_8" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Astronomical_8"> <div class="vector-toc-text"> 34.5 Astronomical </div> </a> <ul id="toc-Astronomical_8-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-10_megametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_megametres"> <div class="vector-toc-text"> 35 10 megametres </div> </a> <button aria-controls="toc-10_megametres-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle 10 megametres subsection </button> <ul id="toc-10_megametres-sublist" class="vector-toc-list"> <li id="toc-Conversions_9" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Conversions_9"> <div class="vector-toc-text"> 35.1 Conversions </div> </a> <ul id="toc-Conversions_9-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Human-defined_scales_and_structures_9" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Human-defined_scales_and_structures_9"> <div class="vector-toc-text"> 35.2 Human-defined scales and structures </div> </a> <ul id="toc-Human-defined_scales_and_structures_9-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Geographical_5" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Geographical_5"> <div class="vector-toc-text"> 35.3 Geographical </div> </a> <ul id="toc-Geographical_5-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Astronomical_9" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Astronomical_9"> <div class="vector-toc-text"> 35.4 Astronomical </div> </a> <ul id="toc-Astronomical_9-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-100_megametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_megametres"> <div class="vector-toc-text"> 36 100 megametres </div> </a> <ul id="toc-100_megametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_gigametre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_gigametre"> <div class="vector-toc-text"> 37 1 gigametre </div> </a> <ul id="toc-1_gigametre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_gigametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_gigametres"> <div class="vector-toc-text"> 38 10 gigametres </div> </a> <ul id="toc-10_gigametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_gigametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_gigametres"> <div class="vector-toc-text"> 39 100 gigametres </div> </a> <ul id="toc-100_gigametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_terametre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_terametre"> <div class="vector-toc-text"> 40 1 terametre </div> </a> <ul id="toc-1_terametre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_terametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_terametres"> <div class="vector-toc-text"> 41 10 terametres </div> </a> <ul id="toc-10_terametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_terametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_terametres"> <div class="vector-toc-text"> 42 100 terametres </div> </a> <ul id="toc-100_terametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_petametre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_petametre"> <div class="vector-toc-text"> 43 1 petametre </div> </a> <ul id="toc-1_petametre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_petametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_petametres"> <div class="vector-toc-text"> 44 10 petametres </div> </a> <ul id="toc-10_petametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_petametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_petametres"> <div class="vector-toc-text"> 45 100 petametres </div> </a> <ul id="toc-100_petametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_exametre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_exametre"> <div class="vector-toc-text"> 46 1 exametre </div> </a> <ul id="toc-1_exametre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_exametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_exametres"> <div class="vector-toc-text"> 47 10 exametres </div> </a> <ul id="toc-10_exametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_exametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_exametres"> <div class="vector-toc-text"> 48 100 exametres </div> </a> <ul id="toc-100_exametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_zettametre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_zettametre"> <div class="vector-toc-text"> 49 1 zettametre </div> </a> <ul id="toc-1_zettametre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_zettametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_zettametres"> <div class="vector-toc-text"> 50 10 zettametres </div> </a> <ul id="toc-10_zettametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_zettametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_zettametres"> <div class="vector-toc-text"> 51 100 zettametres </div> </a> <ul id="toc-100_zettametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_yottametre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_yottametre"> <div class="vector-toc-text"> 52 1 yottametre </div> </a> <ul id="toc-1_yottametre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-10_yottametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#10_yottametres"> <div class="vector-toc-text"> 53 10 yottametres </div> </a> <ul id="toc-10_yottametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-100_yottametres" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#100_yottametres"> <div class="vector-toc-text"> 54 100 yottametres </div> </a> <ul id="toc-100_yottametres-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-1_ronnametre" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#1_ronnametre"> <div class="vector-toc-text"> 55 1 ronnametre </div> </a> <ul id="toc-1_ronnametre-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> 56 See also </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Notes" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#Notes"> <div class="vector-toc-text"> 57 Notes </div> </a> <ul id="toc-Notes-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> 58 References </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> 59 External links </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" > Toggle the table of contents </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading">Orders of magnitude (length)</h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 22 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-22" aria-hidden="true" > 22 languages </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Grootteordes_(lengte)" title="Grootteordes (lengte) – Afrikaans" lang="af" hreflang="af" data-title="Grootteordes (lengte)" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target">Afrikaans</a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D9%82%D9%8A%D9%85_%D8%A3%D8%B3%D9%8A%D8%A9_(%D8%B7%D9%88%D9%84)" title="قيم أسية (طول) – Arabic" lang="ar" hreflang="ar" data-title="قيم أسية (طول)" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target">العربية</a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%AE%E0%A6%BE%E0%A6%A8%E0%A7%87%E0%A6%B0_%E0%A6%95%E0%A7%8D%E0%A6%B0%E0%A6%AE_(%E0%A6%A6%E0%A7%88%E0%A6%B0%E0%A7%8D%E0%A6%98%E0%A7%8D%E0%A6%AF)" title="মানের ক্রম (দৈর্ঘ্য) – Bangla" lang="bn" hreflang="bn" data-title="মানের ক্রম (দৈর্ঘ্য)" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target">বাংলা</a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Red_du%C5%BEinskih_veli%C4%8Dina" title="Red dužinskih veličina – Bosnian" lang="bs" hreflang="bs" data-title="Red dužinskih veličina" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target">Bosanski</a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/%C5%98%C3%A1dov%C3%A1_velikost_(d%C3%A9lka)" title="Řádová velikost (délka) – Czech" lang="cs" hreflang="cs" data-title="Řádová velikost (délka)" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target">Čeština</a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Liste_von_Gr%C3%B6%C3%9Fenordnungen_der_L%C3%A4nge" title="Liste von Größenordnungen der Länge – German" lang="de" hreflang="de" data-title="Liste von Größenordnungen der Länge" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target">Deutsch</a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Pikkuste_suurusj%C3%A4rgud" title="Pikkuste suurusjärgud – Estonian" lang="et" hreflang="et" data-title="Pikkuste suurusjärgud" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target">Eesti</a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/%C3%93rdenes_de_magnitud_(longitud)" title="Órdenes de magnitud (longitud) – Spanish" lang="es" hreflang="es" data-title="Órdenes de magnitud (longitud)" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target">Español</a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D8%B1%D8%AA%D8%A8%D9%87_%D8%A8%D8%B2%D8%B1%DA%AF%DB%8C_(%D8%B7%D9%88%D9%84)" title="مرتبه بزرگی (طول) – Persian" lang="fa" hreflang="fa" data-title="مرتبه بزرگی (طول)" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target">فارسی</a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Ordres_de_grandeur_de_longueur" title="Ordres de grandeur de longueur – French" lang="fr" hreflang="fr" data-title="Ordres de grandeur de longueur" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target">Français</a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%81%AC%EA%B8%B0_%EC%A0%95%EB%8F%84_(%EA%B8%B8%EC%9D%B4)" title="크기 정도 (길이) – Korean" lang="ko" hreflang="ko" data-title="크기 정도 (길이)" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target">한국어</a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Ordini_di_grandezza_(lunghezza)" title="Ordini di grandezza (lunghezza) – Italian" lang="it" hreflang="it" data-title="Ordini di grandezza (lunghezza)" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target">Italiano</a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%89%E0%B2%A6%E0%B3%8D%E0%B2%A6%E0%B2%A6_%E0%B2%85%E0%B2%B3%E0%B2%A4%E0%B3%86%E0%B2%97%E0%B2%B3%E0%B3%81" title="ಉದ್ದದ ಅಳತೆಗಳು – Kannada" lang="kn" hreflang="kn" data-title="ಉದ್ದದ ಅಳತೆಗಳು" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target">ಕನ್ನಡ</a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Nagys%C3%A1grendek_list%C3%A1ja_(hossz%C3%BAs%C3%A1g)" title="Nagyságrendek listája (hosszúság) – Hungarian" lang="hu" hreflang="hu" data-title="Nagyságrendek listája (hosszúság)" data-language-autonym="Magyar" data-language-local-name="Hungarian" class="interlanguage-link-target">Magyar</a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Peringkat_magnitud_(panjang)" title="Peringkat magnitud (panjang) – Malay" lang="ms" hreflang="ms" data-title="Peringkat magnitud (panjang)" data-language-autonym="Bahasa Melayu" data-language-local-name="Malay" class="interlanguage-link-target">Bahasa Melayu</a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E9%95%B7%E3%81%95%E3%81%AE%E6%AF%94%E8%BC%83" title="長さの比較 – Japanese" lang="ja" hreflang="ja" data-title="長さの比較" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target">日本語</a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Ordens_de_magnitude_para_comprimento" title="Ordens de magnitude para comprimento – Portuguese" lang="pt" hreflang="pt" data-title="Ordens de magnitude para comprimento" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target">Português</a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Ordini_di_grannizza_(lunchizza)" title="Ordini di grannizza (lunchizza) – Sicilian" lang="scn" hreflang="scn" data-title="Ordini di grannizza (lunchizza)" data-language-autonym="Sicilianu" data-language-local-name="Sicilian" class="interlanguage-link-target">Sicilianu</a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%AD%E0%B8%B1%E0%B8%99%E0%B8%94%E0%B8%B1%E0%B8%9A%E0%B8%82%E0%B8%AD%E0%B8%87%E0%B8%82%E0%B8%99%E0%B8%B2%E0%B8%94_(%E0%B8%84%E0%B8%A7%E0%B8%B2%E0%B8%A1%E0%B8%A2%E0%B8%B2%E0%B8%A7)" title="อันดับของขนาด (ความยาว) – Thai" lang="th" hreflang="th" data-title="อันดับของขนาด (ความยาว)" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target">ไทย</a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9F%D0%BE%D1%80%D1%8F%D0%B4%D0%BA%D0%B8_%D0%B2%D0%B5%D0%BB%D0%B8%D1%87%D0%B8%D0%BD_(%D0%B4%D0%BE%D0%B2%D0%B6%D0%B8%D0%BD%D0%B0)" title="Порядки величин (довжина) – Ukrainian" lang="uk" 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style="display:none">Comparison of a wide range of lengths</div> <style data-mw-deduplicate="TemplateStyles:r1251242444">.mw-parser-output .ambox{border:1px solid #a2a9b1;border-left:10px solid #36c;background-color:#fbfbfb;box-sizing:border-box}.mw-parser-output .ambox+link+.ambox,.mw-parser-output .ambox+link+style+.ambox,.mw-parser-output .ambox+link+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+style+.ambox,.mw-parser-output .ambox+.mw-empty-elt+link+link+.ambox{margin-top:-1px}html body.mediawiki .mw-parser-output .ambox.mbox-small-left{margin:4px 1em 4px 0;overflow:hidden;width:238px;border-collapse:collapse;font-size:88%;line-height:1.25em}.mw-parser-output .ambox-speedy{border-left:10px solid #b32424;background-color:#fee7e6}.mw-parser-output .ambox-delete{border-left:10px solid #b32424}.mw-parser-output .ambox-content{border-left:10px solid #f28500}.mw-parser-output .ambox-style{border-left:10px solid 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Please help <a href="/wiki/Special:EditPage/Orders_of_magnitude_(length)" title="Special:EditPage/Orders of magnitude (length)">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a>. Unsourced material may be challenged and removed. Find sources: <a rel="nofollow" class="external text" href="https://www.google.com/search?as_eq=wikipedia&q=%22Orders+of+magnitude%22+length">"Orders of magnitude" length</a> – <a rel="nofollow" class="external text" href="https://www.google.com/search?tbm=nws&q=%22Orders+of+magnitude%22+length+-wikipedia&tbs=ar:1">news</a> · <a rel="nofollow" class="external text" href="https://www.google.com/search?&q=%22Orders+of+magnitude%22+length&tbs=bkt:s&tbm=bks">newspapers</a> · <a rel="nofollow" class="external text" href="https://www.google.com/search?tbs=bks:1&q=%22Orders+of+magnitude%22+length+-wikipedia">books</a> · <a rel="nofollow" class="external text" href="https://scholar.google.com/scholar?q=%22Orders+of+magnitude%22+length">scholar</a> · <a rel="nofollow" class="external text" href="https://www.jstor.org/action/doBasicSearch?Query=%22Orders+of+magnitude%22+length&acc=on&wc=on">JSTOR</a> (January 2020) (<a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a>)</div></td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Orders_of_magnitude_(english_annotations).png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7f/Orders_of_magnitude_%28english_annotations%29.png/440px-Orders_of_magnitude_%28english_annotations%29.png" decoding="async" width="440" height="1733" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/7/7f/Orders_of_magnitude_%28english_annotations%29.png 1.5x" data-file-width="640" data-file-height="2520" /></a><figcaption>Objects of sizes in different order of magnitude (at inconsistent intervals)</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Scales_of_size.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Scales_of_size.jpg/400px-Scales_of_size.jpg" decoding="async" width="400" height="292" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Scales_of_size.jpg/600px-Scales_of_size.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Scales_of_size.jpg/800px-Scales_of_size.jpg 2x" data-file-width="922" data-file-height="674" /></a><figcaption>Graphical overview of sizes</figcaption></figure> The following are examples of <a href="/wiki/Order_of_magnitude" title="Order of magnitude">orders of magnitude</a> for different <a href="/wiki/Length" title="Length">lengths</a>. <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Overview">Overview</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=1" title="Edit section: Overview">edit</a>]</div> <table class="wikitable floatleft"> <tbody><tr> <th rowspan="2">Scale</th> <th colspan="2">Range (<a href="/wiki/Metre" title="Metre">m</a>)</th> <th rowspan="2">Unit</th> <th rowspan="2">Example items </th></tr> <tr> <th>≥</th> <th>< </th></tr> <tr> <td rowspan="3"><a href="#Subatomic_scale">Subatomic</a> </td> <td>– </td> <td>0 </td> <td>– </td> <td><a href="/wiki/Gravitational_singularity" title="Gravitational singularity">Gravitational singularity</a> </td></tr> <tr> <td>10−36</td> <td>10−33</td> <td><a href="/wiki/Planck_length" class="mw-redirect" title="Planck length"><var>ℓ</var>P</a></td> <td>Fixed value (not a range). <a href="/wiki/Quantum_foam" title="Quantum foam">Quantum foam</a>, <a href="/wiki/String_(physics)" title="String (physics)">string</a> </td></tr> <tr> <td>10−18</td> <td>10−15</td> <td><a href="/wiki/Attometre" class="mw-redirect" title="Attometre">am</a></td> <td><a href="/wiki/Proton" title="Proton">Proton</a>, <a href="/wiki/Neutron" title="Neutron">neutron</a>, <a href="/wiki/Pion" title="Pion">pion</a> </td></tr> <tr> <td rowspan="3"><a href="#Atomic_to_cellular_scale">Atomic to cellular</a></td> <td><a href="#1E-15">10−15</a></td> <td>10−12</td> <td><a href="/wiki/Femtometre" title="Femtometre">fm</a></td> <td><a href="/wiki/Atomic_nucleus" title="Atomic nucleus">Atomic nucleus</a> </td></tr> <tr> <td><a href="#1E-12">10−12</a></td> <td>10−9</td> <td><a href="/wiki/Picometre" title="Picometre">pm</a></td> <td><a href="/wiki/Wavelength" title="Wavelength">Wavelength</a> of <a href="/wiki/Gamma_ray" title="Gamma ray">gamma rays</a> and <a href="/wiki/X-ray" title="X-ray">X-rays</a>, <a href="/wiki/Hydrogen_atom" title="Hydrogen atom">hydrogen atom</a> </td></tr> <tr> <td><a href="#1E-9">10−9</a></td> <td>10−6</td> <td><a href="/wiki/Nanometre" title="Nanometre">nm</a></td> <td><a href="/wiki/DNA" title="DNA">DNA</a> <a href="/wiki/Helix" title="Helix">helix</a>, <a href="/wiki/Virus" title="Virus">virus</a>, wavelength of <a href="/wiki/Optical_spectrum" class="mw-redirect" title="Optical spectrum">optical spectrum</a>, transistors used in CPUs </td></tr> <tr> <td rowspan="2"><a href="#Cellular_to_human_scale">Cellular to human</a></td> <td><a href="#1E-6">10−6</a></td> <td>10−3</td> <td><a href="/wiki/Micrometre" title="Micrometre">μm</a></td> <td><a href="/wiki/Bacterium" class="mw-redirect" title="Bacterium">Bacterium</a>, <a href="/wiki/Fog" title="Fog">fog</a> water droplet, human <a href="/wiki/Hair" title="Hair">hair</a>'s diameter<a href="#cite_note-Note_Physics_Factbook-1">[note 1]</a> </td></tr> <tr> <td><a href="#1E-3">10−3</a></td> <td>1</td> <td><a href="/wiki/Millimetre" title="Millimetre">mm</a></td> <td><a href="/wiki/Mosquito" title="Mosquito">Mosquito</a>, <a href="/wiki/Golf_ball" title="Golf ball">golf ball</a>, <a href="/wiki/Domestic_cat" class="mw-redirect" title="Domestic cat">domestic cat</a>, <a href="/wiki/Violin" title="Violin">violin</a>, <a href="/wiki/Football_(association_football)" class="mw-redirect" title="Football (association football)">football</a> </td></tr> <tr> <td rowspan="2"><a href="#Human_to_astronomical_scale">Human to astronomical</a></td> <td>1</td> <td>103</td> <td><a href="/wiki/Metre" title="Metre">m</a></td> <td><a href="/wiki/Piano" title="Piano">Piano</a>, <a href="/wiki/Human" title="Human">human</a>, <a href="/wiki/Automobile" class="mw-redirect" title="Automobile">automobile</a>, <a href="/wiki/Sperm_whale" title="Sperm whale">sperm whale</a>, <a href="/wiki/Association_football#Pitch" title="Association football">football field</a>, <a href="/wiki/Eiffel_Tower" title="Eiffel Tower">Eiffel Tower</a> </td></tr> <tr> <td><a href="#1E3">103</a></td> <td>106</td> <td><a href="/wiki/Kilometre" title="Kilometre">km</a></td> <td><a href="/wiki/Mount_Everest" title="Mount Everest">Mount Everest</a>, length of <a href="/wiki/Panama_Canal" title="Panama Canal">Panama Canal</a> and <a href="/wiki/Trans-Siberian_Railway" title="Trans-Siberian Railway">Trans-Siberian Railway</a>, larger <a href="/wiki/Asteroid" title="Asteroid">asteroid</a> </td></tr> <tr> <td rowspan="7"><a href="#Astronomical_scale">Astronomical</a></td> <td><a href="#1E6">106</a></td> <td>109</td> <td><a href="#1_megametre">Mm</a></td> <td>The <a href="/wiki/Moon" title="Moon">Moon</a>, Earth, one <a href="/wiki/Light-second" title="Light-second">light-second</a> </td></tr> <tr> <td><a href="#1E9">109</a></td> <td>1012</td> <td><a href="#1_gigametre">Gm</a></td> <td><a href="/wiki/Sun" title="Sun">Sun</a>, one <a href="/wiki/Light-minute" class="mw-redirect" title="Light-minute">light-minute</a>, <a href="/wiki/Earth%27s_orbit" title="Earth's orbit">Earth's orbit</a> </td></tr> <tr> <td><a href="#1E12">1012</a></td> <td>1015</td> <td><a href="#1_terametre">Tm</a></td> <td>Orbits of <a href="/wiki/Outer_planets" class="mw-redirect" title="Outer planets">outer planets</a>, <a href="/wiki/Solar_System" title="Solar System">Solar System</a> </td></tr> <tr> <td><a href="#1E15">1015</a></td> <td>1018</td> <td><a href="#1_petametre">Pm</a></td> <td>A <a href="/wiki/Light-year" title="Light-year">light-year</a>, the distance to <a href="/wiki/Proxima_Centauri" title="Proxima Centauri">Proxima Centauri</a> </td></tr> <tr> <td><a href="#1E18">1018</a></td> <td>1021</td> <td><a href="#1_exametre">Em</a></td> <td><a href="/wiki/Spiral_arm" title="Spiral arm">Galactic arm</a> </td></tr> <tr> <td><a href="#1E21">1021</a></td> <td>1024</td> <td><a href="#1_zettametre">Zm</a></td> <td><a href="/wiki/Milky_Way" title="Milky Way">Milky Way</a>, distance to <a href="/wiki/Andromeda_Galaxy" title="Andromeda Galaxy">Andromeda Galaxy</a> </td></tr> <tr> <td><a href="#1E24">1024</a></td> <td>1027</td> <td><a href="#1_yottametre">Ym</a></td> <td><a href="/wiki/Huge-LQG" title="Huge-LQG">Huge-LQG</a>, <a href="/wiki/Hercules%E2%80%93Corona_Borealis_Great_Wall" title="Hercules–Corona Borealis Great Wall">Hercules–Corona Borealis Great Wall</a>, <a href="/wiki/Observable_universe" title="Observable universe">Observable universe</a> </td></tr></tbody></table> <div style="clear:both;" class=""></div> <div class="mw-heading mw-heading2"><h2 id="Detailed_list">Detailed list</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=2" title="Edit section: Detailed list">edit</a>]</div> To help compare different orders of magnitude, the following list describes various lengths between <math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 1.6\times 10^{-35}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <mn>1.6</mn> <mo>×</mo> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <mo>−</mo> <mn>35</mn> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 1.6\times 10^{-35}}</annotation> </semantics> </math><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/d333f0a7fd02452b99a5a4ce79df2c6a1c5f07cb" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:11.292ex; height:2.676ex;" alt="{\displaystyle 1.6\times 10^{-35}}"> metres and <math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 10^{10^{10^{122}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>122</mn> </mrow> </msup> </mrow> </msup> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 10^{10^{10^{122}}}}</annotation> </semantics> </math><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/f0da4c6feb5287d705dc0f51c21317c5ddbce34b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:7.835ex; height:3.509ex;" alt="{\displaystyle 10^{10^{10^{122}}}}">metres. <div class="mw-heading mw-heading3"><h3 id="Subatomic_scale">Subatomic scale</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=3" title="Edit section: Subatomic scale">edit</a>]</div> <table class="wikitable"> <tbody><tr> <th>Factor (<a href="/wiki/Metre" title="Metre">m</a>) </th> <th>Multiple </th> <th>Value </th> <th>Item </th></tr> <tr> <td>0 </td> <td>0 </td> <td>0 </td> <td><a href="/wiki/Gravitational_singularity" title="Gravitational singularity">Singularity</a> </td></tr> <tr> <td>10−35 </td> <td>1 <a href="/wiki/Planck_length" class="mw-redirect" title="Planck length">Planck length</a> </td> <td>0.0000162 qm  </td> <td><a href="/wiki/Planck_length" class="mw-redirect" title="Planck length">Planck length</a>; typical scale of hypothetical <a href="/wiki/Loop_quantum_gravity" title="Loop quantum gravity">loop quantum gravity</a> or size of a hypothetical <a href="/wiki/String_(physics)" title="String (physics)">string</a> and of <a href="/wiki/Brane" title="Brane">branes</a>; according to <a href="/wiki/String_theory" title="String theory">string theory</a>, lengths smaller than this do not make any <a href="/wiki/Physics" title="Physics">physical</a> sense.<a href="#cite_note-Burgess_and_Quevedo-2">[1]</a> <a href="/wiki/Quantum_foam" title="Quantum foam">Quantum foam</a> is thought to exist at this scale. </td></tr> <tr> <td>10−24 </td> <td><a href="#Less_than_1_zeptometre">1 yoctometre</a> (<a href="/wiki/Yoctometre" class="mw-redirect" title="Yoctometre">ym</a>) </td> <td>142 ym </td> <td>Effective <a href="/wiki/Cross_section_(physics)" title="Cross section (physics)">cross section</a> radius of 1 <a href="/wiki/MeV" class="mw-redirect" title="MeV">MeV</a> <a href="/wiki/Neutrino" title="Neutrino">neutrinos</a><a href="#cite_note-3">[2]</a> </td></tr> <tr> <td rowspan="3">10−21 </td> <td rowspan="3"><a href="#1_zeptometre">1 zeptometre</a> (<a href="/wiki/Zeptometre" class="mw-redirect" title="Zeptometre">zm</a>) </td> <td> </td> <td><a href="/wiki/Preon" title="Preon">Preons</a>, hypothetical particles proposed as subcomponents of quarks and leptons; the upper bound for the width of a <a href="/wiki/Cosmic_string" title="Cosmic string">cosmic string</a> in string theory </td></tr> <tr> <td>7 zm </td> <td>Effective cross section radius of high-energy <a href="/wiki/Neutrino" title="Neutrino">neutrinos</a><a href="#cite_note-NaveN3-4">[3]</a> </td></tr> <tr> <td>310 zm </td> <td><a href="/wiki/De_Broglie_wavelength" class="mw-redirect" title="De Broglie wavelength">De Broglie wavelength</a> of <a href="/wiki/Protons" class="mw-redirect" title="Protons">protons</a> at the <a href="/wiki/Large_Hadron_Collider" title="Large Hadron Collider">Large Hadron Collider</a> (4 TeV as of 2012<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">[update]</a>) </td></tr> <tr> <td rowspan="3">10−18 </td> <td rowspan="3"><a href="#1_attometre">1 attometre</a> (<a href="/wiki/Attometre" class="mw-redirect" title="Attometre">am</a>) </td> <td rowspan="3"> </td> <td>Upper limit for the size of <a href="/wiki/Quark" title="Quark">quarks</a> and <a href="/wiki/Electron" title="Electron">electrons</a> </td></tr> <tr> <td>Sensitivity of the <a href="/wiki/LIGO" title="LIGO">LIGO</a> detector for <a href="/wiki/Gravitational_wave" title="Gravitational wave">gravitational waves</a><a href="#cite_note-5">[4]</a> </td></tr> <tr> <td>Upper bound of the typical size range for "fundamental <a href="/wiki/String_(physics)" title="String (physics)">strings</a>"<a href="#cite_note-Burgess_and_Quevedo-2">[1]</a> </td></tr> <tr> <td>10−17 </td> <td><a href="#10_attometres">10 am</a> </td> <td> </td> <td>Range of the <a href="/wiki/Weak_force" class="mw-redirect" title="Weak force">weak force</a> </td></tr> <tr> <td>10−16 </td> <td><a href="#100_attometres">100 am</a> </td> <td>850 am </td> <td>Approximate proton radius<a href="#cite_note-6">[5]</a> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Atomic_to_cellular_scale">Atomic to cellular scale</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=4" title="Edit section: Atomic to cellular scale">edit</a>]</div> <table class="wikitable"> <tbody><tr> <th>Factor (<a href="/wiki/Metre" title="Metre">m</a>) </th> <th>Multiple </th> <th>Value </th> <th>Item </th></tr> <tr> <td rowspan="5">10−15 </td> <td rowspan="5"><a href="#1_femtometre">1 femtometre</a> (<a href="/wiki/Femtometre" title="Femtometre">fm</a>, fermi) </td> <td>1 fm </td> <td>Approximate limit of the <a href="/wiki/Gluon" title="Gluon">gluon</a>-mediated <a href="/wiki/Strong_interaction" title="Strong interaction">color force</a> between <a href="/wiki/Quark" title="Quark">quarks</a><a href="#cite_note-profmattstrassler-7">[6]</a><a href="#cite_note-Kolena_at_Duke-8">[7]</a> </td></tr> <tr> <td>1.5 fm </td> <td>Effective cross section radius of an 11 MeV <a href="/wiki/Proton" title="Proton">proton</a><a href="#cite_note-Nav-9">[8]</a> </td></tr> <tr> <td>2.81794 fm </td> <td><a href="/wiki/Classical_electron_radius" title="Classical electron radius">Classical electron radius</a><a href="#cite_note-10">[9]</a> </td></tr> <tr> <td>3 fm </td> <td>Approximate limit of the <a href="/wiki/Meson" title="Meson">meson</a>-mediated <a href="/wiki/Strong_interaction" title="Strong interaction">nuclear binding force</a><a href="#cite_note-profmattstrassler-7">[6]</a><a href="#cite_note-Kolena_at_Duke-8">[7]</a> </td></tr> <tr> <td>750 to 822.25 fm </td> <td>Longest <a href="/wiki/Wavelength" title="Wavelength">wavelength</a> of <a href="/wiki/Gamma_ray" title="Gamma ray">gamma rays</a> </td></tr> <tr> <td rowspan="4">10−12 </td> <td rowspan="4"><a href="#1_picometre">1 picometre</a> (<a href="/wiki/Picometre" title="Picometre">pm</a>) </td> <td>1.75 to 15 fm </td> <td>Diameter range of the <a href="/wiki/Atomic_nucleus" title="Atomic nucleus">atomic nucleus</a><a href="#cite_note-Burgess_and_Quevedo-2">[1]</a><a href="#cite_note-11">[10]</a> </td></tr> <tr> <td>1 pm </td> <td>Distance between <a href="/wiki/Atomic_nuclei" class="mw-redirect" title="Atomic nuclei">atomic nuclei</a> in a <a href="/wiki/White_dwarf" title="White dwarf">white dwarf</a> </td></tr> <tr> <td>2.4 pm </td> <td><a href="/wiki/Compton_wavelength" title="Compton wavelength">Compton wavelength</a> of <a href="/wiki/Electron" title="Electron">electron</a> </td></tr> <tr> <td>5 pm </td> <td>Wavelength of shortest <a href="/wiki/X-ray" title="X-ray">X-rays</a> </td></tr> <tr> <td rowspan="2">10−11 </td> <td rowspan="2"><a href="#10_picometres">10 pm</a> </td> <td>28 pm </td> <td>Radius of <a href="/wiki/Helium" title="Helium">helium</a> atom </td></tr> <tr> <td>53 pm </td> <td><a href="/wiki/Bohr_radius" title="Bohr radius">Bohr radius</a> (radius of a <a href="/wiki/Hydrogen_atom" title="Hydrogen atom">hydrogen atom</a>) </td></tr> <tr> <td rowspan="4">10−10 </td> <td rowspan="4"><a href="#100_picometres">100 pm</a> </td> <td>100 pm </td> <td>1 <a href="/wiki/%C3%85ngstr%C3%B6m" class="mw-redirect" title="Ångström">ångström</a> (also <a href="/wiki/Covalent_radius" title="Covalent radius">covalent radius</a> of <a href="/wiki/Sulfur" title="Sulfur">sulfur</a> atom<a href="#cite_note-12">[11]</a>) </td></tr> <tr> <td>154 pm </td> <td>Length of a typical <a href="/wiki/Covalent_bond" title="Covalent bond">covalent bond</a> (<a href="/wiki/Carbon" title="Carbon">C</a>–C) </td></tr> <tr> <td>280 pm </td> <td>Average size of the <a href="/wiki/Water" title="Water">water</a> molecule (actual lengths may vary) </td></tr> <tr> <td>500 pm </td> <td>Width of <a href="/wiki/Protein" title="Protein">protein</a> <a href="/wiki/Alpha_helix" title="Alpha helix">α helix</a> </td></tr> <tr> <td rowspan="5">10−9 </td> <td rowspan="5"><a href="#1_nanometre">1 nanometre</a> (<a href="/wiki/Nanometre" title="Nanometre">nm</a>) </td> <td>1 nm </td> <td>Diameter of a <a href="/wiki/Carbon_nanotube" title="Carbon nanotube">carbon nanotube</a><a href="#cite_note-13">[12]</a> Diameter of smallest transistor gate (as of 2016)<a href="#cite_note-14">[13]</a> </td></tr> <tr> <td>2 nm </td> <td>Diameter of the <a href="/wiki/DNA" title="DNA">DNA</a> helix<a href="#cite_note-15">[14]</a> </td></tr> <tr> <td>2.5 nm </td> <td>Smallest <a href="/wiki/Microprocessor" title="Microprocessor">microprocessor</a> <a href="/wiki/Transistor" title="Transistor">transistor</a> <a href="/wiki/Gate_(transistor)" class="mw-redirect" title="Gate (transistor)">gate</a> oxide thickness (as of January 2007<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">[update]</a>)[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>] </td></tr> <tr> <td>3.4 nm </td> <td>Length of a <a href="/wiki/DNA" title="DNA">DNA</a> <a href="/wiki/Turn_(biochemistry)" title="Turn (biochemistry)">turn</a> (10 <a href="/wiki/Base_pair" title="Base pair">bp</a>)<a href="#cite_note-16">[15]</a> </td></tr> <tr> <td>6–10 nm </td> <td>Thickness of <a href="/wiki/Cell_membrane" title="Cell membrane">cell membrane</a> </td></tr> <tr> <td rowspan="4">10−8 </td> <td rowspan="4"><a href="#10_nanometres">10 nm</a> </td> <td>10 nm </td> <td>Upper range of thickness of <a href="/wiki/Cell_wall" title="Cell wall">cell wall</a> in <a href="/wiki/Gram_staining" class="mw-redirect" title="Gram staining">Gram</a>-negative <a href="/wiki/Bacteria" title="Bacteria">bacteria</a><a href="#cite_note-17">[16]</a> </td></tr> <tr> <td>10 nm </td> <td>As of 2016<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">[update]</a>, the <a href="/wiki/10_nanometre" class="mw-redirect" title="10 nanometre">10 nanometre</a> was the smallest <a href="/wiki/Semiconductor_device_fabrication" title="Semiconductor device fabrication">semiconductor device fabrication</a> <a href="/wiki/Semiconductor_node" class="mw-redirect" title="Semiconductor node">node</a><a href="#cite_note-18">[17]</a> </td></tr> <tr> <td>40 nm </td> <td>Extreme <a href="/wiki/Ultraviolet" title="Ultraviolet">ultraviolet</a> wavelength </td></tr> <tr> <td>50 nm </td> <td><a href="/wiki/Flying_height" title="Flying height">Flying height</a> of the <a href="/wiki/Disk_read-and-write_head" title="Disk read-and-write head">head</a> of a <a href="/wiki/Hard_disk" class="mw-redirect" title="Hard disk">hard disk</a><a href="#cite_note-19">[18]</a> </td></tr> <tr> <td rowspan="3">10−7 </td> <td rowspan="3"><a href="#100_nanometres">100 nm</a> </td> <td>121.6 nm </td> <td>Wavelength of the <a href="/wiki/Lyman-alpha_line" class="mw-redirect" title="Lyman-alpha line">Lyman-alpha line</a><a href="#cite_note-ber-20">[19]</a> </td></tr> <tr> <td>120 nm </td> <td>Typical diameter of the <a href="/wiki/Human_immunodeficiency_virus" class="mw-redirect" title="Human immunodeficiency virus">human immunodeficiency virus</a> (HIV)<a href="#cite_note-21">[20]</a> </td></tr> <tr> <td>400–700 nm </td> <td>Approximate wavelength range of <a href="/wiki/Visible_light" class="mw-redirect" title="Visible light">visible light</a><a href="#cite_note-hyp-22">[21]</a> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Cellular_to_human_scale">Cellular to human scale</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=5" title="Edit section: Cellular to human scale">edit</a>]</div> <table class="wikitable"> <tbody><tr> <th>Factor (<a href="/wiki/Metre" title="Metre">m</a>) </th> <th>Multiple </th> <th>Value </th> <th>Item </th></tr> <tr> <td rowspan="3">10−6 </td> <td rowspan="3"><a href="#1_micrometre">1 micrometre</a> (<a href="/wiki/Micrometre" title="Micrometre">μm</a>) (also called 1 micron) </td> <td>1–4 μm </td> <td>Typical length of a bacterium<a href="#cite_note-23">[22]</a> </td></tr> <tr> <td>4 μm </td> <td>Typical diameter of <a href="/wiki/Spider_silk" title="Spider silk">spider silk</a><a href="#cite_note-24">[23]</a> </td></tr> <tr> <td>7 μm </td> <td>Typical size of a <a href="/wiki/Red_blood_cell" title="Red blood cell">red blood cell</a><a href="#cite_note-25">[24]</a> </td></tr> <tr> <td rowspan="4">10−5 </td> <td rowspan="4"><a href="#10_micrometres">10 μm</a> </td> <td>10 μm </td> <td>Typical size of a fog, mist, or cloud water droplet </td></tr> <tr> <td>10 μm </td> <td>Width of <a href="/wiki/Transistor" title="Transistor">transistors</a> in the <a href="/wiki/Intel_4004" title="Intel 4004">Intel 4004</a>, the world's first commercial <a href="/wiki/Microprocessor" title="Microprocessor">microprocessor</a> </td></tr> <tr> <td>12 μm </td> <td>Width of <a href="/wiki/Acrylic_fiber" title="Acrylic fiber">acrylic fiber</a> </td></tr> <tr> <td>17-181 μm </td> <td>Width range of human hair<a href="#cite_note-Physics_Factbook-26">[25]</a> </td></tr> <tr> <td rowspan="3">10−4 </td> <td rowspan="3"><a href="#100_micrometres">100 μm</a> </td> <td>340 μm </td> <td>Size of a <a href="/wiki/Pixel" title="Pixel">pixel</a> on a 17-inch monitor with a resolution of 1024×768 </td></tr> <tr> <td>560 μm </td> <td>Thickness of the central area of a human <a href="/wiki/Cornea" title="Cornea">cornea</a><a href="#cite_note-ReferenceA-27">[26]</a> </td></tr> <tr> <td>750 μm </td> <td>Maximum diameter of <a href="/wiki/Thiomargarita_namibiensis" title="Thiomargarita namibiensis">Thiomargarita namibiensis</a>, the second largest bacterium ever discovered </td></tr> <tr> <td rowspan="3">10−3 </td> <td rowspan="3"><a href="#1_millimetre">1 millimetre</a> (<a href="/wiki/Millimetre" title="Millimetre">mm</a>) </td> <td>~5 mm </td> <td>Length of an average <a href="/wiki/Flea" title="Flea">flea</a> is 1–10 mm (usually <5 mm)<a href="#cite_note-BugGuide-28">[27]</a> </td></tr> <tr> <td>2.54 mm </td> <td>One-tenth inch; distance between pins in <a href="/wiki/Dual_in-line_package" title="Dual in-line package">DIP</a> (dual-inline-package) electronic components </td></tr> <tr> <td>5.70 mm </td> <td>Diameter of the projectile in <a href="/wiki/5.56%C3%9745mm_NATO" title="5.56×45mm NATO">5.56×45mm NATO</a> ammunition </td></tr> <tr> <td rowspan="3">10−2 </td> <td rowspan="3"><a href="#1_centimetre">1 centimetre</a> (<a href="/wiki/Centimetre" title="Centimetre">cm</a>) </td> <td>20 mm </td> <td>Approximate width of an adult human <a href="/wiki/Finger" title="Finger">finger</a> </td></tr> <tr> <td>54 mm × 86 mm </td> <td>Dimensions of a <a href="/wiki/Credit_card" title="Credit card">credit card</a>, according to the <a href="/wiki/ISO/IEC_7810_ID-1" class="mw-redirect" title="ISO/IEC 7810 ID-1">ISO/IEC 7810 ID-1</a> standard </td></tr> <tr> <td>73–75 mm </td> <td>Diameter of a <a href="/wiki/Baseball_(ball)" title="Baseball (ball)">baseball</a>, according to <a href="/wiki/Major_League_Baseball" title="Major League Baseball">Major League Baseball</a> guidelines<a href="#cite_note-Official_Rules-29">[28]</a> </td></tr> <tr> <td rowspan="3">10−1 </td> <td rowspan="3"><a href="#1_decimetre">1 decimetre</a> (<a href="/wiki/Decimetre" title="Decimetre">dm</a>) </td> <td>120 mm </td> <td>Diameter of a <a href="/wiki/Compact_disc" title="Compact disc">compact disc</a> </td></tr> <tr> <td>660 mm </td> <td>Length of the longest <a href="/wiki/Pine" title="Pine">pine</a> cones, produced by the <a href="/wiki/Sugar_pine" class="mw-redirect" title="Sugar pine">sugar pine</a><a href="#cite_note-30">[29]</a> </td></tr> <tr> <td>900 mm </td> <td>Average length of a <a href="/wiki/Rapier" title="Rapier">rapier</a>, a <a href="/wiki/Fencing" title="Fencing">fencing</a> sword<a href="#cite_note-2-Clicks_Swords-31">[30]</a> </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Human_to_astronomical_scale">Human to astronomical scale</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=6" title="Edit section: Human to astronomical scale">edit</a>]</div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Size_planets_comparison.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Size_planets_comparison.jpg/220px-Size_planets_comparison.jpg" decoding="async" width="220" height="124" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Size_planets_comparison.jpg/330px-Size_planets_comparison.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3c/Size_planets_comparison.jpg/440px-Size_planets_comparison.jpg 2x" data-file-width="2100" data-file-height="1181" /></a><figcaption>Planets of the Solar System to scale</figcaption></figure> <table class="wikitable"> <tbody><tr> <th>Factor (<a href="/wiki/Metre" title="Metre">m</a>) </th> <th>Multiple </th> <th>Value </th> <th>Item </th></tr> <tr> <td rowspan="3">1 (100) </td> <td rowspan="3"><a href="#1_metre">1 metre</a> (<a href="/wiki/Metre" title="Metre">m</a>) </td> <td>1 m (exactly) </td> <td>Since 2019, defined as the length of the path travelled by <a href="/wiki/Light#Speed_of_light" title="Light">light in a vacuum</a> during a time interval of 1/299,792,458 of a <a href="/wiki/Second" title="Second">second</a>, where the second is defined by a hyperfine transition frequency of <a href="/wiki/Caesium" title="Caesium">caesium</a>. </td></tr> <tr> <td>2.72 m </td> <td>Height of <a href="/wiki/Robert_Wadlow" title="Robert Wadlow">Robert Wadlow</a>, tallest-known human.<a href="#cite_note-Guinness-32">[31]</a> </td></tr> <tr> <td>8.38 m </td> <td>Length of a London bus (<a href="/wiki/AEC_Routemaster" title="AEC Routemaster">AEC Routemaster</a>) </td></tr> <tr> <td rowspan="3">101 </td> <td rowspan="3"><a href="#1_decametre">1 decametre</a> (<a href="/wiki/Decametre" title="Decametre">dam</a>) </td> <td>33 m </td> <td>Length of the longest-known <a href="/wiki/Blue_whale" title="Blue whale">blue whale</a><a href="#cite_note-33">[32]</a> </td></tr> <tr> <td>52 m </td> <td>Height of the <a href="/wiki/Niagara_Falls" title="Niagara Falls">Niagara Falls</a><a href="#cite_note-Niagara_Parks_Commission-34">[33]</a> </td></tr> <tr> <td>93.47 m </td> <td>Height of the <a href="/wiki/Statue_of_Liberty" title="Statue of Liberty">Statue of Liberty</a> </td></tr> <tr> <td rowspan="4">102 </td> <td rowspan="4"><a href="#1_hectometre">1 hectometre</a> (<a href="/wiki/Hectometre" title="Hectometre">hm</a>) </td> <td>105 m </td> <td>Length of a typical <a href="/wiki/Association_football" title="Association football">football</a> field </td></tr> <tr> <td>137 m (147 m) </td> <td>Height (present and original) of the <a href="/wiki/Great_Pyramid_of_Giza" title="Great Pyramid of Giza">Great Pyramid of Giza</a> </td></tr> <tr> <td>300 m </td> <td>Height of the <a href="/wiki/Eiffel_Tower" title="Eiffel Tower">Eiffel Tower</a>, one of the famous monuments of Paris </td></tr> <tr> <td>979 m </td> <td>Height of the <a href="/wiki/Salto_Angel" class="mw-redirect" title="Salto Angel">Salto Angel</a>, the world's highest free-falling waterfall (<a href="/wiki/Venezuela" title="Venezuela">Venezuela</a>) </td></tr> <tr> <td rowspan="3">103 </td> <td rowspan="3"><a href="#1_kilometre">1 kilometre</a> (<a href="/wiki/Kilometre" title="Kilometre">km</a>) </td> <td>2.3 km </td> <td>Length of the <a href="/wiki/Three_Gorges_Dam" title="Three Gorges Dam">Three Gorges Dam</a>, the largest <a href="/wiki/Dam" title="Dam">dam</a> in the world<a href="#cite_note-Three_Gorges_Dam-35">[34]</a><a href="#cite_note-36">[35]</a> </td></tr> <tr> <td>3.1 km </td> <td>Narrowest width of the <a href="/wiki/Strait_of_Messina" title="Strait of Messina">Strait of Messina</a>, separating <a href="/wiki/Italy" title="Italy">Italy</a> and <a href="/wiki/Sicily" title="Sicily">Sicily</a> </td></tr> <tr> <td>8.848 km </td> <td>Height of <a href="/wiki/Mount_Everest" title="Mount Everest">Mount Everest</a>, the highest mountain on Earth </td></tr> <tr> <td rowspan="3">104 </td> <td rowspan="3"><a href="#10_kilometres">10 km</a> </td> <td>10.9 km </td> <td>Depth of the <a href="/wiki/Challenger_Deep" title="Challenger Deep">Challenger Deep</a> in the <a href="/wiki/Mariana_Trench" title="Mariana Trench">Mariana Trench</a>, the deepest-known point on Earth's surface </td></tr> <tr> <td>27 km </td> <td>Circumference of the <a href="/wiki/Large_Hadron_Collider" title="Large Hadron Collider">Large Hadron Collider</a>, as of May 2010<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">[update]</a> the largest and highest energy <a href="/wiki/Particle_accelerator" title="Particle accelerator">particle accelerator</a> </td></tr> <tr> <td>42.195 km </td> <td>Length of a <a href="/wiki/Marathon" title="Marathon">marathon</a> </td></tr> <tr> <td rowspan="4">105 </td> <td rowspan="4"><a href="#100_kilometres">100 km</a> </td> <td>100 km </td> <td>The distance the <a href="/wiki/IAU" class="mw-redirect" title="IAU">IAU</a> considers to be the limit to <a href="/wiki/Space" title="Space">space</a>, called the <a href="/wiki/Karman_line" class="mw-redirect" title="Karman line">Karman line</a> </td></tr> <tr> <td>163 km </td> <td>Length of the <a href="/wiki/Suez_Canal" title="Suez Canal">Suez Canal</a>, connecting the <a href="/wiki/Mediterranean_Sea" title="Mediterranean Sea">Mediterranean Sea</a> to the <a href="/wiki/Red_Sea" title="Red Sea">Red Sea</a> </td></tr> <tr> <td>491 km </td> <td>Length of the <a href="/wiki/Pyrenees" title="Pyrenees">Pyrenees</a>, the <a href="/wiki/Mountain_range" title="Mountain range">mountain range</a> separating <a href="/wiki/Spain" title="Spain">Spain</a> and <a href="/wiki/France" title="France">France</a> </td></tr> <tr> <td>974.6 km </td> <td>Greatest diameter of the dwarf planet <a href="/wiki/Ceres_(dwarf_planet)" title="Ceres (dwarf planet)">Ceres</a>.<a href="#cite_note-ReferenceB-37">[36]</a> </td></tr> <tr> <td rowspan="9">106 </td> <td rowspan="9"><a href="#1_megametre">1 megametre</a> (<a href="/wiki/Megametre" class="mw-redirect" title="Megametre">Mm</a>) </td> <td>2.38 Mm </td> <td>Diameter of dwarf planet <a href="/wiki/Pluto" title="Pluto">Pluto</a>, formerly the smallest <a href="/wiki/Planet" title="Planet">planet</a> category<a href="#cite_note-Asteroid-planet?-38">[note 2]</a> in the Solar System </td></tr> <tr> <td>3.48 Mm </td> <td>Diameter of the <a href="/wiki/Moon" title="Moon">Moon</a> </td></tr> <tr> <td>5.2 Mm </td> <td>Typical distance covered by the winner of the <a href="/wiki/24_Hours_of_Le_Mans" title="24 Hours of Le Mans">24 Hours of Le Mans</a> automobile endurance race </td></tr> <tr> <td>6.259 Mm </td> <td>Length of the <a href="/wiki/Great_Wall_of_China" title="Great Wall of China">Great Wall of China</a> </td></tr> <tr> <td>6.371 Mm </td> <td>Average <a href="/wiki/Earth_radius" title="Earth radius">radius of Earth</a> </td></tr> <tr> <td>6.378 Mm </td> <td>Equatorial radius of Earth </td></tr> <tr> <td>6.6 Mm </td> <td>Approximate length of the two longest rivers, the <a href="/wiki/Nile" title="Nile">Nile</a> and the <a href="/wiki/Amazon_River" title="Amazon River">Amazon</a> </td></tr> <tr> <td>7.821 Mm </td> <td>Length of the <a href="/wiki/Trans-Canada_Highway" title="Trans-Canada Highway">Trans-Canada Highway</a> </td></tr> <tr> <td>9.288 Mm </td> <td>Length of the <a href="/wiki/Trans-Siberian_Railway" title="Trans-Siberian Railway">Trans-Siberian Railway</a>, longest in the world </td></tr></tbody></table> <div class="mw-heading mw-heading3"><h3 id="Astronomical_scale">Astronomical scale</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=7" title="Edit section: Astronomical scale">edit</a>]</div> <table class="wikitable"> <tbody><tr> <th>Factor (<a href="/wiki/Metre" title="Metre">m</a>) </th> <th>Multiple </th> <th>Value </th> <th>Item </th></tr> <tr> <td rowspan="3">107 </td> <td rowspan="3"><a href="#10_megametres">10 Mm</a> </td> <td>12.756 Mm </td> <td>Equatorial diameter of Earth </td></tr> <tr> <td>20.004 Mm </td> <td>Length of a <a href="/wiki/Meridian_(geography)" title="Meridian (geography)">meridian</a> on Earth (distance between Earth's poles along the surface)<a href="#cite_note-39">[37]</a> </td></tr> <tr> <td>40.075 Mm </td> <td>Length of Earth's <a href="/wiki/Equator" title="Equator">equator</a> </td></tr> <tr> <td rowspan="3">108 </td> <td rowspan="3"><a href="#100_megametres">100 Mm</a> </td> <td>142.984 Mm </td> <td>Diameter of <a href="/wiki/Jupiter" title="Jupiter">Jupiter</a> </td></tr> <tr> <td>299.792 Mm </td> <td>Distance traveled by light in vacuum in one second (a <a href="/wiki/Light-second" title="Light-second">light-second</a>, exactly 299,792,458 m by definition of the <a href="/wiki/Speed_of_light" title="Speed of light">speed of light</a>) </td></tr> <tr> <td>384.4 Mm </td> <td><a href="/wiki/Moon" title="Moon">Moon</a>'s orbital distance from Earth </td></tr> <tr> <td rowspan="2">109 </td> <td rowspan="2"><a href="#1_gigametre">1 gigametre</a> (<a href="/wiki/Gigametre" class="mw-redirect" title="Gigametre">Gm</a>) </td> <td>1.39 Gm </td> <td>Diameter of the <a href="/wiki/Sun" title="Sun">Sun</a> </td></tr> <tr> <td>5.15 Gm </td> <td>Greatest mileage ever recorded by a car (3.2 million miles by a 1966 <a href="/wiki/Volvo_P1800" title="Volvo P1800">Volvo P-1800S</a>)<a href="#cite_note-40">[38]</a> </td></tr> <tr> <td>1010 </td> <td><a href="#10_gigametres">10 Gm</a> </td> <td>18 Gm </td> <td>Approximately one <a href="/wiki/Light-minute" class="mw-redirect" title="Light-minute">light-minute</a> </td></tr> <tr> <td rowspan="1">1011 </td> <td rowspan="1"><a href="#100_gigametres">100 Gm</a> </td> <td>150 Gm </td> <td>1 <a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical unit</a> (au); mean distance between Earth and Sun </td></tr> <tr> <td rowspan="5">1012 </td> <td rowspan="5"><a href="#1_terametre">1 terametre</a> (Tm) </td> <td>1.3 Tm </td> <td>Optical diameter of <a href="/wiki/Betelgeuse" title="Betelgeuse">Betelgeuse</a> </td></tr> <tr> <td>1.4 Tm </td> <td>Orbital distance of <a href="/wiki/Saturn" title="Saturn">Saturn</a> from Sun </td></tr> <tr> <td>2 Tm </td> <td>Estimated optical diameter of <a href="/wiki/VY_Canis_Majoris" title="VY Canis Majoris">VY Canis Majoris</a>, one of the <a href="/wiki/List_of_largest_stars" title="List of largest stars">largest-known stars</a> </td></tr> <tr> <td>5.9 Tm </td> <td>Orbital distance of Pluto from the Sun </td></tr> <tr> <td>~ 7.5 Tm </td> <td>Outer boundary of the <a href="/wiki/Kuiper_belt" title="Kuiper belt">Kuiper belt</a> </td></tr> <tr> <td rowspan="4">1013 </td> <td rowspan="4"><a href="#10_terametres">10 Tm</a> </td> <td> </td> <td>Diameter of the <a href="/wiki/Solar_System" title="Solar System">Solar System</a> as a whole<a href="#cite_note-Burgess_and_Quevedo-2">[1]</a> </td></tr> <tr> <td>16.09 Tm </td> <td>Total length of DNA molecules in all cells of an adult human body<a href="#cite_note-41">[39]</a> </td></tr> <tr> <td>21.49 Tm </td> <td>Distance of the <a href="/wiki/Voyager_1" title="Voyager 1">Voyager 1</a> spacecraft from Sun (as of Oct 2018<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">[update]</a>), the farthest man-made object so far<a href="#cite_note-42">[40]</a> </td></tr> <tr> <td>62.03 Tm </td> <td>Estimated radius of the <a href="/wiki/Event_horizon" title="Event horizon">event horizon</a> of the <a href="/wiki/Supermassive_black_hole" title="Supermassive black hole">supermassive black hole</a> in <a href="/wiki/NGC_4889" title="NGC 4889">NGC 4889</a>, the largest-known <a href="/wiki/Black_hole" title="Black hole">black hole</a> to date </td></tr> <tr> <td>1014 </td> <td><a href="#100_terametres">100 Tm</a> </td> <td>180 Tm </td> <td>Size of the <a href="/wiki/Debris_disk" title="Debris disk">debris disk</a> around the star <a href="/wiki/51_Pegasi" title="51 Pegasi">51 Pegasi</a><a href="#cite_note-43">[41]</a> </td></tr> <tr> <td rowspan="2">1015 </td> <td rowspan="2"><a href="#1_petametre">1 petametre</a> (Pm) </td> <td>~7.5 Pm </td> <td>Supposed outer boundary of the <a href="/wiki/Oort_cloud" title="Oort cloud">Oort cloud</a> (~ 50,000 au) </td></tr> <tr> <td>9.461 Pm </td> <td>Distance traveled by light in vacuum in one year; at its current speed, Voyager 1 would need 17,500 years to travel this distance </td></tr> <tr> <td rowspan="3">1016 </td> <td rowspan="3"><a href="#10_petametres">10 Pm</a> </td> <td>30.857 Pm </td> <td>1 <a href="/wiki/Parsec" title="Parsec">parsec</a> </td></tr> <tr> <td>39.9 Pm </td> <td>Distance to nearest star (<a href="/wiki/Proxima_Centauri" title="Proxima Centauri">Proxima Centauri</a>) </td></tr> <tr> <td>41.3 Pm </td> <td>As of March 2013, distance to nearest discovered <a href="/wiki/Extrasolar_planet" class="mw-redirect" title="Extrasolar planet">extrasolar planet</a> (<a href="/wiki/Alpha_Centauri_Bc" class="mw-redirect" title="Alpha Centauri Bc">Alpha Centauri Bc</a>) </td></tr> <tr> <td rowspan="2">1017 </td> <td rowspan="2"><a href="#100_petametres">100 Pm</a> </td> <td>193 Pm </td> <td>As of October 2010, distance to nearest discovered extrasolar planet with potential to support life as presently defined by science (<a href="/wiki/Gliese_581_d" class="mw-redirect" title="Gliese 581 d">Gliese 581 d</a>) </td></tr> <tr> <td>615 Pm </td> <td>Approximate radius of humanity's radio bubble, caused by high-power TV broadcasts leaking through the atmosphere into outer space </td></tr> <tr> <td>1018 </td> <td><a href="#1_exametre">1 exametre</a> (Em) </td> <td>1.9 Em </td> <td>Distance to nearby <a href="/wiki/Solar_twin" class="mw-redirect" title="Solar twin">solar twin</a> (<a href="/wiki/HIP_56948" title="HIP 56948">HIP 56948</a>), a star with properties virtually identical to the Sun<a href="#cite_note-44">[42]</a> </td></tr> <tr> <td>1019 </td> <td><a href="#10_exametres">10 Em</a> </td> <td>9.46 Em </td> <td>Average thickness of <a href="/wiki/Milky_Way_Galaxy" class="mw-redirect" title="Milky Way Galaxy">Milky Way Galaxy</a><a href="#cite_note-45">[43]</a> (1,000 to 3,000 ly by <a href="/wiki/Hydrogen_line" title="Hydrogen line">21 cm observations</a><a href="#cite_note-46">[44]</a>) </td></tr> <tr> <td rowspan="1">1020 </td> <td><a href="#100_exametres">100 Em</a> </td> <td>113.5 Em </td> <td>Thickness of <a href="/wiki/Milky_Way_Galaxy" class="mw-redirect" title="Milky Way Galaxy">Milky Way Galaxy</a>'s gaseous disk<a href="#cite_note-47">[45]</a> </td></tr> <tr> <td rowspan="6">1021 </td> <td rowspan="6"><a href="#1_zettametre">1 zettametre</a> (Zm) </td></tr> <tr> <td>1.54 Zm </td> <td>Distance to <a href="/wiki/Supernova_1987a" class="mw-redirect" title="Supernova 1987a">SN 1987A</a>, the most recent naked eye supernova </td></tr> <tr> <td>1.62 Zm </td> <td>Distance to the <a href="/wiki/Large_Magellanic_Cloud" title="Large Magellanic Cloud">Large Magellanic Cloud</a> (a <a href="/wiki/Dwarf_galaxy" title="Dwarf galaxy">dwarf galaxy</a> <a href="/wiki/Orbit" title="Orbit">orbiting</a> the <a href="/wiki/Milky_Way" title="Milky Way">Milky Way</a>) </td></tr> <tr> <td>1.66 Zm </td> <td>Distance to the <a href="/wiki/Small_Magellanic_Cloud" title="Small Magellanic Cloud">Small Magellanic Cloud</a> (another dwarf galaxy orbiting the Milky Way) </td></tr> <tr> <td>1.9 Zm </td> <td>Diameter of galactic disk of <a href="/wiki/Milky_Way_Galaxy" class="mw-redirect" title="Milky Way Galaxy">Milky Way Galaxy</a><a href="#cite_note-48">[46]</a><a href="#cite_note-49">[47]</a><a href="#cite_note-rpi2015-50">[48]</a><a href="#cite_note-51">[49]</a> </td></tr> <tr> <td>6.15 Zm </td> <td>Diameter of the low surface brightness disc halo of the giant spiral galaxy <a href="/wiki/Malin_1" title="Malin 1">Malin 1</a> </td></tr> <tr> <td rowspan="4">1022 </td> <td rowspan="4"><a href="#10_zettametres">10 Zm</a> </td> <td>13.25 Zm </td> <td>Radius of the diffuse stellar halo of <a href="/wiki/IC_1101" title="IC 1101">IC 1101</a>, one of the largest-known galaxies </td></tr> <tr> <td>24 Zm </td> <td>Distance to <a href="/wiki/Andromeda_Galaxy" title="Andromeda Galaxy">Andromeda Galaxy</a> </td></tr> <tr> <td>30.857 Zm </td> <td>1 <a href="/wiki/Megaparsec" class="mw-redirect" title="Megaparsec">megaparsec</a> </td></tr> <tr> <td>50 Zm </td> <td>Diameter of <a href="/wiki/Local_Group" title="Local Group">Local Group</a> of <a href="/wiki/Galaxy" title="Galaxy">galaxies</a> </td></tr> <tr> <td>1023 </td> <td><a href="#100_zettametres">100 Zm</a> </td> <td>300–600 Zm </td> <td>Distance to <a href="/wiki/Virgo_cluster" class="mw-redirect" title="Virgo cluster">Virgo cluster</a> of <a href="/wiki/Galaxy" title="Galaxy">galaxies</a> </td></tr> <tr> <td rowspan="4">1024 </td> <td rowspan="4"><a href="#1_yottametre">1 yottametre</a> (Ym) </td> <td>2.19 Ym </td> <td>Diameter of the <a href="/wiki/Local_Supercluster" class="mw-redirect" title="Local Supercluster">Local Supercluster</a> and the largest voids and filaments </td></tr> <tr> <td>2.8 Ym </td> <td><a href="/wiki/End_of_Greatness" class="mw-redirect" title="End of Greatness">End of Greatness</a> </td></tr> <tr> <td>~5 Ym </td> <td>Diameter of the <a href="/wiki/Horologium_Supercluster" class="mw-redirect" title="Horologium Supercluster">Horologium Supercluster</a><a href="#cite_note-52">[50]</a> </td></tr> <tr> <td>9.461 Ym </td> <td>Diameter of the <a href="/wiki/Pisces%E2%80%93Cetus_Supercluster_Complex" title="Pisces–Cetus Supercluster Complex">Pisces–Cetus Supercluster Complex</a>, the supercluster complex which includes Earth </td></tr> <tr> <td rowspan="3">1025 </td> <td rowspan="3"><a href="#10_yottametres">10 Ym</a> </td> <td>13 Ym </td> <td>Length of the <a href="/wiki/Sloan_Great_Wall" title="Sloan Great Wall">Sloan Great Wall</a>, a giant wall of galaxies (<a href="/wiki/Galactic_filament" class="mw-redirect" title="Galactic filament">galactic filament</a>)<a href="#cite_note-53">[51]</a> </td></tr> <tr> <td>30.857 Ym </td> <td>1 <a href="/wiki/Gigaparsec" class="mw-redirect" title="Gigaparsec">gigaparsec</a> </td></tr> <tr> <td>37.84 Ym </td> <td>Length of the <a href="/wiki/Huge-LQG" title="Huge-LQG">Huge-LQG</a>, a group of 73 <a href="/wiki/Quasar" title="Quasar">quasars</a> </td></tr> <tr> <td rowspan="3">1026 </td> <td rowspan="3"><a href="#100_yottametres">100 Ym</a> </td> <td>95 Ym </td> <td>Estimated <a href="/wiki/Distance_measures_(cosmology)" class="mw-redirect" title="Distance measures (cosmology)">light travel distance</a> to certain <a href="/wiki/Quasars" class="mw-redirect" title="Quasars">quasars</a>. Length of the <a href="/wiki/Hercules%E2%80%93Corona_Borealis_Great_Wall" title="Hercules–Corona Borealis Great Wall">Hercules–Corona Borealis Great Wall</a>, a colossal wall of galaxies, the largest and the most massive structure in the observable universe as of 2014 </td></tr> <tr> <td>127 Ym </td> <td>Estimated light travel distance to <a href="/wiki/GN-z11" title="GN-z11">GN-z11</a>, the <a href="/wiki/List_of_the_most_distant_astronomical_objects" title="List of the most distant astronomical objects">most distant object</a> ever observed </td></tr> <tr> <td>870 Ym </td> <td>Approximate diameter (<a href="/wiki/Comoving_distance" class="mw-redirect" title="Comoving distance">comoving distance</a>) of the <a href="/wiki/Visible_universe" class="mw-redirect" title="Visible universe">visible universe</a><a href="#cite_note-Burgess_and_Quevedo-2">[1]</a> </td></tr> <tr> <td>1027 </td> <td><a href="#1_ronnametre">1 Rm</a> </td> <td>1.2 Rm </td> <td>Lower bound of the (possibly infinite) radius of the universe, if it is a <a href="/wiki/3-sphere" title="3-sphere">3-sphere</a>, according to one estimate using the <a href="/wiki/Wilkinson_Microwave_Anisotropy_Probe" title="Wilkinson Microwave Anisotropy Probe">WMAP</a> data at 95% confidence<a href="#cite_note-54">[52]</a> It equivalently implies that there are at minimum 21 <a href="/wiki/Particle_horizon" title="Particle horizon">particle horizon</a>-sized volumes in the universe. </td></tr> <tr> <td><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 10^{10^{115}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>115</mn> </mrow> </msup> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 10^{10^{115}}}</annotation> </semantics> </math><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/b2a2b2aaac5f0290fdd5a3fde644089fcf0714e2" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:6.367ex; height:3.009ex;" alt="{\displaystyle 10^{10^{115}}}"><a href="#cite_note-exponents-55">[note 3]</a> </td> <td><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 10^{10^{115}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>115</mn> </mrow> </msup> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 10^{10^{115}}}</annotation> </semantics> </math><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/b2a2b2aaac5f0290fdd5a3fde644089fcf0714e2" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:6.367ex; height:3.009ex;" alt="{\displaystyle 10^{10^{115}}}"> m </td> <td><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 10^{10^{115}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>115</mn> </mrow> </msup> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 10^{10^{115}}}</annotation> </semantics> </math><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/b2a2b2aaac5f0290fdd5a3fde644089fcf0714e2" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:6.367ex; height:3.009ex;" alt="{\displaystyle 10^{10^{115}}}"> m </td> <td>According to the laws of probability, the distance one must travel until one encounters a volume of space identical to our <a href="/wiki/Observable_universe" title="Observable universe">observable universe</a> with conditions identical to our own.<a href="#cite_note-TegmarkPUstaple-56">[53]</a><a href="#cite_note-57">[54]</a> </td></tr> <tr> <td><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 10^{10^{10^{122}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>122</mn> </mrow> </msup> </mrow> </msup> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 10^{10^{10^{122}}}}</annotation> </semantics> </math><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/f0da4c6feb5287d705dc0f51c21317c5ddbce34b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:7.835ex; height:3.509ex;" alt="{\displaystyle 10^{10^{10^{122}}}}"> </td> <td><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 10^{10^{10^{122}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>122</mn> </mrow> </msup> </mrow> </msup> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 10^{10^{10^{122}}}}</annotation> </semantics> </math><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/f0da4c6feb5287d705dc0f51c21317c5ddbce34b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:7.835ex; height:3.509ex;" alt="{\displaystyle 10^{10^{10^{122}}}}"> m </td> <td><math xmlns="http://www.w3.org/1998/Math/MathML" alttext="{\displaystyle 10^{10^{10^{122}}}}"> <semantics> <mrow class="MJX-TeXAtom-ORD"> <mstyle displaystyle="true" scriptlevel="0"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <msup> <mn>10</mn> <mrow class="MJX-TeXAtom-ORD"> <mn>122</mn> </mrow> </msup> </mrow> </msup> </mrow> </msup> </mstyle> </mrow> <annotation encoding="application/x-tex">{\displaystyle 10^{10^{10^{122}}}}</annotation> </semantics> </math><img src="https://wikimedia.org/api/rest_v1/media/math/render/svg/f0da4c6feb5287d705dc0f51c21317c5ddbce34b" class="mwe-math-fallback-image-inline mw-invert skin-invert" aria-hidden="true" style="vertical-align: -0.338ex; width:7.835ex; height:3.509ex;" alt="{\displaystyle 10^{10^{10^{122}}}}"> m </td> <td>Maximum size of universe after <a href="/wiki/Inflation_(cosmology)" class="mw-redirect" title="Inflation (cosmology)">cosmological inflation</a>, implied by one resolution of the <a href="/wiki/Hartle%E2%80%93Hawking_state" title="Hartle–Hawking state">No-Boundary Proposal</a><a href="#cite_note-58">[55]</a> </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="1_quectometre_and_less">1 quectometre and less</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=8" title="Edit section: 1 quectometre and less">edit</a>]</div> The <style data-mw-deduplicate="TemplateStyles:r1238216509">.mw-parser-output .vanchor>:target~.vanchor-text{background-color:#b1d2ff}@media screen{html.skin-theme-clientpref-night .mw-parser-output .vanchor>:target~.vanchor-text{background-color:#0f4dc9}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .vanchor>:target~.vanchor-text{background-color:#0f4dc9}}</style>quectometre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">qm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−30 <a href="/wiki/Metre" title="Metre">metres</a>. To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> shorter than 10−30 <a href="/wiki/Metre" title="Metre">m</a> (1 qm). <ul><li>1.6 × 10−5 quectometres (1.6 × 10−35 metres) – the <a href="/wiki/Planck_length" class="mw-redirect" title="Planck length">Planck length</a> (Measures of distance shorter than this do not make physical sense, according to current theories of <a href="/wiki/Physics" title="Physics">physics</a>.)</li> <li>1 qm – 1 quectometre, the smallest named subdivision of the metre in the <a href="/wiki/SI_base_unit" title="SI base unit">SI base unit</a> of length, one nonillionth of a metre.<a href="#cite_note-bipm.org-59">[56]</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="1_rontometre">1 rontometre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=9" title="Edit section: 1 rontometre">edit</a>]</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">rontometre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">rm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−27 <a href="/wiki/Metre" title="Metre">metres</a>. <ul><li>1 rm – 1 rontometre, a subdivision of the metre in the <a href="/wiki/SI_base_unit" title="SI base unit">SI base unit</a> of length, one octillionth of a metre.<a href="#cite_note-bipm.org-59">[56]</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="10_rontometres">10 rontometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=10" title="Edit section: 10 rontometres">edit</a>]</div> <ul><li>10 rm – the length of one side of a square whose area is one <a href="/wiki/List_of_humorous_units_of_measurement#Barn,_outhouse,_shed" title="List of humorous units of measurement">shed</a>, a unit of <a href="/wiki/Cross_section_(physics)" title="Cross section (physics)">target cross section</a> used in <a href="/wiki/Nuclear_physics" title="Nuclear physics">nuclear physics</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="1_yoctometre">1 yoctometre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=11" title="Edit section: 1 yoctometre">edit</a>]</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">yoctometre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">ym) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−24 <a href="/wiki/Metre" title="Metre">metres</a>. <ul><li>2 ym – the effective cross-section radius of 1 <a href="/wiki/MeV" class="mw-redirect" title="MeV">MeV</a> <a href="/wiki/Neutrino" title="Neutrino">neutrinos</a> as measured by <a href="/wiki/Clyde_Cowan" title="Clyde Cowan">Clyde Cowan</a> and <a href="/wiki/Frederick_Reines" title="Frederick Reines">Frederick Reines</a>.<a href="#cite_note-60">[57]</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="1_zeptometre">1 zeptometre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=12" title="Edit section: 1 zeptometre">edit</a>]</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">zeptometre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">zm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−21 <a href="/wiki/Metre" title="Metre">metres</a>. To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−21 <a href="/wiki/Metre" title="Metre">m</a> and 10−20 m (1 zm and 10 zm). <ul><li>2 zm – the upper bound for the width of a <a href="/wiki/Cosmic_string" title="Cosmic string">cosmic string</a> in string theory.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>2 zm – radius of effective <a href="/wiki/Cross_section_(physics)" title="Cross section (physics)">cross section</a> for a <a href="/wiki/Orders_of_magnitude_(energy)#1E-9" title="Orders of magnitude (energy)">20</a> <a href="/wiki/GeV" class="mw-redirect" title="GeV">GeV</a> <a href="/wiki/Neutrino" title="Neutrino">neutrino</a> scattering off a <a href="/wiki/Nucleon" title="Nucleon">nucleon</a><a href="#cite_note-NaveN3-4">[3]</a></li> <li>7 zm – radius of effective cross section for a <a href="/wiki/Orders_of_magnitude_(energy)#1E-9" title="Orders of magnitude (energy)">250</a>[<a href="/wiki/MOS:BROKENSECTIONLINKS" class="mw-redirect" title="MOS:BROKENSECTIONLINKS">broken anchor</a>] GeV neutrino scattering off a nucleon<a href="#cite_note-NaveN3-4">[3]</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="10_zeptometres">10 zeptometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=13" title="Edit section: 10 zeptometres">edit</a>]</div> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−20 <a href="/wiki/Metre" title="Metre">m</a> and 10−19 m (10 <a href="/wiki/Zeptometre" class="mw-redirect" title="Zeptometre">zm</a> and 100 zm). <div class="mw-heading mw-heading2"><h2 id="100_zeptometres">100 zeptometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=14" title="Edit section: 100 zeptometres">edit</a>]</div> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists lengths between 10−19 <a href="/wiki/Metre" title="Metre">m</a> and 10−18 m (100 <a href="/wiki/Zeptometre" class="mw-redirect" title="Zeptometre">zm</a> and 1 <a href="/wiki/Attometre" class="mw-redirect" title="Attometre">am</a>). <ul><li>177 zm – <a href="/wiki/De_Broglie_wavelength" class="mw-redirect" title="De Broglie wavelength">de Broglie wavelength</a> of <a href="/wiki/Protons" class="mw-redirect" title="Protons">protons</a> at the <a href="/wiki/Large_Hadron_Collider" title="Large Hadron Collider">Large Hadron Collider</a> (7 TeV as of 2010)[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_attometre">1 attometre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=15" title="Edit section: 1 attometre">edit</a>]</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">attometre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">am) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−18 <a href="/wiki/Metre" title="Metre">metres</a>. To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−18 <a href="/wiki/Metre" title="Metre">m</a> and 10−17 m (1 am and 10 am). <ul><li>1 am – sensitivity of the <a href="/wiki/LIGO" title="LIGO">LIGO</a> detector for <a href="/wiki/Gravitational_wave" title="Gravitational wave">gravitational waves</a>[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>1 am – upper limit for the size of <a href="/wiki/Quark" title="Quark">quarks</a> and <a href="/wiki/Electron" title="Electron">electrons</a>[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li></ul> <div class="mw-heading mw-heading2"><h2 id="10_attometres">10 attometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=16" title="Edit section: 10 attometres">edit</a>]</div> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−17 <a href="/wiki/Metre" title="Metre">m</a> and 10−16 m (10 <a href="/wiki/Attometre" class="mw-redirect" title="Attometre">am</a> and 100 am). <ul><li>10–100 am – range of the weak force<a href="#cite_note-61">[58]</a></li> <li>86 am – charge radius of a <a href="/wiki/Eta_meson" class="mw-redirect" title="Eta meson">Bottom eta meson</a><a href="#cite_note-quarkonia-62">[59]</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="100_attometres">100 attometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=17" title="Edit section: 100 attometres">edit</a>]</div> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists lengths between 10−16 <a href="/wiki/Metre" title="Metre">m</a> and 10−15 m (100 <a href="/wiki/Attometre" class="mw-redirect" title="Attometre">am</a> and 1 <a href="/wiki/Femtometre" title="Femtometre">fm</a>). <ul><li>831 am – approximate proton radius<a href="#cite_note-63">[60]</a><a href="#cite_note-64">[61]</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="1_femtometre_(or_1_fermi)">1 femtometre (or 1 fermi)</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=18" title="Edit section: 1 femtometre (or 1 fermi)">edit</a>]</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509"><a href="/wiki/Femtometre" title="Femtometre">femtometre</a> (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">fm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−15 <a href="/wiki/Metre" title="Metre">metres</a>. In <a href="/wiki/Particle_physics" title="Particle physics">particle physics</a>, this unit is sometimes called a <a href="/wiki/Fermi_(unit)" class="mw-redirect" title="Fermi (unit)"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">fermi</a>, also with abbreviation "fm". To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−15 <a href="/wiki/Metre" title="Metre">metres</a> and 10−14 metres (1 femtometre and 10 fm). <ul><li>1 fm – diameter of a <a href="/wiki/Neutron" title="Neutron">neutron</a>, approximate range-limit of the <a href="/wiki/Strong_interaction" title="Strong interaction">color force</a> carried between <a href="/wiki/Quark" title="Quark">quarks</a> by <a href="/wiki/Gluon" title="Gluon">gluons</a><a href="#cite_note-profmattstrassler-7">[6]</a><a href="#cite_note-Kolena_at_Duke-8">[7]</a></li> <li>1.5 fm – diameter of the <a href="/wiki/Cross_section_(physics)" title="Cross section (physics)">scattering cross section</a> of an 11 <a href="/wiki/Electron_volt" class="mw-redirect" title="Electron volt">MeV</a> <a href="/wiki/Proton" title="Proton">proton</a> with a target proton<a href="#cite_note-Nav-9">[8]</a></li> <li>1.75 fm – the effective charge diameter of a <a href="/wiki/Proton" title="Proton">proton</a><a href="#cite_note-65">[62]</a></li> <li>2.81794 fm – <a href="/wiki/Classical_electron_radius" title="Classical electron radius">classical electron radius</a><a href="#cite_note-66">[63]</a></li> <li>3 fm – approximate range-limit of the <a href="/wiki/Strong_interaction" title="Strong interaction">nuclear binding force</a> mediated by <a href="/wiki/Meson" title="Meson">mesons</a><a href="#cite_note-profmattstrassler-7">[6]</a><a href="#cite_note-Kolena_at_Duke-8">[7]</a></li> <li>7 fm – the radius of the effective scattering cross section for a gold nucleus scattering a <a href="/wiki/Orders_of_magnitude_(energy)#1E-15" title="Orders of magnitude (energy)">6</a>[<a href="/wiki/MOS:BROKENSECTIONLINKS" class="mw-redirect" title="MOS:BROKENSECTIONLINKS">broken anchor</a>] <a href="/wiki/Electron_volt" class="mw-redirect" title="Electron volt">MeV</a> <a href="/wiki/Alpha_particle" title="Alpha particle">alpha particle</a> over 140 degrees<a href="#cite_note-Nav-9">[8]</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="10_femtometres">10 femtometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=19" title="Edit section: 10 femtometres">edit</a>]</div> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−14 <a href="/wiki/Metre" title="Metre">m</a> and 10−13 m (10 <a href="/wiki/Femtometre" title="Femtometre">fm</a> and 100 fm). <ul><li>1.75 to 15 fm – diameter range of the <a href="/wiki/Atomic_nucleus" title="Atomic nucleus">atomic nucleus</a>[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>10 fm – the length of one side of a square whose area is one <a href="/wiki/Barn_(unit)" title="Barn (unit)">barn</a> (10−28 m2), a unit of <a href="/wiki/Cross_section_(physics)" title="Cross section (physics)">target cross section</a> used in <a href="/wiki/Nuclear_physics" title="Nuclear physics">nuclear physics</a></li> <li>30.8568 fm – 1 quectoparsec (10−30 <a href="/wiki/Parsecs" class="mw-redirect" title="Parsecs">parsecs</a>)</li></ul> <div class="mw-heading mw-heading2"><h2 id="100_femtometres">100 femtometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=20" title="Edit section: 100 femtometres">edit</a>]</div> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists lengths between 10−13 <a href="/wiki/Metre" title="Metre">m</a> and 10−12 m (100 <a href="/wiki/Femtometre" title="Femtometre">fm</a> and 1 <a href="/wiki/Picometre" title="Picometre">pm</a>). <ul><li>570 fm – typical distance from the atomic nucleus of the two innermost electrons (electrons in the 1s shell) in the <a href="/wiki/Uranium" title="Uranium">uranium</a> atom, the heaviest naturally-occurring atom</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_picometre">1 picometre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=21" title="Edit section: 1 picometre">edit</a>]</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509"><a href="/wiki/Picometre" title="Picometre">picometre</a> (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: pm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−12 <a href="/wiki/Metre" title="Metre">metres</a> (<style data-mw-deduplicate="TemplateStyles:r1214402035">.mw-parser-output .sfrac{white-space:nowrap}.mw-parser-output .sfrac.tion,.mw-parser-output .sfrac .tion{display:inline-block;vertical-align:-0.5em;font-size:85%;text-align:center}.mw-parser-output .sfrac .num{display:block;line-height:1em;margin:0.0em 0.1em;border-bottom:1px solid}.mw-parser-output .sfrac .den{display:block;line-height:1em;margin:0.1em 0.1em}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style>⁠1/1000000000000⁠ m = 0.000000000001 m). To help compare different <a href="/wiki/Order_of_magnitude" title="Order of magnitude">orders of magnitude</a> this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−12 and 10−11 m (1 pm and 10 pm). <ul><li>1 pm – distance between <a href="/wiki/Atomic_nuclei" class="mw-redirect" title="Atomic nuclei">atomic nuclei</a> in a <a href="/wiki/White_dwarf" title="White dwarf">white dwarf</a>[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>1 pm – reference value of particle displacement in acoustics<a href="#cite_note-67">[64]</a></li> <li>2.4 pm – the <a href="/wiki/Compton_wavelength" title="Compton wavelength">Compton wavelength</a> of an <a href="/wiki/Electron" title="Electron">electron</a></li> <li>5 pm – shorter <a href="/wiki/X-ray" title="X-ray">X-ray</a> wavelengths (approx.)</li></ul> <div class="mw-heading mw-heading2"><h2 id="10_picometres">10 picometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=22" title="Edit section: 10 picometres">edit</a>]</div> To help compare different <a href="/wiki/Order_of_magnitude" title="Order of magnitude">orders of magnitude</a> this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−11 and 10−10 <a href="/wiki/Metre" title="Metre">m</a> (10 pm and 100 pm). <ul><li>25 pm – approximate radius of a helium atom, the smallest neutral atom<a href="#cite_note-webelhy-68">[65]</a><a href="#cite_note-webelhe-69">[66]</a></li> <li>30.8568 pm – 1 rontoparsec</li> <li>50 pm – radius of a hydrogen atom</li> <li>50 pm – <a href="/wiki/Bohr_radius" title="Bohr radius">bohr radius</a>: approximate radius of a hydrogen atom</li> <li>~50 pm – best resolution of a <a href="/wiki/High-resolution_transmission_electron_microscopy" title="High-resolution transmission electron microscopy">high-resolution transmission electron microscope</a></li> <li>60 pm – radius of a carbon atom</li> <li>93 pm – length of a <a href="/wiki/Diatomic_carbon" title="Diatomic carbon">diatomic carbon</a> molecule</li> <li>96 pm – H–O bond length in a <a href="/wiki/Water" title="Water">water</a> molecule</li></ul> <div class="mw-heading mw-heading2"><h2 id="100_picometres">100 picometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=23" title="Edit section: 100 picometres">edit</a>]</div> To help compare different <a href="/wiki/Order_of_magnitude" title="Order of magnitude">orders of magnitude</a> this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−10 and 10−9 <a href="/wiki/Metre" title="Metre">m</a> (100 pm and 1 nm; 1 <a href="/wiki/Angstrom" title="Angstrom">Å</a> and 10 Å). <ul><li>100 pm – 1 <a href="/wiki/%C3%85ngstr%C3%B6m" class="mw-redirect" title="Ångström">ångström</a></li> <li>100 pm – <a href="/wiki/Covalent_radius" title="Covalent radius">covalent radius</a> of <a href="/wiki/Sulfur" title="Sulfur">sulfur</a> atom<a href="#cite_note-70">[67]</a></li> <li>120 pm – <a href="/wiki/Van_der_Waals_radius" title="Van der Waals radius">van der Waals radius</a> of a neutral <a href="/wiki/Hydrogen" title="Hydrogen">hydrogen</a> atom<a href="#cite_note-71">[68]</a></li> <li>120 pm – radius of a gold atom</li> <li>126 pm – covalent radius of <a href="/wiki/Ruthenium" title="Ruthenium">ruthenium</a> atom</li> <li>135 pm – covalent radius of <a href="/wiki/Technetium" title="Technetium">technetium</a> atom</li> <li>150 pm – length of a typical <a href="/wiki/Covalent_bond" title="Covalent bond">covalent bond</a> (<a href="/wiki/Carbon" title="Carbon">C</a>–C)</li> <li>153 pm – covalent radius of <a href="/wiki/Silver" title="Silver">silver</a> atom</li> <li>155 pm – covalent radius of <a href="/wiki/Zirconium" title="Zirconium">zirconium</a> atom</li> <li>175 pm – covalent radius of <a href="/wiki/Thulium" title="Thulium">thulium</a> atom</li> <li>200 pm – highest resolution of a typical <a href="/wiki/Electron_microscope" title="Electron microscope">electron microscope</a><a href="#cite_note-72">[69]</a></li> <li>225 pm – covalent radius of <a href="/wiki/Caesium" title="Caesium">caesium</a> atom</li> <li>280 pm – average size of the <a href="/wiki/Water" title="Water">water</a> molecule</li> <li>298 pm – radius of a <a href="/wiki/Caesium" title="Caesium">caesium</a> atom, <a href="/wiki/Atomic_radius#Calculated_atomic_radii" title="Atomic radius">calculated to be</a> the largest atomic radius</li> <li>340 pm – thickness of single layer <a href="/wiki/Graphene" title="Graphene">graphene</a></li> <li>356.68 pm – width of <a href="/wiki/Diamond" title="Diamond">diamond</a> <a href="/wiki/Unit_cell" title="Unit cell">unit cell</a></li> <li>403 pm – width of <a href="/wiki/Lithium_fluoride" title="Lithium fluoride">lithium fluoride</a> unit cell</li> <li>500 pm – Width of <a href="/wiki/Protein" title="Protein">protein</a> <a href="/wiki/Alpha_helix" title="Alpha helix">α helix</a></li> <li>543 pm – silicon lattice spacing</li> <li>560 pm – width of <a href="/wiki/Sodium_chloride" title="Sodium chloride">sodium chloride</a> unit cell</li> <li>700 pm – width of <a href="/wiki/Glucose" title="Glucose">glucose</a> molecule</li> <li>700 pm – diameter of a <a href="/wiki/Buckyball" class="mw-redirect" title="Buckyball">buckyball</a><a href="#cite_note-73">[70]</a></li> <li>780 pm – mean width of <a href="/wiki/Quartz" title="Quartz">quartz</a> unit cell</li> <li>820 pm – mean width of <a href="/wiki/Ice" title="Ice">ice</a> unit cell</li> <li>900 pm – mean width of <a href="/wiki/Coesite" title="Coesite">coesite</a> unit cell</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_nanometre">1 nanometre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=24" title="Edit section: 1 nanometre">edit</a>]</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509"><a href="/wiki/Nanometre" title="Nanometre">nanometre</a> (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">nm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−9 <a href="/wiki/Metre" title="Metre">metres</a> (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035">⁠1/1000000000⁠ m = 0.000000001 m). To help compare different <a href="/wiki/Order_of_magnitude" title="Order of magnitude">orders of magnitude</a>, this section lists lengths between 10−9 and 10−8 m (1 nm and 10 nm). <ul><li>1 nm – diameter of a <a href="/wiki/Carbon_nanotube" title="Carbon nanotube">carbon nanotube</a></li> <li>1 nm – roughly the length of a <a href="/wiki/Sucrose" title="Sucrose">sucrose</a> molecule, calculated by <a href="/wiki/Albert_Einstein" title="Albert Einstein">Albert Einstein</a></li> <li>2.3 nm – length of a <a href="/wiki/Phospholipid" title="Phospholipid">phospholipid</a></li> <li>2.3 nm – smallest <a href="/wiki/Gate_(transistor)" class="mw-redirect" title="Gate (transistor)">gate</a> oxide thickness in <a href="/wiki/Microprocessor" title="Microprocessor">microprocessors</a></li> <li>3 nm – width of a <a href="/wiki/DNA" title="DNA">DNA</a> helix</li> <li>3 nm – flying height of the <a href="/wiki/Disk_read-and-write_head" title="Disk read-and-write head">head</a> of a <a href="/wiki/Hard_disk" class="mw-redirect" title="Hard disk">hard disk</a></li> <li>3 nm – the <a href="/wiki/3_nm_process" title="3 nm process">average half-pitch of a memory cell manufactured circa 2022</a></li> <li>3.4 nm – length of a DNA <a href="/wiki/Turn_(biochemistry)" title="Turn (biochemistry)">turn</a> (10 <a href="/wiki/Base_pair" title="Base pair">bp</a>)</li> <li>3.8 nm – size of an <a href="/wiki/Albumin" title="Albumin">albumin</a> molecule</li> <li>5 nm – size of the gate length of a 16 nm processor</li> <li>5 nm – the <a href="/wiki/5_nm_process" title="5 nm process">average half-pitch of a memory cell manufactured circa 2019–2020</a></li> <li>6 nm – length of a <a href="/wiki/Phospholipid" title="Phospholipid">phospholipid</a> bilayer</li> <li>6–10 nm – thickness of cell membrane</li> <li>6.8 nm – width of a <a href="/wiki/Haemoglobin" class="mw-redirect" title="Haemoglobin">haemoglobin</a> molecule</li> <li>7 nm – diameter of <a href="/wiki/Microfilament" title="Microfilament">actin filaments</a></li> <li>7 nm – the <a href="/wiki/7_nm_process" title="7 nm process">average half-pitch of a memory cell manufactured circa 2018</a></li> <li>10 nm – thickness of <a href="/wiki/Cell_wall" title="Cell wall">cell wall</a> in <a href="/wiki/Gram_staining" class="mw-redirect" title="Gram staining">Gram</a>-negative <a href="/wiki/Bacteria" title="Bacteria">bacteria</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="10_nanometres">10 nanometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=25" title="Edit section: 10 nanometres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Comparison_semiconductor_process_nodes.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c7/Comparison_semiconductor_process_nodes.svg/220px-Comparison_semiconductor_process_nodes.svg.png" decoding="async" width="220" height="170" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c7/Comparison_semiconductor_process_nodes.svg/330px-Comparison_semiconductor_process_nodes.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c7/Comparison_semiconductor_process_nodes.svg/440px-Comparison_semiconductor_process_nodes.svg.png 2x" data-file-width="990" data-file-height="765" /></a><figcaption>Comparison of sizes of semiconductor manufacturing process nodes with some microscopic objects and visible light wavelengths. At this scale, the <a href="/wiki/Hair%27s_breadth" title="Hair's breadth">width of a human hair</a> is about 10 times that of the image.<a href="#cite_note-74">[71]</a></figcaption></figure> To help compare different <a href="/wiki/Order_of_magnitude" title="Order of magnitude">orders of magnitude</a> this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−8 and 10−7 <a href="/wiki/Metre" title="Metre">m</a> (10 nm and 100 nm). <ul><li>10 nm Shortest <a href="/wiki/Extreme_ultraviolet" title="Extreme ultraviolet">extreme ultraviolet</a> wavelength or longest <a href="/wiki/X-ray" title="X-ray">X-ray</a> wavelength<a href="#cite_note-em-spectrum-75">[72]</a></li> <li>10 nm – the average length of a <a href="/wiki/Nanowire" title="Nanowire">nanowire</a></li> <li>10 nm – lower size of tobacco smoke<a href="#cite_note-Ann-76">[73]</a></li> <li>10 nm – the <a href="/wiki/10_nm_process" title="10 nm process">average half-pitch of a memory cell manufactured circa 2016</a> <a href="/wiki/32_nm_process" title="32 nm process">–</a>2017</li> <li>13 nm – the length of the wavelength that is used for <a href="/wiki/EUV_lithography" class="mw-redirect" title="EUV lithography">EUV lithography</a></li> <li>14 nm – length of a <a href="/wiki/Porcine_circovirus" title="Porcine circovirus">porcine circovirus</a></li> <li>14 nm – the <a href="/wiki/14_nm_process" title="14 nm process">average half-pitch of a memory cell manufactured circa 2013</a></li> <li>15 nm – length of an antibody</li> <li>18 nm – diameter of <a href="/wiki/Tobacco_mosaic_virus" title="Tobacco mosaic virus">tobacco mosaic virus</a><a href="#cite_note-isbn0-7167-1843-X-77">[74]</a> (Generally, <a href="/wiki/Virus_(biology)" class="mw-redirect" title="Virus (biology)">viruses</a> range in size from 20 nm to 450 nm.)[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>20 nm – length of a <a href="/wiki/Nanobe" title="Nanobe">nanobe</a>, could be one of the smallest forms of life</li> <li>20–80 nm – thickness of <a href="/wiki/Cell_wall" title="Cell wall">cell wall</a> in <a href="/wiki/Gram-positive_bacteria" title="Gram-positive bacteria">Gram-positive bacteria</a><a href="#cite_note-78">[75]</a></li> <li>20 nm – thickness of <a href="/wiki/Bacteria" title="Bacteria">bacterial</a> <a href="/wiki/Flagellum" title="Flagellum">flagellum</a><a href="#cite_note-79">[76]</a></li> <li>22 nm – the <a href="/wiki/22_nm_process" title="22 nm process">average half-pitch of a memory cell manufactured circa 2011–2012</a></li> <li>22 nm – smallest feature size of production <a href="/wiki/Microprocessor" title="Microprocessor">microprocessors</a> in September 2009<a href="#cite_note-Intel-80">[77]</a></li> <li>25 nm – diameter of a <a href="/wiki/Microtubule" title="Microtubule">microtubule</a></li> <li>30 nm – lower size of cooking oil smoke</li> <li>30.8568 nm – 1 yoctoparsec</li> <li>32 nm – the <a href="/wiki/32_nm_process" title="32 nm process">average half-pitch of a memory cell manufactured circa 2009–2010</a></li> <li>40 nm – extreme <a href="/wiki/Ultraviolet" title="Ultraviolet">ultraviolet</a> wavelength</li> <li>45 nm – the <a href="/wiki/45_nm_process" title="45 nm process">average half-pitch of a memory cell manufactured circa 2007–2008</a></li> <li>50 nm – upper size for airborne <a href="/wiki/Virus" title="Virus">virus</a> particles</li> <li>50 nm – <a href="/wiki/Flying_height" title="Flying height">flying height</a> of the <a href="/wiki/Disk_read-and-write_head" title="Disk read-and-write head">head</a> of a <a href="/wiki/Hard_disk" class="mw-redirect" title="Hard disk">hard disk</a><a href="#cite_note-81">[78]</a></li> <li>65 nm – the <a href="/wiki/65_nm_process" title="65 nm process">average half-pitch of a memory cell manufactured circa 2005–2006</a></li> <li>58 nm – height of a <a href="/wiki/T7_bacteriophage" class="mw-redirect" title="T7 bacteriophage">T7 bacteriophage</a></li> <li>90 nm – <a href="/wiki/HIV/AIDS" title="HIV/AIDS">human immunodeficiency virus (HIV)</a> (generally, <a href="/wiki/Virus" title="Virus">viruses</a> range in size from 20 nm to 450 nm)</li> <li>90 nm – the <a href="/wiki/90_nm_process" title="90 nm process">average half-pitch of a memory cell manufactured circa 2002–2003</a></li> <li>100 nm – Length of a <a href="/wiki/Mesoporous_silica" title="Mesoporous silica">mesoporous silica</a> nanoparticle</li></ul> <div class="mw-heading mw-heading2"><h2 id="100_nanometres">100 nanometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=26" title="Edit section: 100 nanometres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Comparison_semiconductor_process_nodes.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c7/Comparison_semiconductor_process_nodes.svg/330px-Comparison_semiconductor_process_nodes.svg.png" decoding="async" width="330" height="255" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c7/Comparison_semiconductor_process_nodes.svg/495px-Comparison_semiconductor_process_nodes.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c7/Comparison_semiconductor_process_nodes.svg/660px-Comparison_semiconductor_process_nodes.svg.png 2x" data-file-width="990" data-file-height="765" /></a><figcaption>Comparison of sizes of semiconductor manufacturing process nodes with some microscopic objects and visible light wavelengths. At this scale, the <a href="/wiki/Hair%27s_breadth" title="Hair's breadth">width of a human hair</a> is about 10 times that of the image.<a href="#cite_note-82">[79]</a></figcaption></figure> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−7 and 10−6 <a href="/wiki/Metre" title="Metre">m</a> (100 <a href="/wiki/Nanometre" title="Nanometre">nm</a> and 1 <a href="/wiki/Micrometre" title="Micrometre">μm</a>). <ul><li>100 nm – greatest particle size that can fit through a <a href="/wiki/Surgical_mask" title="Surgical mask">surgical mask</a><a href="#cite_note-t2-83">[80]</a></li> <li>100 nm – 90% of particles in wood <a href="/wiki/Smoke" title="Smoke">smoke</a> are smaller than this.[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>120 nm – greatest particle size that can fit through a <a href="/wiki/ULPA" class="mw-redirect" title="ULPA">ULPA</a> filter<a href="#cite_note-84">[81]</a></li> <li>120 nm – diameter of a <a href="/wiki/Human_immunodeficiency_virus" class="mw-redirect" title="Human immunodeficiency virus">human immunodeficiency virus</a> (HIV)<a href="#cite_note-85">[82]</a></li> <li>120 nm – approximate diameter of <a href="/wiki/Severe_acute_respiratory_syndrome_coronavirus_2" class="mw-redirect" title="Severe acute respiratory syndrome coronavirus 2">SARS-CoV-2</a><a href="#cite_note-86">[83]</a></li> <li>125 nm – standard depth of pits on <a href="/wiki/Compact_disc" title="Compact disc">compact discs</a> (width: 500 nm, length: 850 nm to 3.5 μm)</li> <li>180 nm – typical length of the <a href="/wiki/Rabies" title="Rabies">rabies virus</a></li> <li>200 nm – typical size of a <a href="/wiki/Mycoplasma" title="Mycoplasma">Mycoplasma</a> bacterium, among the smallest bacteria</li> <li>300 nm – greatest particle size that can fit through a <a href="/wiki/HEPA" title="HEPA">HEPA</a> (high efficiency particulate air) filter (N100 removes up to 99.97% at 300 nm, N95 removes up to 95% at 300 nm)<a href="#cite_note-87">[84]</a></li> <li>300–400 nm – near <a href="/wiki/Ultraviolet" title="Ultraviolet">ultraviolet</a> wavelength</li> <li>400–420 nm – wavelength of <a href="/wiki/Violet_(color)" title="Violet (color)">violet</a> light (see <a href="/wiki/Color" title="Color">Color</a> and <a href="/wiki/Visible_spectrum" title="Visible spectrum">Visible spectrum</a>)</li> <li>420–440 nm – wavelength of <a href="/wiki/Indigo" title="Indigo">indigo</a> light</li> <li>440–500 nm – wavelength of <a href="/wiki/Blue" title="Blue">blue</a> light</li> <li>500–520 nm – wavelength of <a href="/wiki/Cyan" title="Cyan">cyan</a> light</li> <li>520–565 nm – wavelength of <a href="/wiki/Green" title="Green">green</a> light</li> <li>565–590 nm – wavelength of <a href="/wiki/Yellow" title="Yellow">yellow</a> light</li> <li>590–625 nm – wavelength of <a href="/wiki/Orange_(colour)" title="Orange (colour)">orange</a> light</li> <li>625–700 nm – wavelength of <a href="/wiki/Red" title="Red">red</a> light</li> <li>700–1.4 μm – wavelength of <a href="/wiki/Near-infrared" class="mw-redirect" title="Near-infrared">near-infrared</a> radiation</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_micrometre_(or_1_micron)">1 micrometre (or 1 micron)</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=27" title="Edit section: 1 micrometre (or 1 micron)">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Loxoceles_reclusa_iconized_thread.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Loxoceles_reclusa_iconized_thread.png/170px-Loxoceles_reclusa_iconized_thread.png" decoding="async" width="170" height="333" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/f/f5/Loxoceles_reclusa_iconized_thread.png 1.5x" data-file-width="192" data-file-height="376" /></a><figcaption>The silk for a spider's web is 5–7 μm (0.00020–0.00028 in) wide.</figcaption></figure> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509"><a href="/wiki/Micrometre" title="Micrometre">micrometre</a> (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">μm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−6 <a href="/wiki/Metre" title="Metre">metres</a> (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035">⁠1/1000000⁠ m = 0.000001 m). To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists some items with lengths between 10−6 and 10−5 m (between 1 and 10 <a href="/wiki/Micrometre" title="Micrometre">micrometres</a>, or μm). <ul><li>~0.7–300 μm – wavelength of <a href="/wiki/Infrared_radiation" class="mw-redirect" title="Infrared radiation">infrared radiation</a></li> <li>1 μm – the side of a <a href="/wiki/Square_(geometry)" class="mw-redirect" title="Square (geometry)">square</a> of area <a href="/wiki/Orders_of_magnitude_(area)" title="Orders of magnitude (area)">10−12 m2</a></li> <li>1 μm – edge of <a href="/wiki/Cube_(geometry)" class="mw-redirect" title="Cube (geometry)">cube</a> of volume <a href="/wiki/Orders_of_magnitude_(volume)" title="Orders of magnitude (volume)">10−18 m3</a> (1 fL)</li> <li>1–10 μm – diameter of a typical <a href="/wiki/Bacterium" class="mw-redirect" title="Bacterium">bacterium</a>[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>1 μm – length of a <a href="/wiki/Lysosome" title="Lysosome">lysosome</a></li> <li>1–2 μm – <a href="/wiki/Anthrax_disease" class="mw-redirect" title="Anthrax disease">anthrax</a> spore<a href="#cite_note-88">[85]</a></li> <li>2 μm – length of an average <a href="/wiki/E._coli" class="mw-redirect" title="E. coli">E. coli</a> bacteria</li> <li>3–4 μm – size of a typical <a href="/wiki/Yeast" title="Yeast">yeast</a> cell<a href="#cite_note-Walker-89">[86]</a></li> <li>5 μm – length of a typical human <a href="/wiki/Spermatozoon" title="Spermatozoon">spermatozoon</a>'s head<a href="#cite_note-90">[87]</a></li> <li>6 μm – thickness of the tape in a 120-minute (C120) <a href="/wiki/Compact_cassette" class="mw-redirect" title="Compact cassette">compact cassette</a><a href="#cite_note-91">[88]</a></li> <li>7 μm – diameter of the <a href="/wiki/Cell_nucleus" title="Cell nucleus">nucleus</a> of a typical eukaryotic <a href="/wiki/Cell_(biology)" title="Cell (biology)">cell</a>[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>about 7 μm – diameter of human <a href="/wiki/Red_blood_cell" title="Red blood cell">red blood cells</a><a href="#cite_note-dnaftb-92">[89]</a></li> <li>3–8 μm – width of strand of <a href="/wiki/Spider_silk" title="Spider silk">spider web silk</a><a href="#cite_note-93">[90]</a></li> <li>5–10 μm – width of a <a href="/wiki/Chloroplast" title="Chloroplast">chloroplast</a><a href="#cite_note-94">[91]</a></li> <li>8–11 μm – size of a ground-level fog or mist droplet<a href="#cite_note-95">[92]</a><a href="#cite_note-96">[note 4]</a></li> <li>7–12 μm – the diameter of human <a href="/wiki/White_blood_cell" title="White blood cell">white blood cells</a></li> <li>8–10 μm – the diameter of human <a href="/wiki/Macrophage" title="Macrophage">macrophages</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="10_micrometres">10 micrometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=28" title="Edit section: 10 micrometres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:FogParticlesHighSpeed.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/FogParticlesHighSpeed.jpg/220px-FogParticlesHighSpeed.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/c5/FogParticlesHighSpeed.jpg/330px-FogParticlesHighSpeed.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/c5/FogParticlesHighSpeed.jpg/440px-FogParticlesHighSpeed.jpg 2x" data-file-width="1280" data-file-height="960" /></a><figcaption>Fog particles are around 10–50 μm (0.00039–0.00197 in) long.</figcaption></figure> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−5 <a href="/wiki/Metre" title="Metre">m</a> and 10−4 m (10 <a href="/wiki/Micrometre" title="Micrometre">μm</a> and 100 μm). <ul><li>10 μm – width of <a href="/wiki/Cotton" title="Cotton">cotton</a> fibre<a href="#cite_note-ISTAG-97">[93]</a></li> <li>10 μm – <a href="/wiki/Engineering_tolerance" title="Engineering tolerance">tolerance</a> of a <a href="/wiki/Lego" title="Lego">Lego</a> brick<a href="#cite_note-Companyprofile-98">[94]</a></li> <li>10 μm – <a href="/wiki/Transistor" title="Transistor">transistor</a> width of the <a href="/wiki/Intel_4004" title="Intel 4004">Intel 4004</a>, the world's first commercial <a href="/wiki/Microprocessor" title="Microprocessor">microprocessor</a></li> <li>10 μm – mean longest dimension of a human <a href="/wiki/Red_blood_cell" title="Red blood cell">red blood cell</a>[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>5–20 μm – <a href="/wiki/Dust_mite" class="mw-redirect" title="Dust mite">dust mite</a> excreta<a href="#cite_note-99">[95]</a></li> <li>10.6 μm – wavelength of light emitted by a <a href="/wiki/Carbon_dioxide_laser" class="mw-redirect" title="Carbon dioxide laser">carbon dioxide laser</a></li> <li>15 μm – width of <a href="/wiki/Silk" title="Silk">silk</a> fibre[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>17 μm – minimum width of a strand of human hair<a href="#cite_note-Physics_Factbook-26">[25]</a></li> <li>17.6 μm – one <a href="/wiki/Twip" title="Twip">twip</a>, a unit of length in typography</li> <li>10 to 55 μm – width of <a href="/wiki/Wool" title="Wool">wool</a> fibre<a href="#cite_note-ISTAG-97">[93]</a></li> <li>25.4 μm – 1/1,000 inch, commonly referred to as 1 <a href="/wiki/Thou_(unit_of_length)" class="mw-redirect" title="Thou (unit of length)">mil</a> in the U.S. and 1 <a href="/wiki/Thou_(unit_of_length)" class="mw-redirect" title="Thou (unit of length)">thou</a> in the UK</li> <li>30 μm – length of a human <a href="/wiki/Skin_cell" class="mw-redirect" title="Skin cell">skin cell</a></li> <li>30.8568 μm – 1 zeptoparsec</li> <li>50 μm – typical length of <a href="/wiki/Euglena_gracilis" title="Euglena gracilis">Euglena gracilis</a>, a flagellate protist<a href="#cite_note-100">[96]</a></li> <li>50 μm – typical length of a human <a href="/wiki/Liver" title="Liver">liver</a> cell, an average-sized body cell[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>50 μm – length of a <a href="/wiki/Silt" title="Silt">silt</a> particle</li> <li>60 μm – length of a <a href="/wiki/Sperm_cell" class="mw-redirect" title="Sperm cell">sperm cell</a></li> <li>78 μm — width of a pixel on the display of the iPhone 4, marketed as <a href="/wiki/Retina_Display" class="mw-redirect" title="Retina Display">Retina Display</a><a href="#cite_note-101">[97]</a></li> <li>70 to 180 μm – thickness of paper</li></ul> <div class="mw-heading mw-heading2"><h2 id="100_micrometres">100 micrometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=29" title="Edit section: 100 micrometres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Paramecium.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Paramecium.jpg/220px-Paramecium.jpg" decoding="async" width="220" height="216" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Paramecium.jpg/330px-Paramecium.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Paramecium.jpg/440px-Paramecium.jpg 2x" data-file-width="751" data-file-height="738" /></a><figcaption>A <a href="/wiki/Paramecium" title="Paramecium">paramecium</a> is around 300 μm (0.012 in) long.</figcaption></figure> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10−4 <a href="/wiki/Metre" title="Metre">m</a> and 10−3 m (100 <a href="/wiki/Micrometre" title="Micrometre">μm</a> and 1 <a href="/wiki/Millimetre" title="Millimetre">mm</a>). The term myriometre (abbr. mom, equivalent to 100 micrometres; frequently confused with the <a href="#Myriametre">myriametre</a>, 10 kilometres)<a href="#cite_note-102">[98]</a> is deprecated; the decimal metric prefix <a href="/wiki/Myria-" title="Myria-">myrio-</a><a href="#cite_note-fr-103">[99]</a> is obsolete<a href="#cite_note-Procès-Verbaux_1935-104">[100]</a><a href="#cite_note-Roberts_1975-105">[101]</a><a href="#cite_note-Judson_1976-106">[102]</a> and was not included among the <a href="/wiki/SI_prefixes" class="mw-redirect" title="SI prefixes">prefixes</a> when the <a href="/wiki/International_System_of_Units" title="International System of Units">International System of Units</a> was introduced in 1960. <ul><li>100 μm – 1/10 of a millimetre</li> <li>100 μm – 0.00394 inches</li> <li>100 μm – smallest distance that can be seen with the <a href="/wiki/Naked_eye" title="Naked eye">naked eye</a></li> <li>100 μm – average diameter of a strand of <a href="/wiki/Human_hair" class="mw-redirect" title="Human hair">human hair</a><a href="#cite_note-Physics_Factbook-26">[25]</a></li> <li>100 μm – thickness of a coat of <a href="/wiki/Paint" title="Paint">paint</a></li> <li>100 μm – length of a <a href="/wiki/Dust" title="Dust">dust</a> particle</li> <li>120 μm – the <a href="/wiki/Geometric_mean" title="Geometric mean">geometric mean</a> of the <a href="/wiki/Planck_length" class="mw-redirect" title="Planck length">Planck length</a> and the diameter of the <a href="/wiki/Observable_universe" title="Observable universe">observable universe</a>: √8.8 × 1026 m × 1.6 × 10−35 m</li> <li>120 μm – diameter of a <a href="/wiki/Human" title="Human">human</a> <a href="/wiki/Ovum" class="mw-redirect" title="Ovum">ovum</a></li> <li>170 μm – length of the largest mammalian <a href="/wiki/Sperm_cell" class="mw-redirect" title="Sperm cell">sperm cell</a> (rat)<a href="#cite_note-107">[103]</a></li> <li>170 μm – length of the largest <a href="/wiki/Sperm_cell" class="mw-redirect" title="Sperm cell">sperm cell</a> in nature, belonging to the <a href="/wiki/Drosophila_bifurca" title="Drosophila bifurca">Drosophila bifurca</a> fruit fly<a href="#cite_note-108">[104]</a><a href="#cite_note-109">[105]</a></li> <li>181 μm – maximum width of a strand of human hair<a href="#cite_note-Physics_Factbook-26">[25]</a></li> <li>100–400 μm – length of <a href="/wiki/Demodex_mite" class="mw-redirect" title="Demodex mite">Demodex mites</a> living in human <a href="/wiki/Hair_follicle" title="Hair follicle">hair follicles</a></li> <li>175–200 μm – typical thickness of a <a href="/wiki/Solar_cell" title="Solar cell">solar cell</a>.</li> <li>200 μm – typical length of <a href="/wiki/Paramecium" title="Paramecium">Paramecium caudatum</a>, a ciliate protist</li> <li>200 μm – nominal width of the smallest commonly available mechanical pencil lead (0.2 mm)</li> <li>250–300 μm – length of a <a href="/wiki/Dust_mite" class="mw-redirect" title="Dust mite">dust mite</a><a href="#cite_note-110">[106]</a></li> <li>340 μm – length of a <a href="/wiki/Pixel" title="Pixel">pixel</a> on a 17-inch monitor with a resolution of 1024×768</li> <li>500 μm – typical length of <a href="/wiki/Amoeba_proteus" title="Amoeba proteus">Amoeba proteus</a>, an amoeboid protist</li> <li>500 μm – <a href="/wiki/Microelectromechanical_systems" class="mw-redirect" title="Microelectromechanical systems">MEMS</a> micro-engine<a href="#cite_note-111">[107]</a></li> <li>500 μm – average length of a grain of <a href="/wiki/Sand" title="Sand">sand</a></li> <li>500 μm – average length of a grain of <a href="/wiki/Salt" title="Salt">salt</a></li> <li>500 μm – average length of a grain of <a href="/wiki/Sugar" title="Sugar">sugar</a></li> <li>560 μm – thickness of the central area of a human <a href="/wiki/Cornea" title="Cornea">cornea</a><a href="#cite_note-ReferenceA-27">[26]</a></li> <li>750 μm – diameter of a <a href="/wiki/Thiomargarita_namibiensis" title="Thiomargarita namibiensis">Thiomargarita namibiensis</a>, the largest bacteria known<a href="#cite_note-112">[108]</a></li> <li>760 μm – thickness of an <a href="/wiki/ISO/IEC_7810" title="ISO/IEC 7810">identification card</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="1_millimetre">1 millimetre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=30" title="Edit section: 1 millimetre">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Fire_ants_01.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/94/Fire_ants_01.jpg/170px-Fire_ants_01.jpg" decoding="async" width="170" height="304" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/94/Fire_ants_01.jpg/255px-Fire_ants_01.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/94/Fire_ants_01.jpg/340px-Fire_ants_01.jpg 2x" data-file-width="1058" data-file-height="1890" /></a><figcaption>An average <a href="/wiki/Fire_ant" title="Fire ant">red ant</a> is about 5 mm (0.20 in) long.</figcaption></figure> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">"1mm" redirects here. For the Perfume song, see <a href="/wiki/Level3_(Perfume_album)" title="Level3 (Perfume album)">Level3 (Perfume album)</a>. For the measure, see <a href="/wiki/Millimetre" title="Millimetre">millimetre</a>.</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509"><a href="/wiki/Millimetre" title="Millimetre">millimetre</a> (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">mm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−3 <a href="/wiki/Metre" title="Metre">metres</a> (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035">⁠1/1000⁠ m = 0.001 m). To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists lengths between 10−3 m and 10−2 m (1 mm and 1 cm). <ul><li>1.0 mm – 1/1,000 of a metre</li> <li>1.0 mm – 0.03937 <a href="/wiki/Inch" title="Inch">inches</a> or 5/127 (exactly)</li> <li>1.0 mm – side of a <a href="/wiki/Square_(geometry)" class="mw-redirect" title="Square (geometry)">square</a> of area <a href="/wiki/1_E-6_m%C2%B2" class="mw-redirect" title="1 E-6 m²">1 mm²</a></li> <li>1.0 mm – diameter of a pinhead</li> <li>1.5 mm – average length of a flea<a href="#cite_note-BugGuide-28">[27]</a></li> <li>2.54 mm – distance between pins on old <a href="/wiki/Dual_in-line_package" title="Dual in-line package">dual in-line package</a> (DIP) electronic components</li> <li>5 mm – length of an average red ant</li> <li>5 mm – diameter of an average grain of rice</li> <li><a href="/wiki/5.56%C3%9745mm_NATO" title="5.56×45mm NATO">5.56×45mm NATO</a> – standard ammunition size</li> <li>6 mm – approximate width of a pencil</li> <li>7 mm – length of a <a href="/wiki/Paedophryne_amauensis" title="Paedophryne amauensis">Paedophryne amauensis</a>, the smallest-known vertebrate<a href="#cite_note-113">[109]</a></li> <li>7.1 mm – length of a sunflower seed</li> <li><a href="/wiki/7.62%C3%9751mm_NATO" title="7.62×51mm NATO">7.62×51mm NATO</a> – common military ammunition size<a href="#cite_note-114">[110]</a></li> <li>8 mm – width of old-format home movie film</li> <li>8 mm – length of a <a href="/wiki/Paedocypris_progenetica" title="Paedocypris progenetica">Paedocypris progenetica</a>, the smallest-known fish<a href="#cite_note-115">[111]</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="1_centimetre">1 centimetre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=31" title="Edit section: 1 centimetre">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Fingernail_label_(enwiki).jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Fingernail_label_%28enwiki%29.jpg/220px-Fingernail_label_%28enwiki%29.jpg" decoding="async" width="220" height="134" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Fingernail_label_%28enwiki%29.jpg/330px-Fingernail_label_%28enwiki%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Fingernail_label_%28enwiki%29.jpg/440px-Fingernail_label_%28enwiki%29.jpg 2x" data-file-width="1044" data-file-height="634" /></a><figcaption>An average human <a href="/wiki/Fingernail" class="mw-redirect" title="Fingernail">fingernail</a> is 1 cm (0.39 in) wide</figcaption></figure> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"10 mm" redirects here. For firearms cartridges, see <a href="/wiki/10_mm_calibre" class="mw-redirect" title="10 mm calibre">10 mm calibre</a>.</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509"><a href="/wiki/Centimetre" title="Centimetre">centimetre</a> (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">cm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−2 <a href="/wiki/Metre" title="Metre">metres</a> (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035">⁠1/100⁠ m = 0.01 m). To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists lengths between 10−2 m and 10−1 m (1 cm and 1 dm). <ul><li>1 cm – 10 <a href="/wiki/Millimetres" class="mw-redirect" title="Millimetres">millimetres</a></li> <li>1 cm – 0.39 <a href="/wiki/Inch" title="Inch">inches</a></li> <li>1 cm – edge of a <a href="/wiki/Square" title="Square">square</a> of area <a href="/wiki/Orders_of_magnitude_(area)" title="Orders of magnitude (area)">1 cm2</a></li> <li>1 cm – edge of a <a href="/wiki/Cube_(geometry)" class="mw-redirect" title="Cube (geometry)">cube</a> of volume <a href="/wiki/Orders_of_magnitude_(volume)" title="Orders of magnitude (volume)">1 mL</a></li> <li>1 cm – length of a coffee bean</li> <li>1 cm – approximate width of average fingernail</li> <li>1.2 cm – length of a bee</li> <li>1.2 cm – diameter of a die</li> <li>1.5 cm – length of a very large mosquito</li> <li>1.6 cm – length of a Jaragua Sphaero, a very small reptile</li> <li>1.7 cm – length of a Thorius arboreus, the smallest salamander<a href="#cite_note-116">[112]</a></li> <li>2 cm – approximate width of an adult human finger</li> <li>2.54 cm – 1 inch</li> <li>3.08568 cm – 1 <a href="/wiki/Attoparsec" class="mw-redirect" title="Attoparsec">attoparsec</a></li> <li>3.4 cm – length of a quail egg<a href="#cite_note-117">[113]</a></li> <li>3.5 cm – width of film commonly used in motion pictures and still photography</li> <li>3.78 cm – amount of distance the Moon moves away from Earth each year<a href="#cite_note-118">[114]</a></li> <li>4.3 cm – minimum diameter of a golf ball<a href="#cite_note-119">[115]</a></li> <li>5 cm – usual diameter of a chicken egg</li> <li>5 cm – height of a hummingbird, the smallest-known bird</li> <li>5.08 cm – 2 <a href="/wiki/Inch" title="Inch">inches</a>,</li> <li>5.5 × 5.5 × 5.5 cm – dimensions of a 3x3x3 Rubik's cube</li> <li>6.1 cm – average height of an apple</li> <li>7.3–7.5 cm – diameter of a baseball<a href="#cite_note-Official_Rules-29">[28]</a></li> <li>8.6 cm × 5.4 cm – dimensions of a standard credit card (also called CR80)<a href="#cite_note-120">[116]</a><a href="#cite_note-121">[117]</a></li> <li>9 cm – length of a speckled padloper, the smallest-known turtle</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_decimetre">1 decimetre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=32" title="Edit section: 1 decimetre">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"10cm" redirects here. For the band, see <a href="/wiki/10cm_(band)" title="10cm (band)">10cm (band)</a>.</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Foot_on_white_background.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/Foot_on_white_background.jpg/220px-Foot_on_white_background.jpg" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/Foot_on_white_background.jpg/330px-Foot_on_white_background.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/56/Foot_on_white_background.jpg/440px-Foot_on_white_background.jpg 2x" data-file-width="5760" data-file-height="3840" /></a><figcaption>An adult human foot is about 28 cm (11 in) long.</figcaption></figure> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509"><a href="/wiki/Decimetre" title="Decimetre">decimetre</a> (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">dm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10−1 <a href="/wiki/Metre" title="Metre">metres</a> (<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035">⁠1/10⁠ m = 0.1 m). To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists lengths between 10 <a href="/wiki/Centimetre" title="Centimetre">centimetres</a> and 100 centimetres (10−1 metre and 1 metre). <div class="mw-heading mw-heading3"><h3 id="Conversions">Conversions</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=33" title="Edit section: Conversions">edit</a>]</div> 10 centimetres (abbreviated to 10 cm) is equal to: <ul><li>1 <a href="/wiki/Decimetre" title="Decimetre">decimetre</a> (dm), a term not in common use (1 <a href="/wiki/Litre" title="Litre">L</a> = 1 dm3.)</li> <li>100 <a href="/wiki/Millimetre" title="Millimetre">millimetres</a></li> <li>3.9 <a href="/wiki/Inch" title="Inch">inches</a></li> <li>a side of a <a href="/wiki/Square_(geometry)" class="mw-redirect" title="Square (geometry)">square</a> of area <a href="/wiki/Orders_of_magnitude_(area)" title="Orders of magnitude (area)">0.01 m2</a></li> <li>the edge of a <a href="/wiki/Cube_(geometry)" class="mw-redirect" title="Cube (geometry)">cube</a> with a volume of <a href="/wiki/Orders_of_magnitude_(one_cubic_millimetre_to_one_cubic_metre)" class="mw-redirect" title="Orders of magnitude (one cubic millimetre to one cubic metre)">1×10−3 m3</a> (1 L)</li></ul> <div class="mw-heading mw-heading3"><h3 id="Wavelengths">Wavelengths</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=34" title="Edit section: Wavelengths">edit</a>]</div> <ul><li>10 cm = 1.0 dm – wavelength of the highest <a href="/wiki/Ultra_high_frequency" title="Ultra high frequency">UHF</a> radio frequency, <a href="/wiki/Picosecond" title="Picosecond">3 GHz</a></li> <li>12 cm = 1.2 dm – wavelength of the <a href="/wiki/ISM_band" class="mw-redirect" title="ISM band">2.45 GHz ISM radio band</a></li> <li>21 cm = 2.1 dm – wavelength of the <a href="/wiki/21_cm_line" class="mw-redirect" title="21 cm line">1.4 GHz hydrogen emission line</a>, a <a href="/wiki/Hyperfine_structure" title="Hyperfine structure">hyperfine</a> transition of the hydrogen atom</li> <li>100 cm = 10 dm – wavelength of the lowest UHF radio frequency, <a href="/wiki/Nanosecond" title="Nanosecond">300 MHz</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Human-defined_scales_and_structures">Human-defined scales and structures</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=35" title="Edit section: Human-defined scales and structures">edit</a>]</div> <ul><li>10.16 cm = 1.016 dm – 1 <a href="/wiki/Hand_(unit)" title="Hand (unit)">hand</a> used in measuring height of horses (4 inches)</li> <li>12 cm = 1.2 dm – diameter of a compact disc (CD) (= 120 mm)</li> <li>15 cm = 1.5 dm – length of a <a href="/wiki/Bic_Cristal" title="Bic Cristal">Bic pen</a> with cap on</li> <li>22 cm = 2.2 dm – diameter of a typical association football (soccer ball)</li> <li>30 cm = 3 dm – typical school-use ruler length (= 300 mm)</li> <li>30.48 cm = 3.048 dm – 1 <a href="/wiki/Foot_(length)" class="mw-redirect" title="Foot (length)">foot</a> (measure)</li> <li>60 cm = 6 dm – standard depth (front to back) of a domestic kitchen worktop in Europe (= 600 mm)</li> <li>90 cm = 9 dm – average length of a rapier, a fencing sword<a href="#cite_note-2-Clicks_Swords-31">[30]</a></li> <li>91.44 cm = 9.144 dm – one <a href="/wiki/Yard" title="Yard">yard</a> (measure)</li></ul> <div class="mw-heading mw-heading3"><h3 id="Nature">Nature</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=36" title="Edit section: Nature">edit</a>]</div> <ul><li>10 cm = 1 dm – diameter of the human <a href="/wiki/Cervix" title="Cervix">cervix</a> upon entering the second stage of labour</li> <li>11 cm = 1.1 dm – length of an average potato in the US</li> <li>13 cm = 1.3 dm – body length of a <a href="/wiki/Goliath_birdeater" title="Goliath birdeater">Goliath birdeater</a></li> <li>15 cm = 1.5 dm – approximate size of largest beetle species</li> <li>19 cm = 1.9 dm – length of a banana</li> <li>26.3 cm = 2.6 dm – length of average male human foot</li> <li>29.98 cm = 2.998 dm – distance light in vacuum travels in one <a href="/wiki/Nanosecond" title="Nanosecond">nanosecond</a></li> <li>30 cm = 3.0 dm – maximum leg length of a Goliath birdeater</li> <li>31 cm = 3.1 dm – wingspan of largest butterfly species <a href="/wiki/Queen_Alexandra%27s_birdwing" title="Queen Alexandra's birdwing">Ornithoptera alexandrae</a></li> <li>32 cm – length of the <a href="/wiki/Goliath_frog" title="Goliath frog">Goliath frog</a>, the world's largest frog</li> <li>46 cm = 4.6 dm – length of an average domestic cat</li> <li>50 to 65 cm = 5–6.5 dm – a coati's tail</li> <li>66 cm = 6.6 dm – length of the longest pine cones (produced by the sugar pine<a href="#cite_note-122">[118]</a>)</li></ul> <div class="mw-heading mw-heading3"><h3 id="Astronomical">Astronomical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=37" title="Edit section: Astronomical">edit</a>]</div> <ul><li>84 cm = 8.4 dm – approximate diameter of 2008 TS26, a meteoroid</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_metre">1 metre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=38" title="Edit section: 1 metre">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">"1m" redirects here. For other uses, see <a href="/wiki/1M_(disambiguation)" class="mw-redirect mw-disambig" title="1M (disambiguation)">1M</a>.</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Da_Vinci_Vitruve_Luc_Viatour.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/22/Da_Vinci_Vitruve_Luc_Viatour.jpg/220px-Da_Vinci_Vitruve_Luc_Viatour.jpg" decoding="async" width="220" height="299" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/22/Da_Vinci_Vitruve_Luc_Viatour.jpg/330px-Da_Vinci_Vitruve_Luc_Viatour.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/22/Da_Vinci_Vitruve_Luc_Viatour.jpg/440px-Da_Vinci_Vitruve_Luc_Viatour.jpg 2x" data-file-width="2258" data-file-height="3070" /></a><figcaption>Leonardo da Vinci drew the <a href="/wiki/Vitruvian_Man" title="Vitruvian Man">Vitruvian Man</a> within a square of side 1.83 m (6 ft 0 in) and a circle about 1.2 m (3 ft 11 in) in radius.</figcaption></figure> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists lengths between one <a href="/wiki/Metre" title="Metre">metre</a> and ten metres. Light, in vacuum, travels 1 metre in <style data-mw-deduplicate="TemplateStyles:r1154941027">.mw-parser-output .frac{white-space:nowrap}.mw-parser-output .frac .num,.mw-parser-output .frac .den{font-size:80%;line-height:0;vertical-align:super}.mw-parser-output .frac .den{vertical-align:sub}.mw-parser-output .sr-only{border:0;clip:rect(0,0,0,0);clip-path:polygon(0px 0px,0px 0px,0px 0px);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}</style>1⁄299,792,458, or 3.3356409519815E-9 of a second. <div class="mw-heading mw-heading3"><h3 id="Conversions_2">Conversions</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=39" title="Edit section: Conversions">edit</a>]</div> 1 <a href="/wiki/Metre" title="Metre">metre</a> is: <ul><li>10 <a href="/wiki/Decimetre" title="Decimetre">decimetres</a></li> <li>100 <a href="/wiki/Centimetre" title="Centimetre">centimetres</a></li> <li>1,000 <a href="/wiki/Millimetre" title="Millimetre">millimetres</a></li> <li>39.37 <a href="/wiki/Inch" title="Inch">inches</a></li> <li>3.28 <a href="/wiki/Foot_(length)" class="mw-redirect" title="Foot (length)">feet</a></li> <li>1.1 <a href="/wiki/Yard" title="Yard">yards</a></li> <li>side of <a href="/wiki/Square_(geometry)" class="mw-redirect" title="Square (geometry)">square</a> with area <a href="/wiki/1_E0_m%C2%B2" class="mw-redirect" title="1 E0 m²">1 m2</a></li> <li>edge of <a href="/wiki/Cube_(geometry)" class="mw-redirect" title="Cube (geometry)">cube</a> with surface area <a href="/wiki/1_E0_m%C2%B2" class="mw-redirect" title="1 E0 m²">6 m2</a> and volume <a href="/wiki/1_E0_m%C2%B3" class="mw-redirect" title="1 E0 m³">1 m3</a></li> <li>radius of <a href="/wiki/Circle" title="Circle">circle</a> with area <a href="/wiki/1_E0_m%C2%B2" class="mw-redirect" title="1 E0 m²">π m2</a></li> <li>radius of <a href="/wiki/Sphere" title="Sphere">sphere</a> with surface area <a href="/wiki/1_E%2B1_m%C2%B2" class="mw-redirect" title="1 E+1 m²">4π m2</a> and volume <a href="/wiki/1_E0_m%C2%B3" class="mw-redirect" title="1 E0 m³">4/3π m3</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Human-defined_scales_and_structures_2">Human-defined scales and structures</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=40" title="Edit section: Human-defined scales and structures">edit</a>]</div> <ul><li>1 m – approximate height of the top part of a doorknob on a door</li> <li>1 m – diameter of a very large <a href="/wiki/Beach_ball" title="Beach ball">beach ball</a></li> <li>1.29 m – length of the <a href="/wiki/Cross_Island_Chapel" title="Cross Island Chapel">Cross Island Chapel</a>, the smallest church in the world</li> <li>1.4 m – length of a <a href="/wiki/Peel_P50" title="Peel P50">Peel P50</a>, the world's smallest car</li> <li>1.435 m – standard gauge of railway track used by about 60% of railways in the world = 4 ft 8<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">1⁄2 in</li> <li>2.5 m – distance from the floor to the ceiling in an average residential house<a href="#cite_note-123">[119]</a></li> <li>2.7 m – length of the <a href="/wiki/Starr_Bumble_Bee_II" title="Starr Bumble Bee II">Starr Bumble Bee II</a>, the smallest plane</li> <li>2.77–3.44 m – wavelength of the broadcast radio FM band 87–108 MHz</li> <li>3.05 m – the length of an old <a href="/wiki/Mini" title="Mini">Mini</a></li> <li>8 m – length of the <a href="/wiki/Tsar_Bomba" title="Tsar Bomba">Tsar Bomba</a>, the largest bomb ever detonated</li> <li>8.38 m – the length of a London Bus (<a href="/wiki/AEC_Routemaster" title="AEC Routemaster">AEC Routemaster</a>)</li></ul> <div class="mw-heading mw-heading3"><h3 id="Sports">Sports</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=41" title="Edit section: Sports">edit</a>]</div> <ul><li>2.44 m – height of an association football goal<a href="#cite_note-fifa-124">[120]</a></li> <li>2.45 m – highest high jump by a human (Javier Sotomayor)<a href="#cite_note-125">[121]</a></li> <li>3.05 m – (10 feet) height of the basket in basketball</li> <li>8.95 m – longest long jump by a human (Mike Powell)<a href="#cite_note-126">[122]</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Nature_2">Nature</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=42" title="Edit section: Nature">edit</a>]</div> <ul><li>1 m – length of <a href="/wiki/Rafflesia_arnoldii" title="Rafflesia arnoldii">Rafflesia arnoldii</a>, the largest flower in the world</li> <li>1 m – height of <a href="/wiki/Homo_floresiensis" title="Homo floresiensis">Homo floresiensis</a> (the "Hobbit")</li> <li>1.15 m – a <a href="/wiki/Pizote" class="mw-redirect" title="Pizote">pizote</a> (mammal)</li> <li>1.5 m – height of an <a href="/wiki/Okapi" title="Okapi">okapi</a></li> <li>1.63 m – (5 feet 4 inches) (or 64 inches) – height of average U.S. female human as of 2002<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">[update]</a> (source: U.S. Centers for Disease Control and Prevention (CDC))</li> <li>1.75 m – (5 feet 8 inches) – height of average U.S. male human as of 2002<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">[update]</a> (source: U.S. CDC as per female above)</li> <li>2.4 m – wingspan of a <a href="/wiki/Mute_swan" title="Mute swan">mute swan</a></li> <li>2.5 m – height of a <a href="/wiki/Sunflower" class="mw-redirect" title="Sunflower">sunflower</a></li> <li>2.7 m – length of a <a href="/wiki/Leatherback_sea_turtle" title="Leatherback sea turtle">leatherback sea turtle</a>, the largest living turtle</li> <li>2.72 m – (8 feet 11 inches) – tallest-known human (Robert Wadlow)<a href="#cite_note-Guinness-32">[31]</a></li> <li>3 m – length of a <a href="/wiki/Giant_Gippsland_earthworm" title="Giant Gippsland earthworm">giant Gippsland earthworm</a></li> <li>3.63 m – the record wingspan for living birds (a <a href="/wiki/Wandering_albatross" class="mw-redirect" title="Wandering albatross">wandering albatross</a>)</li> <li>3.7 m – leg span of a <a href="/wiki/Japanese_spider_crab" title="Japanese spider crab">Japanese spider crab</a></li> <li>3.7 m – length of a <a href="/wiki/Southern_elephant_seal" title="Southern elephant seal">southern elephant seal</a>, the largest living pinniped</li> <li>5 m – length of an <a href="/wiki/Elephant" title="Elephant">elephant</a></li> <li>5.2 m – height of a <a href="/wiki/Giraffe" title="Giraffe">giraffe</a><a href="#cite_note-Dagg1971-127">[123]</a></li> <li>5.5 m – height of a <a href="/wiki/Baluchitherium" class="mw-redirect" title="Baluchitherium">Baluchitherium</a>, the largest land mammal ever lived</li> <li>6.5 m – wingspan of <a href="/wiki/Argentavis" title="Argentavis">Argentavis</a>, the largest flying bird known</li> <li>6.7 m – length of a <a href="/wiki/Microchaetus_rappi" title="Microchaetus rappi">Microchaetus rappi</a></li> <li>7.4 m – wingspan of <a href="/wiki/Pelagornis" title="Pelagornis">Pelagornis</a>, the bird with longest wingspan ever.<a href="#cite_note-128">[124]</a></li> <li>7.5 m – approximate length of the human gastrointestinal tract</li></ul> <div class="mw-heading mw-heading3"><h3 id="Astronomical_2">Astronomical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=43" title="Edit section: Astronomical">edit</a>]</div> <ul><li>3–6 m – approximate diameter of <a href="/w/index.php?title=2003_SQ222&action=edit&redlink=1" class="new" title="2003 SQ222 (page does not exist)">2003 SQ222</a>, a meteoroid</li> <li>4.1 m – diameter of <a href="/wiki/2008_TC3" title="2008 TC3">2008 TC3</a>, a small asteroid that flew into the Earth's atmosphere on 7 October 2008<a href="#cite_note-discovermagazine-129">[125]</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="1_decametre">1 decametre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=44" title="Edit section: 1 decametre">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Image-Blue_Whale_and_Hector_Dolphine_Colored.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Image-Blue_Whale_and_Hector_Dolphine_Colored.jpg/220px-Image-Blue_Whale_and_Hector_Dolphine_Colored.jpg" decoding="async" width="220" height="80" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/14/Image-Blue_Whale_and_Hector_Dolphine_Colored.jpg/330px-Image-Blue_Whale_and_Hector_Dolphine_Colored.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/14/Image-Blue_Whale_and_Hector_Dolphine_Colored.jpg/440px-Image-Blue_Whale_and_Hector_Dolphine_Colored.jpg 2x" data-file-width="900" data-file-height="326" /></a><figcaption>A <a href="/wiki/Blue_whale" title="Blue whale">blue whale</a> has been measured as 33 m (108 ft) long; this drawing compares its length to that of a human diver and a dolphin.</figcaption></figure> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509"><a href="/wiki/Decametre" title="Decametre">decametre</a> (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">dam) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 10 <a href="/wiki/Metre" title="Metre">metres</a> (101 m). To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists lengths between 10 and 100 metres. <div class="mw-heading mw-heading3"><h3 id="Conversions_3">Conversions</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=45" title="Edit section: Conversions">edit</a>]</div> 10 metres (very rarely termed a <a href="/wiki/Decametre" title="Decametre">decametre</a> which is abbreviated as dam) is equal to: <ul><li>10 metres</li> <li>100 <a href="/wiki/Decimetre" title="Decimetre">decimetres</a></li> <li>1,000 <a href="/wiki/Centimetre" title="Centimetre">centimetres</a></li> <li>10,000 <a href="/wiki/Millimetre" title="Millimetre">millimetres</a></li> <li>10,000,000 <a href="/wiki/Micrometre" title="Micrometre">micrometres</a> (or rarely 10,000,000 microns)</li> <li>32.8 <a href="/wiki/Foot_(length)" class="mw-redirect" title="Foot (length)">feet</a></li> <li>11 <a href="/wiki/Yards" class="mw-redirect" title="Yards">yards</a></li> <li>side of a <a href="/wiki/Square_(geometry)" class="mw-redirect" title="Square (geometry)">square</a> with area <a href="/wiki/1_E%2B2_m%C2%B2" class="mw-redirect" title="1 E+2 m²">100 m²</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Human-defined_scales_and_structures_3">Human-defined scales and structures</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=46" title="Edit section: Human-defined scales and structures">edit</a>]</div> <ul><li>10 metres – wavelength of the highest shortwave radio frequency, <a href="/wiki/1_E7_Hz" class="mw-redirect" title="1 E7 Hz">30</a> M<a href="/wiki/Hertz" title="Hertz">Hz</a></li> <li>10.2 metres – length of the <a href="/wiki/Panzer_VIII_Maus" title="Panzer VIII Maus">Panzer VIII Maus</a>, the world's largest tank</li> <li>12 metres – height of the <a href="/wiki/Newby-McMahon_Building" class="mw-redirect" title="Newby-McMahon Building">Newby-McMahon Building</a>, the world's littlest skyscraper</li> <li>23 metres – height of <a href="/wiki/Luxor_Obelisk" class="mw-redirect" title="Luxor Obelisk">Luxor Obelisk</a>, located in the Place de la Concorde, Paris, France</li> <li>25 metres – wavelength of the broadcast radio shortwave band at <a href="/wiki/1_E7_Hz" class="mw-redirect" title="1 E7 Hz">12</a> MHz</li> <li>29 metres – height of the <a href="/wiki/Savudrija_Lighthouse" title="Savudrija Lighthouse">Savudrija Lighthouse</a></li> <li>30 metres – height of <a href="/wiki/Christ_the_Redeemer_(statue)" title="Christ the Redeemer (statue)">Christ the Redeemer</a></li> <li>31 metres – wavelength of the broadcast radio shortwave band at 9.7 MHz</li> <li>32 metres – length of one <a href="/wiki/Minute_and_second_of_arc" title="Minute and second of arc">arcsecond</a> of <a href="/wiki/Latitude" title="Latitude">latitude</a> on the surface of the <a href="/wiki/Earth" title="Earth">Earth</a></li> <li>33.3 metres – height of the <a href="/wiki/De_Noord" title="De Noord">De Noord</a>, the tallest windmill in the world</li> <li>34 metres – height of the <a href="/wiki/Split_Point_Lighthouse" title="Split Point Lighthouse">Split Point Lighthouse</a> in Aireys Inlet, Victoria, Australia</li> <li>40 metres – wingspan of the <a href="/wiki/Mil_Mi-26" title="Mil Mi-26">Mil Mi-26</a>, the largest helicopter</li> <li>40 metres – average depth beneath the seabed of the <a href="/wiki/Channel_tunnel" class="mw-redirect" title="Channel tunnel">Channel tunnel</a></li> <li>49 metres – wavelength of the broadcast radio shortwave band at 6.1 MHz</li> <li>50 metres – length of a <a href="/wiki/Road_train" title="Road train">road train</a></li> <li>50 metres – height of the <a href="/wiki/Arc_de_Triomphe" title="Arc de Triomphe">Arc de Triomphe</a></li> <li>55 metres – height of the <a href="/wiki/Leaning_Tower_of_Pisa" title="Leaning Tower of Pisa">Leaning Tower of Pisa</a></li> <li>62 metres – wingspan of <a href="/wiki/Concorde" title="Concorde">Concorde</a></li> <li>62.5 metres – height of <a href="/wiki/Pyramid_of_Djoser" title="Pyramid of Djoser">Pyramid of Djoser</a></li> <li>64 metres – wingspan of a <a href="/wiki/Boeing_747-400" title="Boeing 747-400">Boeing 747-400</a></li> <li>69 metres – wingspan of an <a href="/wiki/Antonov_An-124_Ruslan" title="Antonov An-124 Ruslan">Antonov An-124 Ruslan</a></li> <li>70 metres – length of the <a href="/wiki/Bayeux_Tapestry" title="Bayeux Tapestry">Bayeux Tapestry</a></li> <li>70 metres – width of a typical <a href="/wiki/Association_football_field" class="mw-redirect" title="Association football field">association football field</a></li> <li>73 metres – wingspan of a <a href="/wiki/Airbus_A380" title="Airbus A380">Airbus A380</a></li> <li>73 metres – height of the <a href="/wiki/Taj_Mahal" title="Taj Mahal">Taj Mahal</a></li> <li>77 metres – wingspan of a <a href="/wiki/Boeing_747-8" title="Boeing 747-8">Boeing 747-8</a></li> <li>88.4 metres – wingspan of an <a href="/wiki/Antonov_An-225_Mriya" title="Antonov An-225 Mriya">Antonov An-225 Mriya</a> transport aircraft</li> <li>93 metres – height of the <a href="/wiki/Statue_of_Liberty" title="Statue of Liberty">Statue of Liberty</a> (Liberty Enlightening the World)</li> <li>96 metres – height of <a href="/wiki/Big_Ben" title="Big Ben">Big Ben</a></li> <li>100 metres – wavelength of the lowest shortwave radio frequency, <a href="/wiki/1_E6_Hz" class="mw-redirect" title="1 E6 Hz">3</a> MHz</li></ul> <div class="mw-heading mw-heading3"><h3 id="Sports_2">Sports</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=47" title="Edit section: Sports">edit</a>]</div> <ul><li>11 metres – approximate width of a doubles tennis court</li> <li>15 metres – width of a standard FIBA basketball court</li> <li>15.24 metres – width of an NBA basketball court (50 feet)</li> <li>18.44 metres – distance between the front of the pitcher's rubber and the rear point of home plate on a baseball field (60 feet, 6 inches)<a href="#cite_note-130">[126]</a></li> <li>20 metres – length of cricket pitch (22 yards)<a href="#cite_note-131">[127]</a></li> <li>27.43 metres – distance between bases on a baseball field (90 feet)</li> <li>28 metres – length of a standard FIBA basketball court</li> <li>28.65 metres – length of an NBA basketball court (94 feet)</li> <li>49 metres – width of an American football field (53<link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1154941027">1⁄3 yards)</li> <li>59.436 metres – width of a Canadian football field (65 yards)</li> <li>70 metres – typical width of an association football field</li> <li>91 metres – length of an American football field (100 yards, measured between the goal lines)</li></ul> <div class="mw-heading mw-heading3"><h3 id="Nature_3">Nature</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=48" title="Edit section: Nature">edit</a>]</div> <ul><li>10 metres – average length of human digestive tract[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>12 metres – height of a <a href="/wiki/Saguaro_cactus" class="mw-redirect" title="Saguaro cactus">saguaro cactus</a></li> <li>12 metres – length of a <a href="/wiki/Whale_shark" title="Whale shark">whale shark</a>, largest living fish</li> <li>12 metres – wingspan of a <a href="/wiki/Quetzalcoatlus" title="Quetzalcoatlus">Quetzalcoatlus</a>, a pterosaur</li> <li>12.8 metres – length of a <a href="/wiki/Titanoboa" title="Titanoboa">Titanoboa</a>, the largest snake to have ever lived</li> <li>13 metres – length of a <a href="/wiki/Giant_squid" title="Giant squid">giant squid</a> and <a href="/wiki/Colossal_squid" title="Colossal squid">colossal squid</a>, the largest living invertebrates</li> <li>15 metres – approximate distance the tropical circles of latitude are moving towards the equator and the polar circles are moving towards the poles each year due to a natural, gradual decrease in the Earth's axial tilt</li> <li>16 metres – length of a <a href="/wiki/Sperm_whale" title="Sperm whale">sperm whale</a>, the largest toothed whale</li> <li>18 metres – height of a <a href="/wiki/Sauroposeidon" title="Sauroposeidon">Sauroposeidon</a>, the tallest-known dinosaur</li> <li>20 metres – length of a <a href="/wiki/Leedsichthys" title="Leedsichthys">Leedsichthys</a>, the largest-known fish to have lived</li> <li>21 metres – height of <a href="/wiki/High_Force" title="High Force">High Force</a> waterfall in England</li> <li>30.5 metres – length of the <a href="/wiki/Lion%27s_mane_jellyfish" title="Lion's mane jellyfish">lion's mane jellyfish</a>, the largest jellyfish in the world</li> <li>33 metres – length of a <a href="/wiki/Blue_whale" title="Blue whale">blue whale</a>,<a href="#cite_note-132">[128]</a> the largest animal on earth, living or extinct, in terms of mass</li> <li>39 metres – length of a <a href="/wiki/Supersaurus" title="Supersaurus">Supersaurus</a>, the longest-known dinosaur and longest vertebrate<a href="#cite_note-133">[129]</a></li> <li>52 metres – height of <a href="/wiki/Niagara_Falls" title="Niagara Falls">Niagara Falls</a><a href="#cite_note-Niagara_Parks_Commission-34">[33]</a></li> <li>55 metres – length of a <a href="/wiki/Bootlace_worm" class="mw-redirect" title="Bootlace worm">bootlace worm</a>, the longest-known animal<a href="#cite_note-134">[130]</a></li> <li>66 metres – highest possible sea level rise due to a complete melting of all ice on Earth</li> <li>83 metres – height of a <a href="/wiki/Western_hemlock" class="mw-redirect" title="Western hemlock">western hemlock</a></li> <li>84 metres – height of <a href="/wiki/General_Sherman_(tree)" title="General Sherman (tree)">General Sherman</a>, the largest tree in the world</li></ul> <div class="mw-heading mw-heading3"><h3 id="Astronomical_3">Astronomical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=49" title="Edit section: Astronomical">edit</a>]</div> <ul><li>30 metres – diameter of <a href="/wiki/1998_KY26" title="1998 KY26">1998 KY26</a>, a rapidly spinning meteoroid</li> <li>30.8568 metres – 1 femtoparsec</li> <li>32 metres – approximate diameter of <a href="/wiki/2008_HJ" title="2008 HJ">2008 HJ</a>, a small meteoroid</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_hectometre">1 hectometre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=50" title="Edit section: 1 hectometre">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Cheops_pyramid_01.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Cheops_pyramid_01.jpg/220px-Cheops_pyramid_01.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Cheops_pyramid_01.jpg/330px-Cheops_pyramid_01.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Cheops_pyramid_01.jpg/440px-Cheops_pyramid_01.jpg 2x" data-file-width="667" data-file-height="500" /></a><figcaption>The Great Pyramid of Giza is 138.8 m (455 ft) high.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:M27_DLS.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/0d/M27_DLS.JPG/170px-M27_DLS.JPG" decoding="async" width="170" height="227" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/0d/M27_DLS.JPG/255px-M27_DLS.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/0d/M27_DLS.JPG/340px-M27_DLS.JPG 2x" data-file-width="1944" data-file-height="2592" /></a><figcaption>British <a href="/wiki/Driver_location_signs" class="mw-redirect" title="Driver location signs">driver location sign</a> and location marker post on the <a href="/wiki/M27_motorway" title="M27 motorway">M27</a> in <a href="/wiki/Hampshire" title="Hampshire">Hampshire</a>. The location marker posts are installed at 100-metre intervals.<a href="#cite_note-faq-135">[131]</a></figcaption></figure> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509"><a href="/wiki/Hectometre" title="Hectometre">hectometre</a> (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">hm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 100 <a href="/wiki/Metre" title="Metre">metres</a> (102 m). To compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a> this section lists lengths between 100 metres and 1,000 metres (1 <a href="/wiki/Kilometre" title="Kilometre">kilometre</a>). <div class="mw-heading mw-heading3"><h3 id="Conversions_4">Conversions</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=51" title="Edit section: Conversions">edit</a>]</div> 100 metres (sometimes termed a hectometre) is equal to: <ul><li>328 <a href="/wiki/Foot_(length)" class="mw-redirect" title="Foot (length)">feet</a></li> <li>one side of a <a href="/wiki/1_E%2B4_m%C2%B2" class="mw-redirect" title="1 E+4 m²">1 hectare</a> square</li> <li>a fifth of a modern <a href="/wiki/Li_(Chinese_unit)" class="mw-redirect" title="Li (Chinese unit)">li</a>, a Chinese unit of measurement</li> <li>the approximate distance travelled by light in 300 <a href="/wiki/Nanosecond" title="Nanosecond">nanoseconds</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Human-defined_scales_and_structures_4">Human-defined scales and structures</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=52" title="Edit section: Human-defined scales and structures">edit</a>]</div> <ul><li>100 metres – wavelength of the highest medium wave radio frequency, <a href="/wiki/1_E6_Hz" class="mw-redirect" title="1 E6 Hz">3 MHz</a></li> <li>100 metres – spacing of location marker posts on British motorways</li> <li>110 metres – height of the <a href="/wiki/Saturn_V" title="Saturn V">Saturn V</a></li> <li>138.8 metres – height of the <a href="/wiki/Great_Pyramid_of_Giza" title="Great Pyramid of Giza">Great Pyramid of Giza</a> (Pyramid of Cheops)</li> <li>139 metres – height of the world's tallest roller coaster, <a href="/wiki/Kingda_Ka" title="Kingda Ka">Kingda Ka</a><a href="#cite_note-136">[132]</a></li> <li>157 metres – height of the <a href="/wiki/Cologne_Cathedral" title="Cologne Cathedral">Cologne Cathedral</a></li> <li>162 metres – height of the <a href="/wiki/Ulm_Minster" title="Ulm Minster">Ulm Minster</a>, the tallest church building in the world</li> <li>165 metres – height of the <a href="/wiki/Dushanbe_Flagpole" title="Dushanbe Flagpole">Dushanbe Flagpole</a>, the tallest flagpole from May 2011 to September 2014</li> <li>169 metres – height of the <a href="/wiki/Washington_Monument" title="Washington Monument">Washington Monument</a></li> <li>171 metres – height of the <a href="/wiki/Jeddah_Flagpole" title="Jeddah Flagpole">Jeddah Flagpole</a>, the tallest flagpole from September 2014 to December 2021</li> <li>182 metres – height of the <a href="/wiki/Statue_of_Unity" title="Statue of Unity">Statue of Unity</a>, the world's tallest statue</li> <li>187 metres – shortest wavelength of the broadcast radio AM band, <a href="/wiki/1_E6_Hz" class="mw-redirect" title="1 E6 Hz">1600 kHz</a></li> <li>192 metres – height of the <a href="/wiki/Gateway_Arch" title="Gateway Arch">Gateway Arch</a></li> <li>202 metres – height of the <a href="/wiki/Cairo_Flagpole" title="Cairo Flagpole">Cairo Flagpole</a>, the tallest flagpole as of December 2021</li> <li>202 metres – length of the <a href="/wiki/Sz%C3%A9chenyi_Chain_Bridge" title="Széchenyi Chain Bridge">Széchenyi Chain Bridge</a> connecting Buda and Pest</li> <li>220 metres – height of the <a href="/wiki/Hoover_Dam" title="Hoover Dam">Hoover Dam</a></li> <li>245 metres – length of the <a href="/wiki/LZ_129_Hindenburg" title="LZ 129 Hindenburg">LZ 129 Hindenburg</a></li> <li>270 metres – length of the <a href="/wiki/Titanic" title="Titanic">Titanic</a></li> <li>318 metres – height of The <a href="/wiki/New_York_Times_Building" class="mw-redirect" title="New York Times Building">New York Times Building</a></li> <li>318.9 metres – height of the <a href="/wiki/Chrysler_Building" title="Chrysler Building">Chrysler Building</a></li> <li>328 metres – height of Auckland's <a href="/wiki/Sky_Tower_(Auckland)" title="Sky Tower (Auckland)">Sky Tower</a>, the tallest free-standing structure in the Southern Hemisphere (1996–2022)</li> <li>330 metres – height of the <a href="/wiki/Eiffel_Tower" title="Eiffel Tower">Eiffel Tower</a> (including antenna)<a href="#cite_note-137">[133]</a></li> <li>336 metres – height of the world's tallest bridge as of October 2023, the <a href="/wiki/Millau_Viaduct" title="Millau Viaduct">Millau Viaduct</a></li> <li>364.75 metres – length of the <a href="/wiki/Icon_of_the_Seas" title="Icon of the Seas">Icon of the Seas</a></li> <li>390 metres – height of the <a href="/wiki/Empire_State_Building" title="Empire State Building">Empire State Building</a></li> <li>400–800 metres – approximate heights of the world's tallest skyscrapers from 1931 to 2010</li> <li>458 metres – length of the <a href="/wiki/Knock_Nevis" class="mw-redirect" title="Knock Nevis">Knock Nevis</a>, the world's largest supertanker</li> <li>553.33 metres – height of the <a href="/wiki/CN_Tower" title="CN Tower">CN Tower</a><a href="#cite_note-138">[134]</a></li> <li>555 metres – longest wavelength of the broadcast radio AM band, <a href="/wiki/1_E5_Hz" class="mw-redirect" title="1 E5 Hz">540 kHz</a></li> <li>630 metres – height of the <a href="/wiki/KVLY-TV_mast" title="KVLY-TV mast">KVLY-TV mast</a>, second-tallest structure in the world</li> <li>646 metres – height of the <a href="/wiki/Warsaw_radio_mast" title="Warsaw radio mast">Warsaw radio mast</a>, the world's tallest structure until its collapse in 1991</li> <li>828 metres – height of <a href="/wiki/Burj_Khalifa" title="Burj Khalifa">Burj Khalifa</a>, world's tallest structure on 17 January 2009<a href="#cite_note-139">[135]</a></li> <li>1,000 metres – wavelength of the lowest mediumwave radio frequency, <a href="/wiki/1_E5_Hz" class="mw-redirect" title="1 E5 Hz">300 kHz</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Sports_3">Sports</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=53" title="Edit section: Sports">edit</a>]</div> <ul><li>100 metres – the distance a very fast human can run in about 10 seconds</li> <li>100.584 metres – length of a Canadian football field between the goal lines (110 <a href="/wiki/Yard" title="Yard">yards</a>)</li> <li>91.5 metres – 137 metres – length of a soccer field<a href="#cite_note-fifa-124">[120]</a></li> <li>105 metres – length of football pitch (UEFA stadium categories 3 and 4)</li> <li>105 metres – length of a typical football field</li> <li>109.73 metres – total length of an American football field (120 yards, including the end zones)</li> <li>110–150 metres – the width of an Australian football field</li> <li>135–185 metres – the length of an Australian football field</li> <li>137.16 metres – total length of a Canadian football field, including the end zones (150 yards)</li></ul> <div class="mw-heading mw-heading3"><h3 id="Nature_4">Nature</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=54" title="Edit section: Nature">edit</a>]</div> <ul><li>115.5 metres – height of the world's tallest tree in 2007, the <a href="/wiki/Hyperion_(tree)" title="Hyperion (tree)">Hyperion</a> sequoia<a href="#cite_note-140">[136]</a></li> <li>310 metres – maximum depth of <a href="/wiki/Lake_Geneva" title="Lake Geneva">Lake Geneva</a></li> <li>340 metres – distance sound travels in air at sea level in one second; see <a href="/wiki/Speed_of_sound" title="Speed of sound">Speed of sound</a></li> <li>947 metres – height of the <a href="/wiki/Tugela_Falls" title="Tugela Falls">Tugela Falls</a>, the highest waterfall in Africa</li> <li>979 metres – height of the <a href="/wiki/Angel_Falls" title="Angel Falls">Angel Falls</a>, the world's highest free-falling waterfall (Venezuela)</li></ul> <div class="mw-heading mw-heading3"><h3 id="Astronomical_4">Astronomical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=55" title="Edit section: Astronomical">edit</a>]</div> <ul><li>270 metres – length of <a href="/wiki/99942_Apophis" title="99942 Apophis">99942 Apophis</a></li> <li>535 metres – length of <a href="/wiki/25143_Itokawa" title="25143 Itokawa">25143 Itokawa</a>,<a href="#cite_note-141">[137]</a> a small asteroid visited by a spacecraft</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_kilometre">1 kilometre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=56" title="Edit section: 1 kilometre">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Fuji_Kawaguchi_357.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Fuji_Kawaguchi_357.JPG/220px-Fuji_Kawaguchi_357.JPG" decoding="async" width="220" height="147" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Fuji_Kawaguchi_357.JPG/330px-Fuji_Kawaguchi_357.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/c/cd/Fuji_Kawaguchi_357.JPG/440px-Fuji_Kawaguchi_357.JPG 2x" data-file-width="4320" data-file-height="2880" /></a><figcaption><a href="/wiki/Mount_Fuji" title="Mount Fuji">Mount Fuji</a> is 3.776 kilometres (2.346 mi) high.</figcaption></figure> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509"><a href="/wiki/Kilometre" title="Kilometre">kilometre</a> (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">km) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 1000 <a href="/wiki/Metre" title="Metre">metres</a> (103 m). To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 1 kilometre and 10 <a href="/wiki/Kilometre" title="Kilometre">kilometres</a> (103 and 104 <a href="/wiki/Metre" title="Metre">metres</a>). <div class="mw-heading mw-heading3"><h3 id="Conversions_5">Conversions</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=57" title="Edit section: Conversions">edit</a>]</div> 1 <a href="/wiki/Kilometre" title="Kilometre">kilometre</a> (unit symbol km) is equal to: <ul><li>1,000 <a href="/wiki/Metre" title="Metre">metres</a></li> <li>0.621371 <a href="/wiki/Mile" title="Mile">miles</a></li> <li>1,093.61 <a href="/wiki/Yard" title="Yard">yards</a></li> <li>3,280.84 <a href="/wiki/Foot_(length)" class="mw-redirect" title="Foot (length)">feet</a></li> <li>39,370.1 <a href="/wiki/Inch" title="Inch">inches</a></li> <li>100,000 <a href="/wiki/Centimetre" title="Centimetre">centimetres</a></li> <li>1,000,000 <a href="/wiki/Millimetre" title="Millimetre">millimetres</a></li> <li>Side of a <a href="/wiki/Square_(geometry)" class="mw-redirect" title="Square (geometry)">square</a> of area <a href="/wiki/1_E%2B6_m%C2%B2" class="mw-redirect" title="1 E+6 m²">1</a> <a href="/wiki/Km%C2%B2" class="mw-redirect" title="Km²">km2</a></li> <li>Radius of a <a href="/wiki/Circle" title="Circle">circle</a> of area <a href="/wiki/Pi" title="Pi">π</a> km2</li></ul> <div class="mw-heading mw-heading3"><h3 id="Human-defined_scales_and_structures_5">Human-defined scales and structures</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=58" title="Edit section: Human-defined scales and structures">edit</a>]</div> <ul><li>1 km – wavelength of the highest <a href="/wiki/Long_wave" class="mw-redirect" title="Long wave">long wave</a> radio frequency, <a href="/wiki/1_E5_Hz" class="mw-redirect" title="1 E5 Hz">300</a> <a href="/wiki/KHz" class="mw-redirect" title="KHz">kHz</a><a href="#cite_note-142">[138]</a></li> <li>4 km – width of <a href="/wiki/Central_Park" title="Central Park">Central Park</a></li> <li>1.280 km – span of the <a href="/wiki/Golden_Gate_Bridge" title="Golden Gate Bridge">Golden Gate Bridge</a> (distance between towers)<a href="#cite_note-143">[139]</a></li> <li>1.609 km – 1 statute mile</li> <li>1.852 km – 1 <a href="/wiki/Nautical_mile" title="Nautical mile">nautical mile</a>, equal to 1 <a href="/wiki/Arcminute" class="mw-redirect" title="Arcminute">arcminute</a> of <a href="/wiki/Latitude" title="Latitude">latitude</a> at the surface of the Earth<a href="#cite_note-144">[140]</a></li> <li>1.991 km – span of the <a href="/wiki/Akashi_Kaiky%C5%8D_Bridge" class="mw-redirect" title="Akashi Kaikyō Bridge">Akashi Kaikyō Bridge</a><a href="#cite_note-145">[141]</a></li> <li>2.309 km – axial length of the <a href="/wiki/Three_Gorges_Dam" title="Three Gorges Dam">Three Gorges Dam</a>, the largest <a href="/wiki/Dam" title="Dam">dam</a> in the world<a href="#cite_note-Three_Gorges_Dam-35">[34]</a></li> <li>3.991 km – length of the <a href="/wiki/Akashi_Kaiky%C5%8D_Bridge" class="mw-redirect" title="Akashi Kaikyō Bridge">Akashi Kaikyō Bridge</a>, longest <a href="/wiki/Suspension_bridge" title="Suspension bridge">suspension bridge</a> in the world as of December 2008<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">[update]</a><a href="#cite_note-146">[142]</a></li> <li>5.072 km – elevation of <a href="/wiki/Tanggula_Mountain_Pass" class="mw-redirect" title="Tanggula Mountain Pass">Tanggula Mountain Pass</a>, below highest peak in the <a href="/wiki/Tanggula_Mountains" title="Tanggula Mountains">Tanggula Mountains</a>, highest <a href="/wiki/Railway" class="mw-redirect" title="Railway">railway</a> pass in the world as of August 2005<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">[update]</a><a href="#cite_note-147">[143]</a></li> <li>5.8 km – elevation of Cerro Aucanquilcha, highest road in the world, located in <a href="/wiki/Chile" title="Chile">Chile</a><a href="#cite_note-148">[144]</a></li> <li><a href="/wiki/List_of_longest_runways" title="List of longest runways">98 airports</a> have paved runways from 4 km to 5.5 km in length.</li> <li>8 km – length of <a href="/wiki/Palm_Jebel_Ali" title="Palm Jebel Ali">Palm Jebel Ali</a>, an <a href="/wiki/Artificial_island" title="Artificial island">artificial island</a> built off the coast of <a href="/wiki/Dubai" title="Dubai">Dubai</a></li> <li>9.8 km – length of <a href="/wiki/The_World_(archipelago)" title="The World (archipelago)">The World</a>, an artificial archipelago that is also built off the coast of <a href="/wiki/Dubai" title="Dubai">Dubai</a>, whose islands resemble a <a href="/wiki/World_map" title="World map">world map</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Nature_5">Nature</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=59" title="Edit section: Nature">edit</a>]</div> <ul><li>1.5 km – distance sound travels in water in one second</li></ul> <div class="mw-heading mw-heading3"><h3 id="Geographical">Geographical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=60" title="Edit section: Geographical">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444"><table class="box-More_citations_needed_section plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></div></td><td class="mbox-text"><div class="mbox-text-span">This section needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a>. Please help <a href="/wiki/Special:EditPage/Orders_of_magnitude_(length)" title="Special:EditPage/Orders of magnitude (length)">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a> in this section. Unsourced material may be challenged and removed. (March 2011) (<a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a>)</div></td></tr></tbody></table> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236090951"><div role="note" class="hatnote navigation-not-searchable">See also: <a href="/wiki/List_of_highest_mountains_on_Earth" title="List of highest mountains on Earth">List of highest mountains on Earth</a></div> <ul><li>1.637 km – deepest dive of <a href="/wiki/Lake_Baikal" title="Lake Baikal">Lake Baikal</a> in <a href="/wiki/Russia" title="Russia">Russia</a>, the world's largest <a href="/wiki/Freshwater" class="mw-redirect" title="Freshwater">freshwater</a> <a href="/wiki/Lake" title="Lake">lake</a><a href="#cite_note-149">[145]</a></li> <li>2.228 km – height of <a href="/wiki/Mount_Kosciuszko" title="Mount Kosciuszko">Mount Kosciuszko</a>, highest point on mainland <a href="/wiki/Geography_of_Australia" title="Geography of Australia">Australia</a><a href="#cite_note-150">[146]</a></li> <li>Most of <a href="/wiki/Manhattan" title="Manhattan">Manhattan</a> is from 3 to 4 km wide.</li> <li>3.776 km – height of <a href="/wiki/Mount_Fuji" title="Mount Fuji">Mount Fuji</a>, highest peak in <a href="/wiki/Japan" title="Japan">Japan</a></li> <li>4.478 km – height of <a href="/wiki/Matterhorn" title="Matterhorn">Matterhorn</a></li> <li>4.509 km – height of <a href="/wiki/Mount_Wilhelm" title="Mount Wilhelm">Mount Wilhelm</a>, highest peak in <a href="/wiki/Papua_New_Guinea" title="Papua New Guinea">Papua New Guinea</a></li> <li>4.810 km – height of <a href="/wiki/Mont_Blanc" title="Mont Blanc">Mont Blanc</a>, highest peak in the <a href="/wiki/Alps" title="Alps">Alps</a></li> <li>4.884 km – height of <a href="/wiki/Carstensz_Pyramid" class="mw-redirect" title="Carstensz Pyramid">Carstensz Pyramid</a>, highest peak in <a href="/wiki/Oceania" title="Oceania">Oceania</a><a href="#cite_note-151">[147]</a></li> <li>4.892 km – height of <a href="/wiki/Mount_Vinson" class="mw-redirect" title="Mount Vinson">Mount Vinson</a>, highest peak in <a href="/wiki/Antarctica" title="Antarctica">Antarctica</a></li> <li>5.610 km – height of <a href="/wiki/Mount_Damavand" title="Mount Damavand">Mount Damavand</a>, highest peak in <a href="/wiki/Iran" title="Iran">Iran</a></li> <li>5.642 km – height of <a href="/wiki/Mount_Elbrus" title="Mount Elbrus">Mount Elbrus</a>, highest peak in <a href="/wiki/Europe" title="Europe">Europe</a></li> <li>5.895 km – height of <a href="/wiki/Mount_Kilimanjaro" title="Mount Kilimanjaro">Mount Kilimanjaro</a>, highest peak in <a href="/wiki/Africa" title="Africa">Africa</a></li> <li>6.081 km – height of <a href="/wiki/Mount_Logan" title="Mount Logan">Mount Logan</a>, highest peak in <a href="/wiki/Canada" title="Canada">Canada</a></li> <li>6.190 km – height of <a href="/wiki/Denali" title="Denali">Denali</a>, highest peak in <a href="/wiki/North_America" title="North America">North America</a></li> <li>6.959 km – height of <a href="/wiki/Aconcagua" title="Aconcagua">Aconcagua</a>, highest peak in <a href="/wiki/South_America" title="South America">South America</a></li> <li>7.5 km – depth of <a href="/wiki/Cayman_Trench" class="mw-redirect" title="Cayman Trench">Cayman Trench</a>, deepest point in the <a href="/wiki/Caribbean_Sea" title="Caribbean Sea">Caribbean Sea</a></li> <li>8.611 km – height of <a href="/wiki/K2" title="K2">K2</a>, second highest mountain on <a href="/wiki/Earth" title="Earth">Earth</a></li> <li>8.848 km – height of <a href="/wiki/Mount_Everest" title="Mount Everest">Mount Everest</a>, highest peak on <a href="/wiki/Earth" title="Earth">Earth</a>, on the border between <a href="/wiki/Nepal" title="Nepal">Nepal</a> and <a href="/wiki/China" title="China">China</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Astronomical_5">Astronomical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=61" title="Edit section: Astronomical">edit</a>]</div> <ul><li>1 km – diameter of <a href="/wiki/1620_Geographos" title="1620 Geographos">1620 Geographos</a></li> <li>1 km – very approximate size of the smallest-known <a href="/wiki/Moons_of_Jupiter" title="Moons of Jupiter">moons of Jupiter</a></li> <li>1.4 km – diameter of <a href="/wiki/Dactyl_(asteroid)" class="mw-redirect" title="Dactyl (asteroid)">Dactyl</a>, the first confirmed <a href="/wiki/Asteroid_moon" class="mw-redirect" title="Asteroid moon">asteroid moon</a></li> <li>4.8 km – diameter of <a href="/wiki/5535_Annefrank" title="5535 Annefrank">5535 Annefrank</a>, an inner belt asteroid</li> <li>5 km – diameter of <a href="/wiki/3753_Cruithne" title="3753 Cruithne">3753 Cruithne</a></li> <li>5 km – length of <a href="/wiki/PSR_B1257%2B12" title="PSR B1257+12">PSR B1257+12</a></li> <li>8 km – diameter of <a href="/wiki/Themisto_(moon)" title="Themisto (moon)">Themisto</a>, one of <a href="/wiki/Jupiter" title="Jupiter">Jupiter</a>'s moons</li> <li>8 km – diameter of the <a href="/wiki/Vela_Pulsar" title="Vela Pulsar">Vela Pulsar</a></li> <li>8.6 km – diameter of <a href="/wiki/Callirrhoe_(moon)" title="Callirrhoe (moon)">Callirrhoe</a>, also known as Jupiter XVII</li> <li>9.737 km – length of <a href="/wiki/PSR_B1919%2B21" title="PSR B1919+21">PSR B1919+21</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="10_kilometres_(1_myriametre)">10 kilometres (1 myriametre)</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=62" title="Edit section: 10 kilometres (1 myriametre)">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Strait_of_Gibraltar_5.53940W_35.97279N.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Strait_of_Gibraltar_5.53940W_35.97279N.jpg/220px-Strait_of_Gibraltar_5.53940W_35.97279N.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Strait_of_Gibraltar_5.53940W_35.97279N.jpg/330px-Strait_of_Gibraltar_5.53940W_35.97279N.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Strait_of_Gibraltar_5.53940W_35.97279N.jpg/440px-Strait_of_Gibraltar_5.53940W_35.97279N.jpg 2x" data-file-width="1280" data-file-height="958" /></a><figcaption>The <a href="/wiki/Strait_of_Gibraltar" title="Strait of Gibraltar">Strait of Gibraltar</a> is 13 km (8.1 mi) wide.</figcaption></figure> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 10 and 100 <a href="/wiki/Kilometre" title="Kilometre">kilometres</a> (104 to 105 <a href="/wiki/Metre" title="Metre">metres</a>). The myriametre<a href="#cite_note-Appell_2009-152">[148]</a> (sometimes also spelled myriometre; 10,000 metres) is a deprecated unit name; the decimal metric prefix <a href="/wiki/Myria-" title="Myria-">myria-</a><a href="#cite_note-fr-103">[99]</a> (sometimes also written as <a href="/wiki/Myrio-" class="mw-redirect" title="Myrio-">myrio-</a><a href="#cite_note-Brewster_1830-153">[149]</a><a href="#cite_note-Brewster_1832-154">[150]</a><a href="#cite_note-Dingler_1823-155">[151]</a>) is obsolete<a href="#cite_note-Procès-Verbaux_1935-104">[100]</a><a href="#cite_note-Roberts_1975-105">[101]</a><a href="#cite_note-Judson_1976-106">[102]</a> and was not included among the <a href="/wiki/SI_prefixes" class="mw-redirect" title="SI prefixes">prefixes</a> when the <a href="/wiki/International_System_of_Units" title="International System of Units">International System of Units</a> was introduced in 1960. <div class="mw-heading mw-heading3"><h3 id="Conversions_6">Conversions</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=63" title="Edit section: Conversions">edit</a>]</div> 10 kilometres is equal to: <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Myriameterstein36R%C3%BCdesheimRhein.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/64/Myriameterstein36R%C3%BCdesheimRhein.JPG/220px-Myriameterstein36R%C3%BCdesheimRhein.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/64/Myriameterstein36R%C3%BCdesheimRhein.JPG/330px-Myriameterstein36R%C3%BCdesheimRhein.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/64/Myriameterstein36R%C3%BCdesheimRhein.JPG/440px-Myriameterstein36R%C3%BCdesheimRhein.JPG 2x" data-file-width="2272" data-file-height="1704" /></a><figcaption><a href="/wiki/Distance_marker" class="mw-redirect" title="Distance marker">Distance marker</a> on the <a href="/wiki/Rhine" title="Rhine">Rhine</a>: 36 (XXXVI) myriametres from <a href="/wiki/Basel" title="Basel">Basel</a>. The stated distance is 360 km (220 mi); the comma is the <a href="/wiki/Decimal_separator" title="Decimal separator">decimal separator</a> in <a href="/wiki/Germany" title="Germany">Germany</a>.</figcaption></figure> <ul><li>10,000 <a href="/wiki/Metre" title="Metre">metres</a></li> <li>About 6.2 <a href="/wiki/Mile" title="Mile">miles</a></li> <li>1 mil (the <a href="/wiki/Scandinavian_mile" title="Scandinavian mile">Scandinavian mile</a>), now standardized as 10 km: <ul><li>1 mil, the unit of measure commonly used in <a href="/wiki/Norway" title="Norway">Norway</a> and <a href="/wiki/Sweden" title="Sweden">Sweden</a><a href="#cite_note-Haugen-156">[152]</a> used to be 11,295 m in Norway and 10,688 m in Sweden.</li></ul></li> <li><a href="/wiki/Parasang" title="Parasang">farsang</a>, unit of measure commonly used in <a href="/wiki/Iran" title="Iran">Iran</a> and <a href="/wiki/Turkey" title="Turkey">Turkey</a><a href="#cite_note-157">[153]</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Sports_4">Sports</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=64" title="Edit section: Sports">edit</a>]</div> <ul><li>42.195 km – length of the <a href="/wiki/Marathon" title="Marathon">marathon</a><a href="#cite_note-158">[154]</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Human-defined_scales_and_structures_6">Human-defined scales and structures</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=65" title="Edit section: Human-defined scales and structures">edit</a>]</div> <ul><li>18 km – cruising altitude of <a href="/wiki/Concorde" title="Concorde">Concorde</a></li> <li>27 km – circumference of the <a href="/wiki/Large_Hadron_Collider" title="Large Hadron Collider">Large Hadron Collider</a>, as of May 2010<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">[update]</a> the largest and highest energy <a href="/wiki/Particle_accelerator" title="Particle accelerator">particle accelerator</a></li> <li>34.668 km – highest manned <a href="/wiki/Balloon" title="Balloon">balloon</a> flight (Malcolm D. Ross and Victor E. Prather on 4 May 1961)<a href="#cite_note-159">[155]</a></li> <li>38.422 km – length of the Second <a href="/wiki/Lake_Pontchartrain_Causeway" title="Lake Pontchartrain Causeway">Lake Pontchartrain Causeway</a> in <a href="/wiki/Louisiana" title="Louisiana">Louisiana</a>, US</li> <li>39 km – undersea portion of the <a href="/wiki/Channel_tunnel" class="mw-redirect" title="Channel tunnel">Channel tunnel</a></li> <li>53.9 km – length of the <a href="/wiki/Seikan_Tunnel" title="Seikan Tunnel">Seikan Tunnel</a>, as of October 2009<a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">[update]</a>, the longest rail tunnel in the world<a href="#cite_note-160">[156]</a></li> <li>77 km – rough total length of the <a href="/wiki/Panama_Canal" title="Panama Canal">Panama Canal</a><a href="#cite_note-161">[157]</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Geographical_2">Geographical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=66" title="Edit section: Geographical">edit</a>]</div> <ul><li>10 km – height of <a href="/wiki/Mauna_Kea" title="Mauna Kea">Mauna Kea</a> in <a href="/wiki/Hawaii" title="Hawaii">Hawaii</a>, measured from its base on the ocean floor</li> <li>11 km – deepest-known point of the ocean, <a href="/wiki/Challenger_Deep" title="Challenger Deep">Challenger Deep</a> in the <a href="/wiki/Mariana_Trench" title="Mariana Trench">Mariana Trench</a></li> <li>11 km – average height of the <a href="/wiki/Troposphere" title="Troposphere">troposphere</a></li> <li>14 km – width of the <a href="/wiki/Strait_of_Gibraltar" title="Strait of Gibraltar">Strait of Gibraltar</a></li> <li>21 km – length of <a href="/wiki/Manhattan" title="Manhattan">Manhattan</a></li> <li>22 km – narrowest width of the <a href="/wiki/Cook_Strait" title="Cook Strait">Cook Strait</a> between New Zealand's main islands</li> <li>23 km – depth of the <a href="/wiki/1931_Dogger_Bank_earthquake" title="1931 Dogger Bank earthquake">largest earthquake ever recorded in the United Kingdom</a>, in 1931 at the <a href="/wiki/Dogger_Bank" title="Dogger Bank">Dogger Bank</a> of the <a href="/wiki/North_Sea" title="North Sea">North Sea</a></li> <li>34 km – narrowest width of the <a href="/wiki/English_Channel" title="English Channel">English Channel</a> at the <a href="/wiki/Strait_of_Dover" title="Strait of Dover">Strait of Dover</a></li> <li>50 km – approximate height of the <a href="/wiki/Stratosphere" title="Stratosphere">stratosphere</a></li> <li>90 km – width of the <a href="/wiki/Bering_Strait" title="Bering Strait">Bering Strait</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Astronomical_6">Astronomical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=67" title="Edit section: Astronomical">edit</a>]</div> <ul><li>10 km – diameter of the most massive <a href="/wiki/Neutron_star" title="Neutron star">neutron stars</a> (3–5 <a href="/wiki/Solar_mass" title="Solar mass">solar masses</a>)</li> <li>13 km – mean diameter of <a href="/wiki/Deimos_(moon)" title="Deimos (moon)">Deimos</a>, the smaller moon of <a href="/wiki/Mars" title="Mars">Mars</a></li> <li>20 km – diameter of the least massive neutron stars (1.44 solar masses)</li> <li>20 km – diameter of <a href="/wiki/Leda_(moon)" title="Leda (moon)">Leda</a>, one of <a href="/wiki/Jupiter" title="Jupiter">Jupiter</a>'s moons</li> <li>20 km – diameter of <a href="/wiki/Pan_(moon)" title="Pan (moon)">Pan</a>, one of <a href="/wiki/Saturn" title="Saturn">Saturn</a>'s moons</li> <li>22 km – diameter of <a href="/wiki/Phobos_(moon)" title="Phobos (moon)">Phobos</a>, the larger moon of <a href="/wiki/Mars" title="Mars">Mars</a></li> <li>27 km – height of <a href="/wiki/Olympus_Mons" title="Olympus Mons">Olympus Mons</a> above the <a href="/wiki/Mars" title="Mars">Mars</a> reference level,<a href="#cite_note-162">[158]</a><a href="#cite_note-163">[159]</a> the highest-known mountain of the <a href="/wiki/Solar_System" title="Solar System">Solar System</a></li> <li>30.8568 km – 1 picoparsec</li> <li>43 km – diameter difference of <a href="/wiki/Earth" title="Earth">Earth</a>'s <a href="/wiki/Equatorial_bulge" title="Equatorial bulge">equatorial bulge</a></li> <li>66 km – diameter of <a href="/wiki/Naiad_(moon)" title="Naiad (moon)">Naiad</a>, the innermost of <a href="/wiki/Neptune" title="Neptune">Neptune</a>'s moons</li></ul> <div class="mw-heading mw-heading2"><h2 id="100_kilometres">100 kilometres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=68" title="Edit section: 100 kilometres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Suez_canal_30.55N_32.28E.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Suez_canal_30.55N_32.28E.jpg/170px-Suez_canal_30.55N_32.28E.jpg" decoding="async" width="170" height="338" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Suez_canal_30.55N_32.28E.jpg/255px-Suez_canal_30.55N_32.28E.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b9/Suez_canal_30.55N_32.28E.jpg/340px-Suez_canal_30.55N_32.28E.jpg 2x" data-file-width="2299" data-file-height="4571" /></a><figcaption>The <a href="/wiki/Suez_Canal" title="Suez Canal">Suez Canal</a> is 163 km (101 mi) long.</figcaption></figure> A length of 100 kilometres (about 62 miles), as a rough amount, is relatively common in measurements on Earth and for some astronomical objects. It is the altitude at which the <a href="/wiki/F%C3%A9d%C3%A9ration_A%C3%A9ronautique_Internationale" title="Fédération Aéronautique Internationale">FAI</a> defines <a href="/wiki/Spaceflight" title="Spaceflight">spaceflight</a> to begin. To help compare <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> between 100 and 1,000 <a href="/wiki/Kilometre" title="Kilometre">kilometres</a> (105 and 106 <a href="/wiki/Metre" title="Metre">metres</a>). <div class="mw-heading mw-heading3"><h3 id="Conversions_7">Conversions</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=69" title="Edit section: Conversions">edit</a>]</div> A distance of 100 kilometres is equal to about 62 miles (or 62.13711922 miles). <div class="mw-heading mw-heading3"><h3 id="Human-defined_scales_and_structures_7">Human-defined scales and structures</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=70" title="Edit section: Human-defined scales and structures">edit</a>]</div> <ul><li>100 km – the <a href="/wiki/Karman_line" class="mw-redirect" title="Karman line">Karman line</a>: the internationally recognized boundary of <a href="/wiki/Outer_space" title="Outer space">outer space</a></li> <li>105 km – distance from <a href="/wiki/Giridih" title="Giridih">Giridih</a> to <a href="/wiki/Bokaro_Steel_City" title="Bokaro Steel City">Bokaro</a></li> <li>109 km – length of <a href="/wiki/High_Speed_1" title="High Speed 1">High Speed 1</a> between London and the Channel Tunnel<a href="#cite_note-164">[160]</a></li> <li>130 km – range of a <a href="/wiki/Scud" class="mw-redirect" title="Scud">Scud</a>-A missile</li> <li>163 km – length of the <a href="/wiki/Suez_Canal" title="Suez Canal">Suez Canal</a></li> <li>164 km – length of the <a href="/wiki/Danyang%E2%80%93Kunshan_Grand_Bridge" title="Danyang–Kunshan Grand Bridge">Danyang–Kunshan Grand Bridge</a></li> <li>213 km – length of <a href="/wiki/Paris_M%C3%A9tro" title="Paris Métro">Paris Métro</a></li> <li>217 km – length of the <a href="/wiki/Grand_Union_Canal" title="Grand Union Canal">Grand Union Canal</a></li> <li>223 km – length of the <a href="/wiki/Madrid_Metro" title="Madrid Metro">Madrid Metro</a></li> <li>300 km – range of a Scud-B missile</li> <li>386 km – altitude of the <a href="/wiki/International_Space_Station" title="International Space Station">International Space Station</a></li> <li>408 km – length of the <a href="/wiki/London_Underground" title="London Underground">London Underground</a> (active track)</li> <li>460 km – distance from <a href="/wiki/London" title="London">London</a> to <a href="/wiki/Paris" title="Paris">Paris</a></li> <li>470 km – distance from <a href="/wiki/Dublin" title="Dublin">Dublin</a> to <a href="/wiki/London" title="London">London</a> <a href="/wiki/As_the_crow_flies" title="As the crow flies">as the crow flies</a></li> <li>600 km – range of a Scud-C missile</li> <li>600 km – height above ground of the <a href="/wiki/Hubble_Space_Telescope" title="Hubble Space Telescope">Hubble Space Telescope</a></li> <li>804.67 km – (500 miles) distance of the <a href="/wiki/Indy_500" class="mw-redirect" title="Indy 500">Indy 500</a> automobile race</li></ul> <div class="mw-heading mw-heading3"><h3 id="Geographical_3">Geographical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=71" title="Edit section: Geographical">edit</a>]</div> <ul><li>42 km – width of <a href="/wiki/Singapore" title="Singapore">Singapore</a></li> <li>75 km – width of <a href="/wiki/Rhode_Island" title="Rhode Island">Rhode Island</a></li> <li>111 km – distance covered by one degree of <a href="/wiki/Latitude" title="Latitude">latitude</a> on Earth's surface</li> <li>120 km – width of <a href="/wiki/Brunei" title="Brunei">Brunei</a></li> <li>180 km – distance between <a href="/wiki/Mumbai" title="Mumbai">Mumbai</a> and <a href="/wiki/Nashik" title="Nashik">Nashik</a></li> <li>200 km – width of <a href="/wiki/Qatar" title="Qatar">Qatar</a></li> <li>203 km – length of <a href="/wiki/Sognefjorden" class="mw-redirect" title="Sognefjorden">Sognefjorden</a>, the third-largest <a href="/wiki/Fjord" title="Fjord">fjord</a> in the world</li> <li>220 km – distance between <a href="/wiki/Pune" title="Pune">Pune</a> and Nashik</li> <li>240 km – width of <a href="/wiki/Rwanda" title="Rwanda">Rwanda</a></li> <li>240 km – widest width of the <a href="/wiki/English_Channel" title="English Channel">English Channel</a></li> <li>400 km – width of <a href="/wiki/West_Virginia" title="West Virginia">West Virginia</a></li> <li>430 km – length of the <a href="/wiki/Pyrenees" title="Pyrenees">Pyrenees</a></li> <li>450 km – length of the <a href="/wiki/Grand_Canyon" title="Grand Canyon">Grand Canyon</a></li> <li>500 km – widest width of <a href="/wiki/Geography_of_Sweden" title="Geography of Sweden">Sweden</a> from east to west</li> <li>501 km – width of <a href="/wiki/Uganda" title="Uganda">Uganda</a></li> <li>550 km – distance from <a href="/wiki/San_Francisco" title="San Francisco">San Francisco</a> to <a href="/wiki/Los_Angeles" title="Los Angeles">Los Angeles</a> <a href="/wiki/As_the_crow_flies" title="As the crow flies">as the crow flies</a></li> <li>560 km – distance of <a href="/wiki/Bordeaux%E2%80%93Paris" title="Bordeaux–Paris">Bordeaux–Paris</a>, formerly[<a href="/wiki/Wikipedia:Manual_of_Style/Dates_and_numbers#Chronological_items" title="Wikipedia:Manual of Style/Dates and numbers">when?</a>] the longest one-day professional cycling race<a href="#cite_note-cyclingrace-165">[161]</a></li> <li>590 km – length of land boundary between <a href="/wiki/Geography_of_Finland" title="Geography of Finland">Finland</a> and <a href="/wiki/Geography_of_Sweden" title="Geography of Sweden">Sweden</a></li> <li>724 km – length of the <a href="/wiki/Om_River" class="mw-redirect" title="Om River">Om River</a></li> <li>800 km – width of <a href="/wiki/Germany" title="Germany">Germany</a></li> <li>871 km – distance from <a href="/wiki/Sydney" title="Sydney">Sydney</a> to <a href="/wiki/Melbourne" title="Melbourne">Melbourne</a> (along the <a href="/wiki/Hume_Highway" title="Hume Highway">Hume Highway</a>)</li> <li>897 km – length of the <a href="/wiki/River_Douro" class="mw-redirect" title="River Douro">River Douro</a></li> <li>900 km – distance from <a href="/wiki/Berlin" title="Berlin">Berlin</a> to <a href="/wiki/Stockholm" title="Stockholm">Stockholm</a></li> <li>956 km – distance from <a href="/wiki/Washington,_D.C." title="Washington, D.C.">Washington, D.C.</a>, to <a href="/wiki/Chicago" title="Chicago">Chicago</a>, Illinois, <a href="/wiki/As_the_crow_flies" title="As the crow flies">as the crow flies</a></li> <li>970 km – distance from <a href="/wiki/Land%27s_End_to_John_o%27_Groats" title="Land's End to John o' Groats">Land's End to John o' Groats</a> <a href="/wiki/As_the_crow_flies" title="As the crow flies">as the crow flies</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Astronomical_7">Astronomical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=72" title="Edit section: Astronomical">edit</a>]</div> <ul><li>100 km – the altitude at which the <a href="/wiki/F%C3%A9d%C3%A9ration_A%C3%A9ronautique_Internationale" title="Fédération Aéronautique Internationale">FAI</a> defines <a href="/wiki/Spaceflight" title="Spaceflight">spaceflight</a> to begin</li> <li>167 km – diameter of <a href="/wiki/Amalthea_(moon)" title="Amalthea (moon)">Amalthea</a>, one of <a href="/wiki/Jupiter" title="Jupiter">Jupiter</a>'s inner moons</li> <li>200 km – width of <a href="/wiki/Valles_Marineris" title="Valles Marineris">Valles Marineris</a></li> <li>220 km – diameter of <a href="/wiki/Phoebe_(moon)" title="Phoebe (moon)">Phoebe</a>, the largest of <a href="/wiki/Saturn" title="Saturn">Saturn</a>'s outer moons</li> <li>300 km – the approximate distance travelled by light in one <a href="/wiki/Millisecond" title="Millisecond">millisecond</a></li> <li>340 km – diameter of <a href="/wiki/Nereid_(moon)" title="Nereid (moon)">Nereid</a>, the third-largest moon of <a href="/wiki/Neptune" title="Neptune">Neptune</a></li> <li>350 km – lower bound of <a href="/wiki/Low_Earth_orbit" title="Low Earth orbit">Low Earth orbit</a></li> <li>420 km – diameter of <a href="/wiki/Proteus_(moon)" title="Proteus (moon)">Proteus</a>, the second-largest moon of Neptune</li> <li>468 km – diameter of the <a href="/wiki/Asteroid" title="Asteroid">asteroid</a> <a href="/wiki/4_Vesta" title="4 Vesta">4 Vesta</a></li> <li>472 km – diameter of <a href="/wiki/Miranda_(moon)" title="Miranda (moon)">Miranda</a>, one of <a href="/wiki/Uranus" title="Uranus">Uranus</a>'s major moons</li> <li>974.6 km – greatest diameter of <a href="/wiki/Ceres_(dwarf_planet)" title="Ceres (dwarf planet)">1 Ceres</a>,<a href="#cite_note-ReferenceB-37">[36]</a> the largest Solar System <a href="/wiki/Asteroid" title="Asteroid">asteroid</a><a href="#cite_note-Asteroid-planet?-38">[note 2]</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="1_megametre">1 megametre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=73" title="Edit section: 1 megametre">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e6m_comparison_Mars_Mercury_Moon_Pluto_Haumea_-_no_transparency.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/1e6m_comparison_Mars_Mercury_Moon_Pluto_Haumea_-_no_transparency.png/220px-1e6m_comparison_Mars_Mercury_Moon_Pluto_Haumea_-_no_transparency.png" decoding="async" width="220" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/56/1e6m_comparison_Mars_Mercury_Moon_Pluto_Haumea_-_no_transparency.png/330px-1e6m_comparison_Mars_Mercury_Moon_Pluto_Haumea_-_no_transparency.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/56/1e6m_comparison_Mars_Mercury_Moon_Pluto_Haumea_-_no_transparency.png/440px-1e6m_comparison_Mars_Mercury_Moon_Pluto_Haumea_-_no_transparency.png 2x" data-file-width="1280" data-file-height="1024" /></a><figcaption>Small planets, the <a href="/wiki/Moon" title="Moon">Moon</a> and <a href="/wiki/Dwarf_planet" title="Dwarf planet">dwarf planets</a> in the Solar System have diameters from one to ten million metres. Top row: <a href="/wiki/Mars" title="Mars">Mars</a> (left), <a href="/wiki/Mercury_(planet)" title="Mercury (planet)">Mercury</a> (right); bottom row: <a href="/wiki/Moon" title="Moon">Moon</a> (left), <a href="/wiki/Pluto" title="Pluto">Pluto</a> (center), and <a href="/wiki/Haumea_(dwarf_planet)" class="mw-redirect" title="Haumea (dwarf planet)">Haumea</a> (right), to scale.</figcaption></figure> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">megametre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">Mm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 1000000 <a href="/wiki/Metre" title="Metre">metres</a> (106 m). To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> starting at 106 <a href="/wiki/Metre" title="Metre">m</a> (<a href="#1_megametre">1 Mm</a> or 1,000 <a href="/wiki/Kilometre" title="Kilometre">km</a>). <div class="mw-heading mw-heading3"><h3 id="Conversions_8">Conversions</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=74" title="Edit section: Conversions">edit</a>]</div> 1 megametre is equal to: <ul><li>1 E+6 m (one million metres)</li> <li>approximately 621.37 <a href="/wiki/Mile" title="Mile">miles</a></li> <li>1 E+12 μm (one trillion micrometres)</li> <li>Side of <a href="/wiki/Square_(geometry)" class="mw-redirect" title="Square (geometry)">square</a> with area 1,000,000 km2</li></ul> <div class="mw-heading mw-heading3"><h3 id="Human-defined_scales_and_structures_8">Human-defined scales and structures</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=75" title="Edit section: Human-defined scales and structures">edit</a>]</div> <ul><li>2.100 Mm – length of proposed <a href="/wiki/Iran-Pakistan-India_gas_pipe" class="mw-redirect" title="Iran-Pakistan-India gas pipe">Iran-Pakistan-India gas pipe</a></li> <li>2.100 Mm – distance from <a href="/wiki/Casablanca" title="Casablanca">Casablanca</a> to <a href="/wiki/Rome" title="Rome">Rome</a></li> <li>2.288 Mm – length of the official <a href="/wiki/Alaska_Highway" title="Alaska Highway">Alaska Highway</a> when it was built in the 1940s<a href="#cite_note-166">[162]</a></li> <li>3.069 Mm – length of <a href="/wiki/Interstate_95" title="Interstate 95">Interstate 95</a> (from <a href="/wiki/Houlton,_Maine" title="Houlton, Maine">Houlton, Maine</a>, to <a href="/wiki/Miami" title="Miami">Miami</a>, Florida)</li> <li>3.846 Mm – length of <a href="/wiki/U.S._Route_1" title="U.S. Route 1">U.S. Route 1</a> (from <a href="/wiki/Fort_Kent,_Maine" title="Fort Kent, Maine">Fort Kent, Maine</a>, to <a href="/wiki/Key_West,_Florida" class="mw-redirect" title="Key West, Florida">Key West, Florida</a>)</li> <li>5.000 Mm – width of the <a href="/wiki/United_States" title="United States">United States</a></li> <li>5.007 Mm – estimated length of <a href="/wiki/Interstate_90" title="Interstate 90">Interstate 90</a> (Seattle, Washington, to Boston, Massachusetts)</li> <li>5.614 Mm – length of the Australian <a href="/wiki/Dingo_Fence" title="Dingo Fence">Dingo Fence</a><a href="#cite_note-167">[163]</a></li> <li>6.371 Mm – global-average <a href="/wiki/Earth_radius" title="Earth radius">Earth radius</a></li> <li>6.4 Mm – length of the <a href="/wiki/Great_Wall_of_China" title="Great Wall of China">Great Wall of China</a></li> <li>7.821 Mm – length of the <a href="/wiki/Trans-Canada_Highway" title="Trans-Canada Highway">Trans-Canada Highway</a>, the world's longest national highway (from <a href="/wiki/Victoria,_British_Columbia" title="Victoria, British Columbia">Victoria, British Columbia</a>, to <a href="/wiki/St._John%27s,_Newfoundland" class="mw-redirect" title="St. John's, Newfoundland">St. John's, Newfoundland</a>)</li> <li>8.836 Mm – road distance between <a href="/wiki/Prudhoe_Bay" class="mw-redirect" title="Prudhoe Bay">Prudhoe Bay</a>, Alaska, and <a href="/wiki/Key_West,_Florida" class="mw-redirect" title="Key West, Florida">Key West, Florida</a>, the endpoints of the U.S. road network</li> <li>8.852 Mm – aggregate length of the <a href="/wiki/Great_Wall_of_China" title="Great Wall of China">Great Wall of China</a>, including trenches, hills and rivers<a href="#cite_note-168">[164]</a></li> <li>9.259 Mm – length of the <a href="/wiki/Trans-Siberian_railway" class="mw-redirect" title="Trans-Siberian railway">Trans-Siberian railway</a><a href="#cite_note-169">[165]</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Sports_5">Sports</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=76" title="Edit section: Sports">edit</a>]</div> <ul><li>The <a href="/wiki/Munda_Biddi_Trail" title="Munda Biddi Trail">Munda Biddi Trail</a> in <a href="/wiki/Western_Australia" title="Western Australia">Western Australia</a>, <a href="/wiki/Australia" title="Australia">Australia</a>, is over 1,000 km long – the world's longest off-road cycle trail</li> <li>1.200 Mm – the length of the <a href="/wiki/Paris%E2%80%93Brest%E2%80%93Paris" title="Paris–Brest–Paris">Paris–Brest–Paris</a> bicycling event</li> <li>Several endurance auto races are, or were, run for 1,000 km: <ul><li><a href="/wiki/Bathurst_1000" title="Bathurst 1000">Bathurst 1000</a></li> <li><a href="/wiki/1000_km_Brands_Hatch" title="1000 km Brands Hatch">1000 km Brands Hatch</a></li> <li><a href="/wiki/1000_km_Buenos_Aires" title="1000 km Buenos Aires">1000 km Buenos Aires</a></li> <li><a href="/wiki/1000_km_Donington" class="mw-redirect" title="1000 km Donington">1000 km Donington</a></li> <li><a href="/wiki/1000_km_Monza" class="mw-redirect" title="1000 km Monza">1000 km Monza</a></li> <li><a href="/wiki/1000_km_N%C3%BCrburgring" class="mw-redirect" title="1000 km Nürburgring">1000 km Nürburgring</a></li> <li><a href="/wiki/1000_km_Silverstone" class="mw-redirect" title="1000 km Silverstone">1000 km Silverstone</a></li> <li><a href="/wiki/1000_km_Spa" class="mw-redirect" title="1000 km Spa">1000 km Spa</a></li> <li><a href="/wiki/1000_km_Suzuka" class="mw-redirect" title="1000 km Suzuka">1000 km Suzuka</a></li> <li><a href="/wiki/1000_km_Zeltweg" title="1000 km Zeltweg">1000 km Zeltweg</a></li></ul></li></ul> <div class="mw-heading mw-heading3"><h3 id="Geographical_4">Geographical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=77" title="Edit section: Geographical">edit</a>]</div> <ul><li>1.010 Mm – distance from <a href="/wiki/San_Diego" title="San Diego">San Diego</a> to <a href="/wiki/El_Paso" class="mw-redirect" title="El Paso">El Paso</a> <a href="/wiki/As_the_crow_flies" title="As the crow flies">as the crow flies</a></li> <li>1.100 Mm – length of <a href="/wiki/Italy" title="Italy">Italy</a></li> <li>1.200 Mm – length of <a href="/wiki/California" title="California">California</a></li> <li>1.200 Mm – width of <a href="/wiki/Texas" title="Texas">Texas</a></li> <li>1.500 Mm – length of the <a href="/wiki/Gobi_Desert" title="Gobi Desert">Gobi Desert</a></li> <li>1.600 Mm – length of the <a href="/wiki/Namib" title="Namib">Namib</a>, the oldest desert on Earth</li> <li>2.000 Mm – distance from <a href="/wiki/Beijing" title="Beijing">Beijing</a> to <a href="/wiki/Hong_Kong" title="Hong Kong">Hong Kong</a> as the crow flies</li> <li>2.300 Mm – length of the <a href="/wiki/Great_Barrier_Reef" title="Great Barrier Reef">Great Barrier Reef</a></li> <li>2.800 Mm – narrowest width of <a href="/wiki/Atlantic_Ocean" title="Atlantic Ocean">Atlantic Ocean</a> (Brazil-West Africa)</li> <li>2.850 Mm – length of the <a href="/wiki/Danube" title="Danube">Danube</a> river</li> <li>2.205 Mm – length of <a href="/wiki/Geography_of_Sweden" title="Geography of Sweden">Sweden</a>'s total land boundaries</li> <li>2.515 Mm – length of <a href="/wiki/Geography_of_Norway" title="Geography of Norway">Norway</a>'s total land boundaries</li> <li>3.690 Mm – length of the <a href="/wiki/Volga" title="Volga">Volga</a> river, longest in Europe</li> <li>4.000 Mm – length of the <a href="/wiki/Kalahari_Desert" title="Kalahari Desert">Kalahari Desert</a></li> <li>4.350 Mm – length of the <a href="/wiki/Yellow_River" title="Yellow River">Yellow River</a></li> <li>4.600 Mm – width of the <a href="/wiki/Mediterranean_Sea" title="Mediterranean Sea">Mediterranean Sea</a></li> <li>4.800 Mm – length of the <a href="/wiki/Sahara" title="Sahara">Sahara</a></li> <li>4.800 Mm – widest width of <a href="/wiki/Atlantic_Ocean" title="Atlantic Ocean">Atlantic Ocean</a> (U.S.-Northern Africa)</li> <li>5.100 Mm – distance from <a href="/wiki/Dublin" title="Dublin">Dublin</a> to <a href="/wiki/New_York_City" title="New York City">New York</a> as the crow flies</li> <li>6.270 Mm – length of the <a href="/wiki/Mississippi_River" title="Mississippi River">Mississippi</a>-<a href="/wiki/Missouri_River" title="Missouri River">Missouri River</a> system</li> <li>6.380 Mm – length of the <a href="/wiki/Yangtze_River" class="mw-redirect" title="Yangtze River">Yangtze River</a></li> <li>6.400 Mm – Length of the <a href="/wiki/Amazon_River" title="Amazon River">Amazon River</a></li> <li>6.758 Mm – Length of the <a href="/wiki/Nile_River" class="mw-redirect" title="Nile River">Nile</a> system, longest on <a href="/wiki/Earth" title="Earth">Earth</a></li> <li>8.200 Mm – Approximate Distance from <a href="/wiki/Dublin" title="Dublin">Dublin</a> to <a href="/wiki/San_Francisco" title="San Francisco">San Francisco</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Astronomical_8">Astronomical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=78" title="Edit section: Astronomical">edit</a>]</div> <ul><li>1.000 Mm – estimated shortest axis of <a href="/wiki/Ellipsoid" title="Ellipsoid">triaxial</a> <a href="/wiki/Dwarf_planet" title="Dwarf planet">dwarf planet</a> <a href="/wiki/Haumea" title="Haumea">Haumea</a></li> <li>1.186 Mm – diameter of <a href="/wiki/Charon_(moon)" title="Charon (moon)">Charon</a>, the largest moon of <a href="/wiki/Pluto" title="Pluto">Pluto</a></li> <li>1.280 Mm – diameter of the trans-Neptunian object <a href="/wiki/50000_Quaoar" class="mw-redirect" title="50000 Quaoar">50000 Quaoar</a></li> <li>1.436 Mm – diameter of <a href="/wiki/Iapetus_(moon)" title="Iapetus (moon)">Iapetus</a>, one of <a href="/wiki/Saturn" title="Saturn">Saturn</a>'s major moons</li> <li>1.578 Mm – diameter of <a href="/wiki/Titania_(moon)" title="Titania (moon)">Titania</a>, the largest of <a href="/wiki/Uranus" title="Uranus">Uranus</a>'s moons</li> <li>1.960 Mm – estimated longest axis of <a href="/wiki/Haumea_(dwarf_planet)" class="mw-redirect" title="Haumea (dwarf planet)">Haumea</a></li> <li>2.326 Mm – diameter of the dwarf planet <a href="/wiki/Eris_(dwarf_planet)" title="Eris (dwarf planet)">Eris</a>, the largest <a href="/wiki/Trans-Neptunian_object" title="Trans-Neptunian object">trans-Neptunian object</a> found to date</li> <li>2.376 Mm – diameter of <a href="/wiki/Pluto" title="Pluto">Pluto</a></li> <li>2.707 Mm – diameter of <a href="/wiki/Triton_(moon)" title="Triton (moon)">Triton</a>, largest moon of <a href="/wiki/Neptune" title="Neptune">Neptune</a></li> <li>3.122 Mm – diameter of <a href="/wiki/Europa_(moon)" title="Europa (moon)">Europa</a>, the smallest <a href="/wiki/Galilean_satellite" class="mw-redirect" title="Galilean satellite">Galilean satellite</a> of <a href="/wiki/Jupiter" title="Jupiter">Jupiter</a></li> <li>3.476 Mm – diameter of <a href="/wiki/Earth" title="Earth">Earth</a>'s <a href="/wiki/Moon" title="Moon">Moon</a></li> <li>3.643 Mm – diameter of <a href="/wiki/Io_(moon)" title="Io (moon)">Io</a>, a moon of Jupiter</li> <li>4.821 Mm – diameter of <a href="/wiki/Callisto_(moon)" title="Callisto (moon)">Callisto</a>, a moon of Jupiter</li> <li>4.879 Mm – diameter of <a href="/wiki/Mercury_(planet)" title="Mercury (planet)">Mercury</a></li> <li>5.150 Mm – diameter of <a href="/wiki/Titan_(moon)" title="Titan (moon)">Titan</a>, the largest moon of Saturn</li> <li>5.262 Mm – diameter of Jupiter's moon <a href="/wiki/Ganymede_(moon)" title="Ganymede (moon)">Ganymede</a>, the largest moon in the <a href="/wiki/Solar_System" title="Solar System">Solar System</a></li> <li>6.371 Mm – <a href="/wiki/Earth_radius" title="Earth radius">radius of Earth</a></li> <li>6.792 Mm – diameter of <a href="/wiki/Mars" title="Mars">Mars</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="10_megametres">10 megametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=79" title="Edit section: 10 megametres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e7m_comparison_Uranus_Neptune_Sirius_B_Earth_Venus.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/3/3e/1e7m_comparison_Uranus_Neptune_Sirius_B_Earth_Venus.png/220px-1e7m_comparison_Uranus_Neptune_Sirius_B_Earth_Venus.png" decoding="async" width="220" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/3e/1e7m_comparison_Uranus_Neptune_Sirius_B_Earth_Venus.png/330px-1e7m_comparison_Uranus_Neptune_Sirius_B_Earth_Venus.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/3e/1e7m_comparison_Uranus_Neptune_Sirius_B_Earth_Venus.png/440px-1e7m_comparison_Uranus_Neptune_Sirius_B_Earth_Venus.png 2x" data-file-width="1280" data-file-height="1024" /></a><figcaption>Planets from Venus up to Uranus have diameters from ten to one hundred million metres. Top row: <a href="/wiki/Uranus" title="Uranus">Uranus</a> (left), <a href="/wiki/Neptune" title="Neptune">Neptune</a> (right); middle row: <a href="/wiki/Earth" title="Earth">Earth</a> (left), <a href="/wiki/Sirius_B" class="mw-redirect" title="Sirius B">Sirius B</a> (center), and <a href="/wiki/Venus" title="Venus">Venus</a> (right), to scale.</figcaption></figure> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444"><table class="box-More_citations_needed_section plainlinks metadata ambox ambox-content ambox-Refimprove" role="presentation"><tbody><tr><td class="mbox-image"><div class="mbox-image-div"><a href="/wiki/File:Question_book-new.svg" class="mw-file-description"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/50px-Question_book-new.svg.png" decoding="async" width="50" height="39" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/75px-Question_book-new.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/99/Question_book-new.svg/100px-Question_book-new.svg.png 2x" data-file-width="512" data-file-height="399" /></a></div></td><td class="mbox-text"><div class="mbox-text-span">This section needs additional citations for <a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability">verification</a>. Please help <a href="/wiki/Special:EditPage/Orders_of_magnitude_(length)" title="Special:EditPage/Orders of magnitude (length)">improve this article</a> by <a href="/wiki/Help:Referencing_for_beginners" title="Help:Referencing for beginners">adding citations to reliable sources</a> in this section. Unsourced material may be challenged and removed. (April 2007) (<a href="/wiki/Help:Maintenance_template_removal" title="Help:Maintenance template removal">Learn how and when to remove this message</a>)</div></td></tr></tbody></table> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> starting at 107 <a href="/wiki/Metre" title="Metre">metres</a> (<a href="#10_megametre">10 megametres</a> or 10,000 <a href="/wiki/Kilometre" title="Kilometre">kilometres</a>). <div class="mw-heading mw-heading3"><h3 id="Conversions_9">Conversions</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=80" title="Edit section: Conversions">edit</a>]</div> 10 megametres (10 Mm) is <ul><li>6,215 <a href="/wiki/Mile" title="Mile">miles</a></li> <li>side of a <a href="/wiki/Square_(geometry)" class="mw-redirect" title="Square (geometry)">square</a> of area 100,000,000 <a href="/wiki/Square_kilometre" title="Square kilometre">square kilometres</a> (km2)</li> <li>radius of a <a href="/wiki/Circle" title="Circle">circle</a> of area 314,159,265 km2</li></ul> <div class="mw-heading mw-heading3"><h3 id="Human-defined_scales_and_structures_9">Human-defined scales and structures</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=81" title="Edit section: Human-defined scales and structures">edit</a>]</div> <ul><li>11.085 Mm – length of the <a href="/wiki/Kyiv" title="Kyiv">Kyiv</a>-<a href="/wiki/Vladivostok" title="Vladivostok">Vladivostok</a> railway, a longer variant of the <a href="/wiki/Trans-Siberian_railway" class="mw-redirect" title="Trans-Siberian railway">Trans-Siberian railway</a><a href="#cite_note-170">[166]</a></li> <li>13.300 Mm – length of roads rehabilitated and widened under the <a href="/wiki/National_Highway_Development_Project" class="mw-redirect" title="National Highway Development Project">National Highway Development Project</a> (launched in 1998) in <a href="/wiki/India" title="India">India</a></li> <li>39.000 Mm – length of the <a href="/wiki/SEA-ME-WE_3" title="SEA-ME-WE 3">SEA-ME-WE 3</a> optical submarine telecommunications cable, joining 39 points between <a href="/wiki/Norden,_Lower_Saxony" title="Norden, Lower Saxony">Norden</a>, Germany, and <a href="/wiki/Okinawa_Prefecture" title="Okinawa Prefecture">Okinawa</a>, Japan</li> <li>67.000 Mm – total length of <a href="/wiki/National_highways_of_India" title="National highways of India">National Highways in India</a></li> <li>80.000 Mm – 20,000 (metric, French) <a href="/wiki/League_(unit)" title="League (unit)">leagues</a> (see <a href="/wiki/Jules_Verne" title="Jules Verne">Jules Verne</a>, <a href="/wiki/Twenty_Thousand_Leagues_Under_the_Seas" title="Twenty Thousand Leagues Under the Seas">Twenty Thousand Leagues Under the Seas</a>)</li></ul> <div class="mw-heading mw-heading3"><h3 id="Geographical_5">Geographical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=82" title="Edit section: Geographical">edit</a>]</div> <ul><li>10 Mm – approximate altitude of the outer boundary of the <a href="/wiki/Exosphere" title="Exosphere">exosphere</a></li> <li>10.001 Mm – length of the <a href="/wiki/Meridian_arc" title="Meridian arc">meridian arc</a> from the <a href="/wiki/North_Pole" title="North Pole">North Pole</a> to the <a href="/wiki/Equator" title="Equator">Equator</a> (the original definition of the <a href="/wiki/Metre" title="Metre">metre</a> was based on this length)</li> <li>40.000 Mm – length of the <a href="/wiki/Ring_of_Fire" title="Ring of Fire">Ring of Fire</a></li> <li>60.000 Mm – total length of the <a href="/wiki/Mid-ocean_ridge" title="Mid-ocean ridge">mid-ocean ridges</a></li></ul> <div class="mw-heading mw-heading3"><h3 id="Astronomical_9">Astronomical</h3>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=83" title="Edit section: Astronomical">edit</a>]</div> <ul><li>12.000 Mm – diameter of <a href="/wiki/Sirius" title="Sirius">Sirius B</a>, a <a href="/wiki/White_dwarf" title="White dwarf">white dwarf</a><a href="#cite_note-171">[167]</a></li> <li>12.104 Mm – diameter of <a href="/wiki/Venus" title="Venus">Venus</a></li> <li>12.742 Mm – diameter of <a href="/wiki/Earth" title="Earth">Earth</a></li> <li>12.900 Mm – minimum distance of the <a href="/wiki/Meteoroid" title="Meteoroid">meteoroid</a> <a href="/wiki/2004_FU162" title="2004 FU162">2004 FU162</a> from the centre of Earth on 31 March 2004, closest on record</li> <li>14.000 Mm – smallest diameter of Jupiter's <a href="/wiki/Great_Red_Spot" title="Great Red Spot">Great Red Spot</a></li> <li>19.000 Mm – separation between <a href="/wiki/Pluto" title="Pluto">Pluto</a> and <a href="/wiki/Charon_(moon)" title="Charon (moon)">Charon</a></li> <li>30.8568 Mm – 1 nanoparsec</li> <li>34.770 Mm – minimum distance of the <a href="/wiki/Asteroid" title="Asteroid">asteroid</a> <a href="/wiki/99942_Apophis" title="99942 Apophis">99942 Apophis</a> on 13 April 2029 from the centre of Earth</li> <li>35.786 Mm – altitude of <a href="/wiki/Geostationary_orbit" title="Geostationary orbit">geostationary orbit</a></li> <li>40.005 Mm – polar circumference of the Earth</li> <li>40.077 Mm – equatorial circumference of the Earth</li> <li>49.528 Mm – diameter of <a href="/wiki/Neptune" title="Neptune">Neptune</a></li> <li>51.118 Mm – diameter of <a href="/wiki/Uranus" title="Uranus">Uranus</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="100_megametres">100 megametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=84" title="Edit section: 100 megametres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e8m_comparison_Saturn_Jupiter_OGLE-TR-122b_with_Uranus_Neptune_Sirius_B_Earth_Venus_no_transparency.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7e/1e8m_comparison_Saturn_Jupiter_OGLE-TR-122b_with_Uranus_Neptune_Sirius_B_Earth_Venus_no_transparency.png/220px-1e8m_comparison_Saturn_Jupiter_OGLE-TR-122b_with_Uranus_Neptune_Sirius_B_Earth_Venus_no_transparency.png" decoding="async" width="220" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7e/1e8m_comparison_Saturn_Jupiter_OGLE-TR-122b_with_Uranus_Neptune_Sirius_B_Earth_Venus_no_transparency.png/330px-1e8m_comparison_Saturn_Jupiter_OGLE-TR-122b_with_Uranus_Neptune_Sirius_B_Earth_Venus_no_transparency.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7e/1e8m_comparison_Saturn_Jupiter_OGLE-TR-122b_with_Uranus_Neptune_Sirius_B_Earth_Venus_no_transparency.png/440px-1e8m_comparison_Saturn_Jupiter_OGLE-TR-122b_with_Uranus_Neptune_Sirius_B_Earth_Venus_no_transparency.png 2x" data-file-width="1280" data-file-height="1024" /></a><figcaption>The <a href="/wiki/Earth" title="Earth">Earth</a>-<a href="/wiki/Moon" title="Moon">Moon</a> orbit, <a href="/wiki/Saturn" title="Saturn">Saturn</a>, <a href="/wiki/OGLE-TR-122b" class="mw-redirect" title="OGLE-TR-122b">OGLE-TR-122b</a>, <a href="/wiki/Jupiter" title="Jupiter">Jupiter</a>, and <a href="/wiki/1_E7_m" class="mw-redirect" title="1 E7 m">other objects</a>, to scale. Click on image for detailed view and links to other length scales.</figcaption></figure> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Scale_model_of_Solar_System_10_billion_to_1.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Scale_model_of_Solar_System_10_billion_to_1.svg/300px-Scale_model_of_Solar_System_10_billion_to_1.svg.png" decoding="async" width="300" height="403" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Scale_model_of_Solar_System_10_billion_to_1.svg/450px-Scale_model_of_Solar_System_10_billion_to_1.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Scale_model_of_Solar_System_10_billion_to_1.svg/600px-Scale_model_of_Solar_System_10_billion_to_1.svg.png 2x" data-file-width="653" data-file-height="878" /></a><figcaption>Scale model at megametres of the main Solar System bodies</figcaption></figure> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Length" title="Length">lengths</a> starting at 108 <a href="/wiki/Metre" title="Metre">metres</a> (<a href="#100_megametre">100 megametres</a> or 100,000 <a href="/wiki/Kilometre" title="Kilometre">kilometres</a> or 62,150 <a href="/wiki/Mile" title="Mile">miles</a>). <ul><li>102 Mm – diameter of <a href="/wiki/HD_149026_b" title="HD 149026 b">HD 149026 b</a>, an unusually dense <a href="/wiki/Gas_giant" title="Gas giant">Jovian planet</a></li> <li>115 Mm – width of Saturn's Rings</li> <li>120 Mm – diameter of <a href="/wiki/EBLM_J0555-57" title="EBLM J0555-57">EBLM J0555-57</a>Ab, the smallest-known star</li> <li>120 Mm – diameter of <a href="/wiki/Saturn" title="Saturn">Saturn</a></li> <li>142 Mm – diameter of <a href="/wiki/Jupiter" title="Jupiter">Jupiter</a>, the largest planet in the <a href="/wiki/Solar_System" title="Solar System">Solar System</a></li> <li>170 Mm – diameter of <a href="/wiki/TRAPPIST-1" title="TRAPPIST-1">TRAPPIST-1</a>, a star discovered to have seven planets around it</li> <li>174 Mm – diameter of <a href="/wiki/OGLE-TR-122b" class="mw-redirect" title="OGLE-TR-122b">OGLE-TR-122b</a>, one of the smallest known stars</li> <li>180 Mm – average distance covered during life</li> <li>215 Mm – diameter of <a href="/wiki/Proxima_Centauri" title="Proxima Centauri">Proxima Centauri</a>, the nearest star to the Solar System</li> <li>257 Mm – diameter of <a href="/wiki/TrES-4b" title="TrES-4b">TrES-4</a>, one of the largest exoplanets</li> <li>260 Mm – diameter of the <a href="/wiki/Barnard%27s_Star" title="Barnard's Star">Barnard's Star</a></li> <li>272 Mm – diameter of <a href="/wiki/WASP-12b" title="WASP-12b">WASP-12b</a></li> <li>299.792 Mm – one <a href="/wiki/Light-second" title="Light-second">light-second</a>; the distance <a href="/wiki/Light" title="Light">light</a> travels in <a href="/wiki/Vacuum" title="Vacuum">vacuum</a> in one <a href="/wiki/Second" title="Second">second</a> (see <a href="/wiki/Speed_of_light" title="Speed of light">speed of light</a>)</li> <li>314 Mm – diameter of <a href="/wiki/CT_Cha_b" class="mw-redirect" title="CT Cha b">CT Cha b</a></li> <li>384.4 Mm (238,855 mi) – average <a href="/wiki/Lunar_distance_(astronomy)" class="mw-redirect" title="Lunar distance (astronomy)">Earth–Moon distance</a><a href="#cite_note-NASA-LD-172">[168]</a></li> <li>671 Mm – separation between <a href="/wiki/Jupiter" title="Jupiter">Jupiter</a> and <a href="/wiki/Europa_(moon)" title="Europa (moon)">Europa</a></li> <li>696 Mm – <a href="/wiki/Solar_radius" title="Solar radius">radius</a> of <a href="/wiki/Sun" title="Sun">Sun</a></li> <li>989 Mm – diameter of <a href="/wiki/Epsilon_Indi" title="Epsilon Indi">Epsilon Indi</a>, one of the nearest stars to Earth</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_gigametre">1 gigametre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=85" title="Edit section: 1 gigametre">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Gigameter_group.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Gigameter_group.png/220px-Gigameter_group.png" decoding="async" width="220" height="128" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Gigameter_group.png/330px-Gigameter_group.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5a/Gigameter_group.png/440px-Gigameter_group.png 2x" data-file-width="960" data-file-height="558" /></a><figcaption>13 things in the gigametre group</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e9m_comparison_Gamma_Orionis,_Algol_B,_the_Sun,_and_smaller_-_antialiased_no_transparency.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/1e9m_comparison_Gamma_Orionis%2C_Algol_B%2C_the_Sun%2C_and_smaller_-_antialiased_no_transparency.png/220px-1e9m_comparison_Gamma_Orionis%2C_Algol_B%2C_the_Sun%2C_and_smaller_-_antialiased_no_transparency.png" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b8/1e9m_comparison_Gamma_Orionis%2C_Algol_B%2C_the_Sun%2C_and_smaller_-_antialiased_no_transparency.png/330px-1e9m_comparison_Gamma_Orionis%2C_Algol_B%2C_the_Sun%2C_and_smaller_-_antialiased_no_transparency.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b8/1e9m_comparison_Gamma_Orionis%2C_Algol_B%2C_the_Sun%2C_and_smaller_-_antialiased_no_transparency.png/440px-1e9m_comparison_Gamma_Orionis%2C_Algol_B%2C_the_Sun%2C_and_smaller_-_antialiased_no_transparency.png 2x" data-file-width="2048" data-file-height="1536" /></a><figcaption>Upper part: <a href="/wiki/Bellatrix" title="Bellatrix">Gamma Orionis</a>, <a href="/wiki/Algol_B" class="mw-redirect" title="Algol B">Algol B</a>, the <a href="/wiki/Sun" title="Sun">Sun</a> (centre), and <a href="/wiki/1_E8_m" class="mw-redirect" title="1 E8 m">other objects</a> to scale</figcaption></figure>; lower part: their darker mirror images (artist's interpretation). The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">gigametre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">Gm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 1000000000 <a href="/wiki/Metre" title="Metre">metres</a> (109 m). To help compare different distances this section lists lengths starting at 109 <a href="/wiki/Metre" title="Metre">metres</a> (1 gigametre (Gm) or 1 billion <a href="/wiki/Metre" title="Metre">metres</a>). <ul><li>1.2 Gm – separation between <a href="/wiki/Saturn" title="Saturn">Saturn</a> and <a href="/wiki/Titan_(moon)" title="Titan (moon)">Titan</a></li> <li>1.39 Gm – diameter of <a href="/wiki/Sun" title="Sun">Sun</a><a href="#cite_note-173">[169]</a><a href="#cite_note-174">[170]</a></li> <li>1.5 Gm – orbit from Earth of the <a href="/wiki/James_Webb_Space_Telescope" title="James Webb Space Telescope">James Webb Space Telescope</a></li> <li>1.71 Gm – diameter of <a href="/wiki/Alpha_Centauri" title="Alpha Centauri">Alpha Centauri</a> A, one of the closest stars.<a href="#cite_note-175">[171]</a></li> <li>2.19 Gm – closest approach of <a href="/wiki/Comet_Lexell" class="mw-redirect" title="Comet Lexell">Comet Lexell</a> to <a href="/wiki/Earth" title="Earth">Earth</a>, happened on 1 July 1770; closest <a href="/wiki/Comet" title="Comet">comet</a> approach on record</li> <li>2.38 Gm – diameter of <a href="/wiki/Sirius" title="Sirius">Sirius</a> A, brightest naked eye star.<a href="#cite_note-176">[172]</a></li> <li>3 Gm – total length of "wiring" in the human brain<a href="#cite_note-177">[173]</a></li> <li>3.5 Gm – diameter of <a href="/wiki/Vega" title="Vega">Vega</a><a href="#cite_note-178">[174]</a></li> <li>4.2 Gm – diameter of <a href="/wiki/Algol_B" class="mw-redirect" title="Algol B">Algol B</a></li> <li>4.3 Gm – circumference of <a href="/wiki/Sun" title="Sun">Sun</a></li> <li>5.0 Gm – closest approach of <a href="/wiki/Comet_Halley" class="mw-redirect" title="Comet Halley">Comet Halley</a> to Earth, happened on 10 April 837</li> <li>5.0 Gm – (proposed) Size of the arms of the giant triangle shaped Michelson interferometer of the <a href="/wiki/Laser_Interferometer_Space_Antenna" title="Laser Interferometer Space Antenna">Laser Interferometer Space Antenna</a> (LISA) planned to start observations sometime in the 2030s.</li> <li>7.9 Gm – diameter of <a href="/wiki/Bellatrix" title="Bellatrix">Gamma Orionis</a>, a blue dwarf or blue giant</li> <li>9.0 Gm – estimated diameter of the <a href="/wiki/Event_horizon" title="Event horizon">event horizon</a> of <a href="/wiki/Sagittarius_A*" title="Sagittarius A*">Sagittarius A*</a>, the <a href="/wiki/Supermassive_black_hole" title="Supermassive black hole">supermassive black hole</a> in the center of the <a href="/wiki/Milky_Way" title="Milky Way">Milky Way</a> galaxy</li></ul> <div class="mw-heading mw-heading2"><h2 id="10_gigametres">10 gigametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=86" title="Edit section: 10 gigametres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e10m_comparison_Rigel,_Aldebaran,_and_smaller_-_antialiased_no_transparency.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/1e10m_comparison_Rigel%2C_Aldebaran%2C_and_smaller_-_antialiased_no_transparency.png/220px-1e10m_comparison_Rigel%2C_Aldebaran%2C_and_smaller_-_antialiased_no_transparency.png" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/11/1e10m_comparison_Rigel%2C_Aldebaran%2C_and_smaller_-_antialiased_no_transparency.png/330px-1e10m_comparison_Rigel%2C_Aldebaran%2C_and_smaller_-_antialiased_no_transparency.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/11/1e10m_comparison_Rigel%2C_Aldebaran%2C_and_smaller_-_antialiased_no_transparency.png/440px-1e10m_comparison_Rigel%2C_Aldebaran%2C_and_smaller_-_antialiased_no_transparency.png 2x" data-file-width="1024" data-file-height="768" /></a><figcaption>Rigel and Aldebaran (top left and right) compared to smaller stars, the Sun (very small dot in lower middle, with orbit of Mercury as yellow ellipse) and transparent sphere with radius of one light-minute</figcaption></figure> To help compare different <a href="/wiki/Distance" title="Distance">distances</a> this section lists lengths starting at 1010 <a href="/wiki/Metre" title="Metre">metres</a> (10 <a href="/wiki/1_gigametre" class="mw-redirect" title="1 gigametre">gigametres</a> (Gm) or 10 million <a href="/wiki/Kilometre" title="Kilometre">kilometres</a>, or 0.07 <a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical units</a>). <ul><li>10.4 Gm – diameter of Spica, an oval-shaped blue giant star and a <a href="/wiki/List_of_supernova_candidates" title="List of supernova candidates">nearby supernova candidate</a>.<a href="#cite_note-Tkachenko2016-179">[175]</a></li> <li>12.6 Gm – diameter of <a href="/wiki/Pollux_(star)" title="Pollux (star)">Pollux</a>, the closest <a href="/wiki/Red_giant" title="Red giant">red giant</a> <a href="/wiki/Star" title="Star">star</a> to the Sun.<a href="#cite_note-:2-180">[176]</a> It is a <a href="/wiki/Red_clump" title="Red clump">red clump</a> star fusing helium into carbon at its core.<a href="#cite_note-howes-181">[177]</a></li> <li>15 Gm – closest distance of <a href="/wiki/Comet_Hyakutake" title="Comet Hyakutake">Comet Hyakutake</a> from <a href="/wiki/Earth" title="Earth">Earth</a></li> <li>18 Gm – one <a href="/wiki/Light-minute" class="mw-redirect" title="Light-minute">light-minute</a> (see yellow sphere in right-hand diagram)</li> <li>24 Gm – radius of a <a href="/wiki/Heliostationary_orbit" class="mw-redirect" title="Heliostationary orbit">heliostationary orbit</a></li> <li>30.8568 Gm – 1 microparsec</li> <li>35 Gm – approximate diameter of <a href="/wiki/Arcturus" title="Arcturus">Arcturus</a>, a close red giant star.<a href="#cite_note-182">[178]</a> It is on the <a href="/wiki/Red_giant_branch" class="mw-redirect" title="Red giant branch">red giant branch</a>, fusing hydrogen into helium in a shell surrounding an inert helium core.<a href="#cite_note-howes-181">[177]</a></li> <li>46 Gm – <a href="/wiki/Apsis" title="Apsis">perihelion</a> distance of <a href="/wiki/Mercury_(planet)" title="Mercury (planet)">Mercury</a> (yellow ellipse on the right)</li> <li>55 Gm – 60,000-year <a href="/wiki/Perigee" class="mw-redirect" title="Perigee">perigee</a> of <a href="/wiki/Mars" title="Mars">Mars</a> (last achieved on 27 August 2003)</li> <li>58 Gm – average passing distance between <a href="/wiki/Earth" title="Earth">Earth</a> and Mars at the moment they overtake each other in their orbits</li> <li>61 Gm – diameter of <a href="/wiki/Aldebaran" title="Aldebaran">Aldebaran</a>, a red giant branch star (large star on right)<a href="#cite_note-aldiam-183">[179]</a></li> <li>70 Gm – <a href="/wiki/Apsis" title="Apsis">aphelion</a> distance of Mercury</li> <li>76 Gm – <a href="/wiki/Neso_(moon)" title="Neso (moon)">Neso</a>'s <a href="/wiki/Apsis" title="Apsis">apocentric</a> distance; greatest distance of a <a href="/wiki/Natural_satellite" title="Natural satellite">natural satellite</a> from its parent <a href="/wiki/Planet" title="Planet">planet</a> (<a href="/wiki/Neptune" title="Neptune">Neptune</a>)</li></ul> <div class="mw-heading mw-heading2"><h2 id="100_gigametres">100 gigametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=87" title="Edit section: 100 gigametres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e11m_comparison_R_Doradus_and_Betelgeuse,_and_smaller_-_antialiased_no_transparency.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/b/b5/1e11m_comparison_R_Doradus_and_Betelgeuse%2C_and_smaller_-_antialiased_no_transparency.png/220px-1e11m_comparison_R_Doradus_and_Betelgeuse%2C_and_smaller_-_antialiased_no_transparency.png" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/b5/1e11m_comparison_R_Doradus_and_Betelgeuse%2C_and_smaller_-_antialiased_no_transparency.png/330px-1e11m_comparison_R_Doradus_and_Betelgeuse%2C_and_smaller_-_antialiased_no_transparency.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/b5/1e11m_comparison_R_Doradus_and_Betelgeuse%2C_and_smaller_-_antialiased_no_transparency.png/440px-1e11m_comparison_R_Doradus_and_Betelgeuse%2C_and_smaller_-_antialiased_no_transparency.png 2x" data-file-width="1024" data-file-height="768" /></a><figcaption>From largest to smallest: Jupiter's orbit, red supergiant star Betelgeuse, Mars' orbit, Earth's orbit, star R Doradus, and orbits of Venus, Mercury. Inside R Doradus's depiction are the blue supergiant star Rigel and red giant star Aldebaran. The faint yellow glow around the Sun represents one light-minute. Click image to see more details and links to their scales.</figcaption></figure> To help compare distances at different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a> this section lists lengths starting at 1011 <a href="/wiki/Metre" title="Metre">metres</a> (100 <a class="mw-selflink-fragment" href="#1_gigametre">gigametre</a> or 100 million <a href="/wiki/Kilometre" title="Kilometre">kilometres</a> or 0.7 <a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical units</a>). <ul><li>103 Gm (0.69 au) – diameter of <a href="/wiki/Rigel" title="Rigel">Rigel</a><a href="#cite_note-:2-180">[176]</a></li> <li>109 Gm (0.7 au) – distance between Venus and the Sun</li> <li>149.6 Gm (93.0 million mi; 1.0 au) – average distance between the <a href="/wiki/Earth" title="Earth">Earth</a> and the Sun – the original definition of the <a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical unit</a></li> <li>199 Gm (1.3 au) – diameter of <a href="/wiki/Rho_Persei" title="Rho Persei">Rho Persei</a>, an <a href="/wiki/Asymptotic_giant_branch" title="Asymptotic giant branch">asymptotic giant branch</a> star, fusing carbon into neon in a shell surrounding an inert core.<a href="#cite_note-184">[180]</a></li> <li>228 Gm (1.5 au) – distance between <a href="/wiki/Mars" title="Mars">Mars</a> and the Sun</li> <li>248 Gm (1.7 au) – diameter of <a href="/wiki/Enif" class="mw-redirect" title="Enif">Enif</a>, a small <a href="/wiki/Red_supergiant" title="Red supergiant">red supergiant</a> star in the constellation <a href="/wiki/Pegasus_(constellation)" title="Pegasus (constellation)">Pegasus</a><a href="#cite_note-185">[181]</a></li> <li>280 Gm (1.9 au) – diameter of <a href="/wiki/Deneb" title="Deneb">Deneb</a>, a blue supergiant and the brightest star in the <a href="/wiki/Cygnus_(constellation)" title="Cygnus (constellation)">Cygnus constellation</a><a href="#cite_note-186">[182]</a></li> <li>511 Gm (3.4 au) – average diameter of <a href="/wiki/Mira" title="Mira">Mira</a>, a pulsating red giant and the progenitor of the <a href="/wiki/Mira_variables" class="mw-redirect" title="Mira variables">Mira variables</a>. It is an <a href="/wiki/Asymptotic_giant_branch" title="Asymptotic giant branch">asymptotic giant branch</a> star.<a href="#cite_note-187">[183]</a></li> <li>570 Gm (3.8 au) – length of the tail of <a href="/wiki/Comet_Hyakutake" title="Comet Hyakutake">Comet Hyakutake</a> measured by <a href="/wiki/Ulysses_(spacecraft)" title="Ulysses (spacecraft)">Ulysses</a>; the actual value could be much higher</li> <li>590 Gm (3.9 au) – diameter of the <a href="/wiki/Pistol_Star" title="Pistol Star">Pistol Star</a>, a blue <a href="/wiki/Hypergiant" title="Hypergiant">hypergiant</a> star<a href="#cite_note-188">[184]</a></li> <li>591 Gm (4.0 au) – minimum distance between the <a href="/wiki/Earth" title="Earth">Earth</a> and <a href="/wiki/Jupiter" title="Jupiter">Jupiter</a></li> <li>780 Gm (5.2 au) – distance between Jupiter and the Sun</li> <li>785 Gm (5.25 au) – diameter of <a href="/wiki/Rho_Cassiopeiae" title="Rho Cassiopeiae">Rho Cassiopeiae</a>, a rare <a href="/wiki/Yellow_hypergiant" title="Yellow hypergiant">yellow hypergiant</a> star<a href="#cite_note-189">[185]</a></li> <li>947 Gm (6.4 au) – diameter of <a href="/wiki/Antares" title="Antares">Antares A</a></li> <li>965 Gm (6.4 au) – maximum distance between the Earth and Jupiter</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_terametre">1 terametre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=88" title="Edit section: 1 terametre">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Terameter_group.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/Terameter_group.png/220px-Terameter_group.png" decoding="async" width="220" height="128" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/Terameter_group.png/330px-Terameter_group.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/66/Terameter_group.png/440px-Terameter_group.png 2x" data-file-width="960" data-file-height="558" /></a><figcaption>Eight things in the terametre group</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e12m_comparison_Kuiper_belt_and_smaller.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/92/1e12m_comparison_Kuiper_belt_and_smaller.png/220px-1e12m_comparison_Kuiper_belt_and_smaller.png" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/92/1e12m_comparison_Kuiper_belt_and_smaller.png/330px-1e12m_comparison_Kuiper_belt_and_smaller.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/92/1e12m_comparison_Kuiper_belt_and_smaller.png/440px-1e12m_comparison_Kuiper_belt_and_smaller.png 2x" data-file-width="1024" data-file-height="768" /></a><figcaption>Comparison of size of the Kuiper belt (large faint torus) with the star VY Canis Majoris (within Saturn's orbit), Betelgeuse (inside Jupiter's orbit) and R Doradus (small central red sphere) together with the orbits of Neptune and Uranus, to scale. The yellow ellipses represent the orbits of each planet and the dwarf planet Pluto.</figcaption></figure> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">terametre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">Tm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 1000000000000 <a href="/wiki/Metre" title="Metre">metres</a> (1012 m). To help compare different <a href="/wiki/Distance" title="Distance">distances</a>, this section lists lengths starting at 1012 <a href="/wiki/Metre" title="Metre">m</a> (1 <a href="#1_terametre">Tm</a> or 1 billion <a href="/wiki/Kilometre" title="Kilometre">km</a> or 6.7 <a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical units</a>). <ul><li>≈1 Tm – 6.7 au – diameter of the red supergiant <a href="/wiki/Betelgeuse" title="Betelgeuse">Betelgeuse</a> based on multiple angular diameter estimates<a href="#cite_note-190">[186]</a></li> <li>1.032 Tm – 6.9 au – diameter of the blue hypergiant <a href="/wiki/Eta_Carinae" title="Eta Carinae">Eta Carinae</a> (at optical depth 2/3)<a href="#cite_note-191">[187]</a></li> <li>1.079 Tm – 7.2 au – one <a href="/wiki/Light-hour" class="mw-redirect" title="Light-hour">light-hour</a></li> <li>1.4 Tm – 9.5 au – distance between <a href="/wiki/Saturn" title="Saturn">Saturn</a> and the <a href="/wiki/Sun" title="Sun">Sun</a></li> <li>1.47 Tm – 9.9 au – diameter of <a href="/wiki/HR_5171_A" class="mw-redirect" title="HR 5171 A">HR 5171 A</a>, a <a href="/wiki/Yellow_hypergiant" title="Yellow hypergiant">yellow hypergiant</a> star.<a href="#cite_note-192">[188]</a></li> <li>1.5 Tm – 10 au – estimated diameter of <a href="/wiki/VV_Cephei_A" class="mw-redirect" title="VV Cephei A">VV Cephei A</a>, a red hypergiant with a blue dwarf companion.<a href="#cite_note-bauer2008-193">[189]</a></li> <li>1.75 Tm – 11.7 au – estimated diameter of <a href="/wiki/Mu_Cephei" title="Mu Cephei">Mu Cephei</a>, a red supergiant (possibly hypergiant) among the <a href="/wiki/List_of_largest_stars" title="List of largest stars">largest-known stars</a>.<a href="#cite_note-levesqueetal20052-194">[190]</a></li> <li>2 Tm – 13.2 au – estimated diameter of <a href="/wiki/VY_Canis_Majoris" title="VY Canis Majoris">VY Canis Majoris</a>, a red hypergiant that is among the <a href="/wiki/List_of_largest_stars" title="List of largest stars">largest-known stars</a><a href="#cite_note-:0-195">[191]</a><a href="#cite_note-Wittkowski_vlti-196">[192]</a></li> <li>2.142 Tm – 14.3 au – estimated diameter of <a href="/wiki/WOH_G64" title="WOH G64">WOH G64</a>, the current largest star discovered in the <a href="/wiki/Large_Magellanic_Cloud" title="Large Magellanic Cloud">Large Magellanic Cloud</a>.</li> <li>2.9 Tm – 19.4 au – distance between <a href="/wiki/Uranus" title="Uranus">Uranus</a> and the Sun</li> <li>4.4 Tm – 29.4 au – <a href="/wiki/Apsis" title="Apsis">perihelion</a> distance of <a href="/wiki/Pluto" title="Pluto">Pluto</a></li> <li>4.5 Tm – 30.1 au – distance between <a href="/wiki/Neptune" title="Neptune">Neptune</a> and the Sun</li> <li>4.5 Tm – 30.1 au – inner radius of the <a href="/wiki/Kuiper_belt" title="Kuiper belt">Kuiper belt</a></li> <li>5.7 Tm – 38.1 au – perihelion distance of <a href="/wiki/136199_Eris" class="mw-redirect" title="136199 Eris">Eris</a></li> <li>6.0 Tm – 40.5 au – distance from <a href="/wiki/Earth" title="Earth">Earth</a> at which the <a href="/wiki/Pale_Blue_Dot" title="Pale Blue Dot">Pale Blue Dot</a> photograph was taken.</li> <li>7.3 Tm – 48.8 au – <a href="/wiki/Apsis" title="Apsis">aphelion</a> distance of <a href="/wiki/Pluto" title="Pluto">Pluto</a></li> <li>7.5 Tm – 50.1 au – outer radius of the <a href="/wiki/Kuiper_Belt" class="mw-redirect" title="Kuiper Belt">Kuiper Belt</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="10_terametres">10 terametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=89" title="Edit section: 10 terametres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e13m_comparison_Hale_Bopp_and_smaller_-_HQ_no_transparency.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/1e13m_comparison_Hale_Bopp_and_smaller_-_HQ_no_transparency.png/220px-1e13m_comparison_Hale_Bopp_and_smaller_-_HQ_no_transparency.png" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/1e13m_comparison_Hale_Bopp_and_smaller_-_HQ_no_transparency.png/330px-1e13m_comparison_Hale_Bopp_and_smaller_-_HQ_no_transparency.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/48/1e13m_comparison_Hale_Bopp_and_smaller_-_HQ_no_transparency.png/440px-1e13m_comparison_Hale_Bopp_and_smaller_-_HQ_no_transparency.png 2x" data-file-width="1024" data-file-height="768" /></a><figcaption>Sedna's orbit (left) is longer than 100 Tm, but other lengths are between 10 and 100 Tm: <a href="/wiki/Comet_Hale-Bopp" class="mw-redirect" title="Comet Hale-Bopp">Comet Hale-Bopp</a>'s orbit (lower, faint orange); one <a href="/wiki/Light-day" class="mw-redirect" title="Light-day">light-day</a> (yellow spherical shell with yellow Vernal point arrow as radius); the heliosphere's <a href="/wiki/Termination_shock" class="mw-redirect" title="Termination shock">termination shock</a> (blue shell); and other arrows show positions of <a href="/wiki/Voyager_1" title="Voyager 1">Voyager 1</a> (red) and <a href="/wiki/Pioneer_10" title="Pioneer 10">Pioneer 10</a> (green). Click on image for larger view and links to other scales.</figcaption></figure> To help compare different <a href="/wiki/Distance" title="Distance">distances</a> this section lists lengths starting at 1013 <a href="/wiki/Metre" title="Metre">m</a> (10 <a href="#1_terametre">Tm</a> or 10 billion <a href="/wiki/Kilometre" title="Kilometre">km</a> or 67 <a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical units</a>). <ul><li>10 Tm – 67 AU – diameter of a hypothetical <a href="/wiki/Quasi-star" title="Quasi-star">quasi-star</a></li> <li>11.1 Tm – 74.2 AU – distance that <a href="/wiki/Voyager_1" title="Voyager 1">Voyager 1</a> began detecting returning particles from <a href="/wiki/Termination_shock" class="mw-redirect" title="Termination shock">termination shock</a></li> <li>11.4 Tm – 76.2 AU – <a href="/wiki/Apsis" title="Apsis">perihelion</a> distance of <a href="/wiki/90377_Sedna" class="mw-redirect" title="90377 Sedna">90377 Sedna</a></li> <li>12.1 Tm – 70 to 90 AU – distance to <a href="/wiki/Termination_shock" class="mw-redirect" title="Termination shock">termination shock</a> (Voyager 1 crossed at 94 AU)</li> <li>12.9 Tm – 86.3 AU – distance to 90377 Sedna in March 2014</li> <li>13.2 Tm – 88.6 AU – distance to <a href="/wiki/Pioneer_11" title="Pioneer 11">Pioneer 11</a> in March 2014</li> <li>14.1 Tm – 94.3 AU – estimated radius of the <a href="/wiki/Solar_System" title="Solar System">Solar System</a></li> <li>14.4 Tm – 96.4 AU – distance to <a href="/wiki/136199_Eris" class="mw-redirect" title="136199 Eris">Eris</a> in March 2014 (now near its <a href="/wiki/Apsis" title="Apsis">aphelion</a>)</li> <li>15.1 Tm – 101 AU – distance to <a href="/wiki/Heliosphere#Heliosheath" title="Heliosphere">heliosheath</a></li> <li>16.5 Tm – 111 AU – distance to <a href="/wiki/Pioneer_10" title="Pioneer 10">Pioneer 10</a> as of March 2014</li> <li>16.6 Tm – 111.2 AU – distance to <a href="/wiki/Voyager_2" title="Voyager 2">Voyager 2</a> as of May 2016</li> <li>18 Tm – 123.5 AU – distance between the <a href="/wiki/Sun" title="Sun">Sun</a> to the farthest dwarf planet in the Solar System, the Farout <a href="/wiki/2018_VG18" title="2018 VG18">2018 VG18</a></li> <li>20.0 Tm – 135 AU – distance to <a href="/wiki/Voyager_1" title="Voyager 1">Voyager 1</a> as of May 2016</li> <li>20.6 Tm – 138 AU – distance to Voyager 1 as of late February 2017</li> <li>21.1 Tm – 141 AU – distance to Voyager 1 as of November 2017</li> <li>24.8 Tm – 166 AU – distance to Voyager 1 as of November 2024</li> <li>25.9 Tm – 173 AU – one <a href="/wiki/Light-day" class="mw-redirect" title="Light-day">light-day</a></li> <li>30.8568 Tm – 206.3 AU – 1 milliparsec</li> <li>55.7 Tm – 371 AU – aphelion distance of the <a href="/wiki/Comet" title="Comet">comet</a> <a href="/wiki/Hale-Bopp" class="mw-redirect" title="Hale-Bopp">Hale-Bopp</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="100_terametres">100 terametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=90" title="Edit section: 100 terametres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e14m_comparison_light_day_week_and_month.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/5/50/1e14m_comparison_light_day_week_and_month.png/220px-1e14m_comparison_light_day_week_and_month.png" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/50/1e14m_comparison_light_day_week_and_month.png/330px-1e14m_comparison_light_day_week_and_month.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/50/1e14m_comparison_light_day_week_and_month.png/440px-1e14m_comparison_light_day_week_and_month.png 2x" data-file-width="1024" data-file-height="768" /></a><figcaption>The largest yellow sphere indicates one light month distance from the Sun. Click the image for larger view, more details and links to other scales.</figcaption></figure> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1251242444"><table class="plainlinks metadata ambox mbox-small-left ambox-notice" role="presentation" style="width: auto;"><tbody><tr><td class="mbox-image"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/1/1d/Information_icon4.svg/20px-Information_icon4.svg.png" decoding="async" width="20" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/1/1d/Information_icon4.svg/30px-Information_icon4.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/1/1d/Information_icon4.svg/40px-Information_icon4.svg.png 2x" data-file-width="620" data-file-height="620" /></td><td class="mbox-text" style="width: auto;"><div class="mbox-text-span">This list is <a href="/wiki/Wikipedia:WikiProject_Lists#Incomplete_lists" title="Wikipedia:WikiProject Lists">incomplete</a>; you can help by <a class="external text" href="https://en.wikipedia.org/w/index.php?title=Orders_of_magnitude_(length)&action=edit">adding missing items</a>. (November 2012)</div></td></tr></tbody></table> To help compare different <a href="/wiki/Distance" title="Distance">distances</a> this section lists lengths starting at 1014 <a href="/wiki/Metre" title="Metre">m</a> (100 <a href="#1_terametre">Tm</a> or 100 billion <a href="/wiki/Kilometre" title="Kilometre">km</a> or 670 <a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical units</a>). <ul><li>140 Tm – 937 AU – <a href="/wiki/Apsis" title="Apsis">aphelion</a> distance of <a href="/wiki/90377_Sedna" class="mw-redirect" title="90377 Sedna">90377 Sedna</a></li> <li>172 Tm – 1150 AU – <a href="/wiki/Schwarzschild_radius" title="Schwarzschild radius">Schwarzschild diameter</a> of <a href="/wiki/H1821%2B643" title="H1821+643">H1821+643</a>, one of the most massive <a href="/wiki/Black_hole" title="Black hole">black holes</a> known</li> <li>181 Tm – 1210 AU – one <a href="/wiki/Light-week" class="mw-redirect" title="Light-week">light-week</a></li> <li>308.568 Tm – 2063 AU – 1 centiparsec</li> <li>757 Tm – 5059 AU – radius of the <a href="/wiki/Stingray_Nebula" title="Stingray Nebula">Stingray Nebula</a><a href="#cite_note-Parthasarathy2000-197">[193]</a></li> <li>777 Tm – 5180 AU – one <a href="/wiki/Light-month" class="mw-redirect" title="Light-month">light-month</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="1_petametre">1 petametre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=91" title="Edit section: 1 petametre">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e15m_comparison_cat%27s_eye_nebula_barnard_68_one_light_year.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/9/94/1e15m_comparison_cat%27s_eye_nebula_barnard_68_one_light_year.png/220px-1e15m_comparison_cat%27s_eye_nebula_barnard_68_one_light_year.png" decoding="async" width="220" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/94/1e15m_comparison_cat%27s_eye_nebula_barnard_68_one_light_year.png/330px-1e15m_comparison_cat%27s_eye_nebula_barnard_68_one_light_year.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/94/1e15m_comparison_cat%27s_eye_nebula_barnard_68_one_light_year.png/440px-1e15m_comparison_cat%27s_eye_nebula_barnard_68_one_light_year.png 2x" data-file-width="1280" data-file-height="1024" /></a><figcaption>Largest circle with yellow arrow indicates one <a href="/wiki/Light-year" title="Light-year">light-year</a> from <a href="/wiki/Sun" title="Sun">Sun</a>; <a href="/wiki/Cat%27s_Eye_Nebula" title="Cat's Eye Nebula">Cat's Eye Nebula</a> on left and <a href="/wiki/Barnard_68" title="Barnard 68">Barnard 68</a> in middle are depicted in front of <a href="/wiki/Comet_1910_A1" class="mw-redirect" title="Comet 1910 A1">Comet 1910 A1</a>'s orbit. Click image for larger view, details and links to other scales.</figcaption></figure> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">petametre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">Pm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 1015 <a href="/wiki/Metre" title="Metre">metres</a>. To help compare different <a href="/wiki/Distance" title="Distance">distances</a> this section lists lengths starting at 1015 <a href="/wiki/Metre" title="Metre">m</a> (1 Pm or 1 trillion <a href="/wiki/Kilometre" title="Kilometre">km</a> or 6685 <a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical units</a> (AU) or 0.11 <a href="/wiki/Light-year" title="Light-year">light-years</a>). <ul><li>1.0 Pm = 0.105702341 light-years</li> <li>1.9 Pm ± 0.5 Pm = 12,000 AU = 0.2 light-year radius of <a href="/wiki/Cat%27s_Eye_Nebula" title="Cat's Eye Nebula">Cat's Eye Nebula</a>'s inner core<a href="#cite_note-Cat_calc-198">[194]</a><a href="#cite_note-199">[195]</a></li> <li>3.08568 Pm = 20,626 AU = 1 deciparsec</li> <li>4.7 Pm = 30,000 AU = half-light-year diameter of <a href="/wiki/Bok_globule" title="Bok globule">Bok globule</a> <a href="/wiki/Barnard_68" title="Barnard 68">Barnard 68</a><a href="#cite_note-Szpir-200">[196]</a></li> <li>7.5 Pm – 50,000 AU – possible outer boundary of <a href="/wiki/Oort_cloud" title="Oort cloud">Oort cloud</a> (other estimates are 75,000 to 125,000 or even 189,000 <a href="/wiki/Astronomical_unit" title="Astronomical unit">AU</a> (1.18, 2, and 3 <a href="/wiki/Light-year" title="Light-year">light-years</a>, respectively))</li> <li>9.5 Pm – 63,241.1 AU – one <a href="/wiki/Light-year" title="Light-year">light-year</a>, the distance light travels in one year</li> <li>9.9 Pm – 66,000 AU – <a href="/wiki/Apsis" title="Apsis">aphelion</a> distance of the <a href="/wiki/C/1999_F1_(Catalina)" title="C/1999 F1 (Catalina)">C/1999 F1 (Catalina)</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="10_petametres">10 petametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=92" title="Edit section: 10 petametres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e16m_comparison_ten_light_years_bubble_nebula.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/6/61/1e16m_comparison_ten_light_years_bubble_nebula.png/220px-1e16m_comparison_ten_light_years_bubble_nebula.png" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/61/1e16m_comparison_ten_light_years_bubble_nebula.png/330px-1e16m_comparison_ten_light_years_bubble_nebula.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/61/1e16m_comparison_ten_light_years_bubble_nebula.png/440px-1e16m_comparison_ten_light_years_bubble_nebula.png 2x" data-file-width="1024" data-file-height="768" /></a><figcaption>Objects with size order of magnitude 1e16m: Ten light-years (94.6 <a href="/wiki/Petametre" class="mw-redirect" title="Petametre">Pm</a>) radius circle with yellow Vernal Point arrow; Bubble Nebula (NGC 7635), left; Dumbbell Nebula (NGC 6853), right; one light-year shell lower right with the smaller Cat's Eye Nebula (NGC_6543) and Barnard 68 adjacent.</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e16m_comparison_10_light_years_sirius.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/10/1e16m_comparison_10_light_years_sirius.png/220px-1e16m_comparison_10_light_years_sirius.png" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/10/1e16m_comparison_10_light_years_sirius.png/330px-1e16m_comparison_10_light_years_sirius.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/10/1e16m_comparison_10_light_years_sirius.png/440px-1e16m_comparison_10_light_years_sirius.png 2x" data-file-width="1024" data-file-height="768" /></a><figcaption>1e16m lengths: Ten light-years (94.6 <a href="/wiki/Petametre" class="mw-redirect" title="Petametre">Pm</a>) yellow shell; Sirius below right; BL Ceti below left; Proxima and Alpha Centauri upper right; light-year shell with Comet 1910 A1's orbit inside top right</figcaption></figure> To help compare different distances this section lists lengths starting at 1016 <a href="/wiki/Metre" title="Metre">m</a> (10 <a href="#1_petametre">Pm</a> or 66,800 <a href="/wiki/Astronomical_unit" title="Astronomical unit">AU</a>, 1.06 <a href="/wiki/Light-year" title="Light-year">light-years</a>). <ul><li>15 Pm – 1.59 light-years – possible outer radius of <a href="/wiki/Oort_cloud" title="Oort cloud">Oort cloud</a></li> <li>20 Pm – 2.11 light-years – maximum extent of influence of the Sun's <a href="/wiki/Gravitational_field" title="Gravitational field">gravitational field</a>[<a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed">citation needed</a>]</li> <li>30.9 Pm – 3.26 light-years – 1 <a href="/wiki/Parsec" title="Parsec">parsec</a></li> <li>39.9 Pm – 4.22 light-years – distance to <a href="/wiki/Proxima_Centauri" title="Proxima Centauri">Proxima Centauri</a> (nearest star to <a href="/wiki/Sun" title="Sun">Sun</a>)</li> <li>81.3 Pm – 8.59 light-years – distance to <a href="/wiki/Sirius" title="Sirius">Sirius</a></li> <li>94.6 Pm – 1 light-decade</li></ul> <div class="mw-heading mw-heading2"><h2 id="100_petametres">100 petametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=93" title="Edit section: 100 petametres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e17m_comparison_100_light_years_nebula_clusters.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/1e17m_comparison_100_light_years_nebula_clusters.png/220px-1e17m_comparison_100_light_years_nebula_clusters.png" decoding="async" width="220" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/1/15/1e17m_comparison_100_light_years_nebula_clusters.png/330px-1e17m_comparison_100_light_years_nebula_clusters.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/1/15/1e17m_comparison_100_light_years_nebula_clusters.png/440px-1e17m_comparison_100_light_years_nebula_clusters.png 2x" data-file-width="1280" data-file-height="1024" /></a><figcaption>Lengths with order of magnitude 1e17m: yellow Vernal Point arrow traces hundred light-year radius circle with smaller ten light-year circle at right; globular cluster Messier 5 in background; 12 light-year radius Orion Nebula middle right; 50-light-year-wide view of the Carina Nebula bottom left; Pleiades cluster and Bubble nebula with similar diameters each around 10 light-years bottom right; grey arrows show distances from Sun to stars Aldebaran (65 light-years) and Vega (25 light-years)</figcaption></figure> To help compare different <a href="/wiki/Distance" title="Distance">distances</a> this section lists lengths between 1017 <a href="/wiki/Metre" title="Metre">m</a> (100 <a href="#1_petametre">Pm</a> or 11 <a href="/wiki/Light-year" title="Light-year">light-years</a>) and 1018 m (106 light-years). <ul><li>110 Pm – 12 light-years – Distance to <a href="/wiki/Tau_Ceti" title="Tau Ceti">Tau Ceti</a></li> <li>230 Pm – 24 light-years – Diameter of the <a href="/wiki/Orion_Nebula" title="Orion Nebula">Orion Nebula</a><a href="#cite_note-apj667-201">[197]</a><a href="#cite_note-202">[198]</a></li> <li>240 Pm – 25 light-years – Distance to <a href="/wiki/Vega" title="Vega">Vega</a></li> <li>260 Pm – 27 light-years – Distance to <a href="/wiki/Beta_Canum_Venaticorum" title="Beta Canum Venaticorum">Chara</a>, a star approximately as bright as the Sun. Its faintness gives an idea how the <a href="/wiki/Sun" title="Sun">Sun</a> would appear when viewed from this distance.</li> <li>308.568 Tm – 32.6 light-years – 1 dekaparsec</li> <li>350 Pm – 37 light-years – distance to <a href="/wiki/Arcturus" title="Arcturus">Arcturus</a></li> <li>373.1 Pm – 39.44 light-years – distance to <a href="/wiki/TRAPPIST-1" title="TRAPPIST-1">TRAPPIST-1</a>, a star recently discovered to have 7 planets around it</li> <li>400 Pm – 42 light-years – distance to <a href="/wiki/Capella_(star)" class="mw-redirect" title="Capella (star)">Capella</a></li> <li>620 Pm – 65 light-years – distance to <a href="/wiki/Aldebaran" title="Aldebaran">Aldebaran</a></li> <li>750 Pm – 79.36 light-years – distance to <a href="/wiki/Regulus" title="Regulus">Regulus</a></li> <li>900 Pm – 92.73 light-years – distance to <a href="/wiki/Algol" title="Algol">Algol</a></li> <li>946 Pm – 1 light-century</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_exametre">1 exametre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=94" title="Edit section: 1 exametre">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:1e18m_comparison_1000_light_years_nebula_clusters.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/8/85/1e18m_comparison_1000_light_years_nebula_clusters.png/220px-1e18m_comparison_1000_light_years_nebula_clusters.png" decoding="async" width="220" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/85/1e18m_comparison_1000_light_years_nebula_clusters.png/330px-1e18m_comparison_1000_light_years_nebula_clusters.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/85/1e18m_comparison_1000_light_years_nebula_clusters.png/440px-1e18m_comparison_1000_light_years_nebula_clusters.png 2x" data-file-width="1280" data-file-height="1024" /></a><figcaption>Lengths with order of magnitude 1e18m: thousand light-year radius circle with yellow arrow and 100 light-year circle at right with globular cluster Messier 5 within and Carina Nebula in front; globular cluster Omega Centauri to left of both; part of the 1,400-light-year-wide Tarantula Nebula fills the background</figcaption></figure> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">exametre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">Em) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 1018 <a href="/wiki/Metre" title="Metre">metres</a>. To help compare different <a href="/wiki/Distance" title="Distance">distances</a> this section lists lengths between 1018 <a href="/wiki/Metre" title="Metre">m</a> (1 <a href="/wiki/Exametre" class="mw-redirect" title="Exametre">Em</a> or 105.7 <a href="/wiki/Light-year" title="Light-year">light-years</a>) and 1019 m (10 Em or 1,057 light-years). <ul><li>1.2 Em – 129 light-years – diameter of <a href="/wiki/Messier_13" title="Messier 13">Messier 13</a> (a typical <a href="/wiki/Globular_cluster" title="Globular cluster">globular cluster</a>)</li> <li>1.6 Em – 172 ± 12.5 light-years – diameter of <a href="/wiki/Omega_Centauri" title="Omega Centauri">Omega Centauri</a> (one of the largest-known <a href="/wiki/Globular_cluster" title="Globular cluster">globular clusters</a>, perhaps containing over a million <a href="/wiki/Star" title="Star">stars</a>)<a href="#cite_note-203">[199]</a><a href="#cite_note-vandeVenetal2006-204">[200]</a></li> <li>3.08568 Em – 326.1 light-years – 1 hectoparsec</li> <li>3.1 Em – 310 light-years – distance to <a href="/wiki/Canopus_(star)" class="mw-redirect" title="Canopus (star)">Canopus</a> according to <a href="/wiki/Hipparcos" title="Hipparcos">Hipparcos</a><a href="#cite_note-van_Leeuwen2007-205">[201]</a></li> <li>3.9 Em – 410 light-years – distance to <a href="/wiki/Betelgeuse" title="Betelgeuse">Betelgeuse</a> according to Hipparcos<a href="#cite_note-206">[202]</a></li> <li>6.2 Em – 650 light-years – distance to the <a href="/wiki/Helix_Nebula" title="Helix Nebula">Helix Nebula</a>, located in the constellation <a href="/wiki/Aquarius_(constellation)" title="Aquarius (constellation)">Aquarius</a><a href="#cite_note-Harrisetal2007-207">[203]</a></li> <li>8.2 Em – 860 light-years – distance to <a href="/wiki/Rigel" title="Rigel">Rigel</a> according to Hipparcos<a href="#cite_note-van_Leeuwen2007-205">[201]</a></li> <li>9.4 Em — 1 light-millennium – 1000 light-years</li></ul> <div class="mw-heading mw-heading2"><h2 id="10_exametres">10 exametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=95" title="Edit section: 10 exametres">edit</a>]</div> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Distance" title="Distance">distances</a> starting at 10 <a href="/wiki/Exametre" class="mw-redirect" title="Exametre">Em</a> (1019 <a href="/wiki/Metre" title="Metre">m</a> or 1,100 <a href="/wiki/Light-year" title="Light-year">light-years</a>). <ul><li>10.6 Em – 1,120 light-years – distance to <a href="/wiki/WASP-96b" title="WASP-96b">WASP-96b</a></li> <li>13 Em – 1,300 light-years – distance to the <a href="/wiki/Orion_Nebula" title="Orion Nebula">Orion Nebula</a><a href="#cite_note-208">[204]</a></li> <li>14 Em – 1,500 light-years – approximate thickness of the <a href="/wiki/Galactic_plane" title="Galactic plane">plane</a> of the <a href="/wiki/Milky_Way" title="Milky Way">Milky Way</a> <a href="/wiki/Galaxy" title="Galaxy">galaxy</a> at the <a href="/wiki/Sun" title="Sun">Sun</a>'s location</li> <li>14.2 Em – 1,520 light-years – diameter of the <a href="/wiki/NGC_604" title="NGC 604">NGC 604</a></li> <li>30.8568 Em – 3,261.6 light-years – 1 <a href="/wiki/Parsec" title="Parsec">kiloparsec</a></li> <li>31 Em – 3,200 light-years – distance to <a href="/wiki/Deneb" title="Deneb">Deneb</a> according to <a href="/wiki/Hipparcos" title="Hipparcos">Hipparcos</a></li> <li>46 Em – 4,900 light-years – distance to <a href="/wiki/OGLE-TR-56" title="OGLE-TR-56">OGLE-TR-56</a>, the first <a href="/wiki/Extrasolar_planet" class="mw-redirect" title="Extrasolar planet">extrasolar planet</a> discovered using the <a href="/wiki/Extrasolar_planet#Transit_method" class="mw-redirect" title="Extrasolar planet">transit method</a></li> <li>47 Em – 5,000 light-years – distance to the <a href="/wiki/Boomerang_nebula" class="mw-redirect" title="Boomerang nebula">Boomerang nebula</a>, coldest place known (<a href="/wiki/1_E0_K" class="mw-redirect" title="1 E0 K">1 K</a>)</li> <li>53 Em – 5,600 light-years – distance to the <a href="/wiki/Globular_cluster" title="Globular cluster">globular cluster</a> <a href="/wiki/Messier_4" title="Messier 4">M4</a> and the <a href="/wiki/Extrasolar_planet" class="mw-redirect" title="Extrasolar planet">extrasolar planet</a> <a href="/wiki/PSR_B1620-26_b" class="mw-redirect" title="PSR B1620-26 b">PSR B1620-26 b</a> within it</li> <li>61 Em – 6,500 light-years – distance to <a href="/wiki/Perseus_Spiral_Arm" class="mw-redirect" title="Perseus Spiral Arm">Perseus Spiral Arm</a> (next spiral arm out in the Milky Way galaxy)</li> <li>71 Em – 7,500 light-years – distance to <a href="/wiki/Eta_Carinae" title="Eta Carinae">Eta Carinae</a></li> <li>94.6073 Em – 1 light-decamillennium = 10,000 light-years</li></ul> <div class="mw-heading mw-heading2"><h2 id="100_exametres">100 exametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=96" title="Edit section: 100 exametres">edit</a>]</div> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Distance" title="Distance">distances</a> starting at 100 <a href="/wiki/Exametre" class="mw-redirect" title="Exametre">Em</a> (1020 <a href="/wiki/Metre" title="Metre">m</a> or 11,000 <a href="/wiki/Light-year" title="Light-year">light-years</a>). <ul><li>150 Em – 16,000 light-years – diameter of the <a href="/wiki/Small_Magellanic_Cloud" title="Small Magellanic Cloud">Small Magellanic Cloud</a>, a <a href="/wiki/Dwarf_galaxy" title="Dwarf galaxy">dwarf galaxy</a> orbiting the <a href="/wiki/Milky_Way" title="Milky Way">Milky Way</a></li> <li>200 Em – 21,500 light-years – distance to <a href="/wiki/OGLE-2005-BLG-390Lb" title="OGLE-2005-BLG-390Lb">OGLE-2005-BLG-390Lb</a></li> <li>240 Em – 25,000 light-years – distance to the <a href="/wiki/Canis_Major_Dwarf_Galaxy" class="mw-redirect" title="Canis Major Dwarf Galaxy">Canis Major Dwarf Galaxy</a></li> <li>260 Em – 28,000 light-years – distance to the center of the <a href="/wiki/Milky_Way" title="Milky Way">Galaxy</a></li> <li>400 Em – 48,000 light years – diameter of the <a href="/wiki/Fireworks_Galaxy" class="mw-redirect" title="Fireworks Galaxy">Fireworks Galaxy</a></li> <li>830 Em – 88,000 light-years – distance to the <a href="/wiki/Sagittarius_Dwarf_Elliptical_Galaxy" class="mw-redirect" title="Sagittarius Dwarf Elliptical Galaxy">Sagittarius Dwarf Elliptical Galaxy</a></li> <li>946 Em – 1 light-centum-millennium = 100,000 light-years</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_zettametre">1 zettametre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=97" title="Edit section: 1 zettametre">edit</a>]</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">zettametre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">Zm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 1021 <a href="/wiki/Metre" title="Metre">metres</a>.<a href="#cite_note-bipm.org-59">[56]</a> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Distance" title="Distance">distances</a> starting at 1 <a href="/wiki/Zettametre" class="mw-redirect" title="Zettametre">Zm</a> (1021 <a href="/wiki/Metre" title="Metre">m</a> or 110,000 <a href="/wiki/Light-year" title="Light-year">light-years</a>). <ul><li>1.7 Zm – 179,000 light-years – distance to the <a href="/wiki/Large_Magellanic_Cloud" title="Large Magellanic Cloud">Large Magellanic Cloud</a>, largest <a href="/wiki/Satellite_galaxy" title="Satellite galaxy">satellite galaxy</a> of the <a href="/wiki/Milky_Way" title="Milky Way">Milky Way</a></li> <li><1.9 Zm – <200,000 light-years – revised estimated diameter of the disc of the <a href="/wiki/Milky_Way" title="Milky Way">Milky Way Galaxy</a>. The size was previously thought to be half of this.</li> <li>2.0 Zm – 210,000 light-years – distance to the <a href="/wiki/Small_Magellanic_Cloud" title="Small Magellanic Cloud">Small Magellanic Cloud</a></li> <li>2.8 Zm – 300,000 light-years – distance to the <a href="/wiki/Intergalactic_Wanderer" class="mw-redirect" title="Intergalactic Wanderer">Intergalactic Wanderer</a>, one of the most distant <a href="/wiki/Globular_cluster" title="Globular cluster">globular clusters</a> of Milky Way</li> <li>8.5 Zm – 900,000 light-years – distance to the <a href="/wiki/Leo_I_Dwarf_Galaxy" class="mw-redirect" title="Leo I Dwarf Galaxy">Leo I Dwarf Galaxy</a>, farthest-known <a href="/wiki/Milky_Way" title="Milky Way">Milky Way</a> satellite <a href="/wiki/Galaxy" title="Galaxy">galaxy</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="10_zettametres">10 zettametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=98" title="Edit section: 10 zettametres">edit</a>]</div> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Distance" title="Distance">distances</a> starting at 10 <a href="/wiki/Zettametre" class="mw-redirect" title="Zettametre">Zm</a> (1022 <a href="/wiki/Metre" title="Metre">m</a> or 1.1 million <a href="/wiki/Light-year" title="Light-year">light-years</a>). <ul><li>24 Zm – 2.5 million light-years – distance to the <a href="/wiki/Andromeda_Galaxy" title="Andromeda Galaxy">Andromeda Galaxy</a>, the nearest major <a href="/wiki/Galaxy" title="Galaxy">galaxy</a>.</li> <li>30.8568 Zm – 3.2616 million light-years – 1 <a href="/wiki/Parsec" title="Parsec">megaparsec</a></li> <li>40 Zm – 4.2 million light-years – distance to the <a href="/wiki/IC_10" title="IC 10">IC 10</a>, a distant member of the <a href="/wiki/Local_Group" title="Local Group">Local Group</a> of <a href="/wiki/Galaxy" title="Galaxy">galaxies</a></li> <li>49.2 Zm – 5.2 million light-years – width of the <a href="/wiki/Local_Group" title="Local Group">Local Group</a> of <a href="/wiki/Galaxy" title="Galaxy">galaxies</a></li> <li>95 Zm – 10 million light-years – distance to the <a href="/wiki/Sculptor_Galaxy" title="Sculptor Galaxy">Sculptor Galaxy</a> in the <a href="/wiki/Sculptor_Group" title="Sculptor Group">Sculptor Group</a> of galaxies</li> <li>95 Zm – 10 million light-years – distance to the <a href="/wiki/Maffei_1" title="Maffei 1">Maffei 1</a>, the nearest giant <a href="/wiki/Elliptical_galaxy" title="Elliptical galaxy">elliptical galaxy</a> in the <a href="/wiki/Maffei_1_group_of_galaxies" class="mw-redirect" title="Maffei 1 group of galaxies">Maffei 1 Group</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="100_zettametres">100 zettametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=99" title="Edit section: 100 zettametres">edit</a>]</div> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Distance" title="Distance">distances</a> starting at 100 <a href="/wiki/Zettametre" class="mw-redirect" title="Zettametre">Zm</a> (1023 <a href="/wiki/Metre" title="Metre">m</a> or 11 million <a href="/wiki/Light-year" title="Light-year">light-years</a>). <ul><li>140 Zm – 15 million light-years – distance to <a href="/wiki/Centaurus_A" title="Centaurus A">Centaurus A</a> galaxy</li> <li>250 Zm – 27 million light-years – distance to the <a href="/wiki/Pinwheel_Galaxy" title="Pinwheel Galaxy">Pinwheel Galaxy</a></li> <li>280 Zm – 30 million light-years – distance to the <a href="/wiki/Sombrero_Galaxy" title="Sombrero Galaxy">Sombrero Galaxy</a></li> <li>570 Zm – 60 million light-years – approximate distance to the <a href="/wiki/Virgo_cluster" class="mw-redirect" title="Virgo cluster">Virgo cluster</a>, nearest <a href="/wiki/Galaxy_cluster" title="Galaxy cluster">galaxy cluster</a></li> <li>620 Zm – 65 million light-years – approximate distance to the <a href="/wiki/Fornax_cluster" class="mw-redirect" title="Fornax cluster">Fornax cluster</a></li> <li>800 Zm – 85 million light-years – approximate distance to the <a href="/wiki/Eridanus_cluster" class="mw-redirect" title="Eridanus cluster">Eridanus cluster</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="1_yottametre">1 yottametre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=100" title="Edit section: 1 yottametre">edit</a>]</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">yottametre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">Ym) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 1024 <a href="/wiki/Metre" title="Metre">metres</a>.<a href="#cite_note-bipm.org-59">[56]</a> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Distance" title="Distance">distances</a> starting at 1 Ym (1024 <a href="/wiki/Metre" title="Metre">m</a> or 105.702 million <a href="/wiki/Light-year" title="Light-year">light-years</a>). <ul><li>1.2 Ym – 127 million light-years – distance to the closest observed <a href="/wiki/Gamma_ray_burst" class="mw-redirect" title="Gamma ray burst">gamma ray burst</a> <a href="/wiki/GRB_980425" title="GRB 980425">GRB 980425</a></li> <li>1.3 Ym – 137 million light-years – distance to the <a href="/wiki/Centaurus_Cluster" title="Centaurus Cluster">Centaurus Cluster</a> of <a href="/wiki/Galaxies" class="mw-redirect" title="Galaxies">galaxies</a>, the nearest large <a href="/wiki/Supercluster" title="Supercluster">supercluster</a></li> <li>1.9 Ym – 201 million light-years – diameter of the <a href="/wiki/Local_Supercluster" class="mw-redirect" title="Local Supercluster">Local Supercluster</a></li> <li>2.17 Ym – 1 light-galactic-years – 230 million light-years</li> <li>2.3 Ym – 225 to 250 million light-years – distance light travels in vacuum in one <a href="/wiki/Galactic_year" title="Galactic year">galactic year</a></li> <li>2.8 Ym – 296 million light-years – distance to the <a href="/wiki/Coma_Cluster" title="Coma Cluster">Coma Cluster</a></li> <li>3.15 Ym – 330 million light years – diameter of the <a href="/wiki/Bo%C3%B6tes_Void" title="Boötes Void">Boötes Void</a></li> <li>3.2 Ym – 338 million light-years – distance to <a href="/wiki/Stephan%27s_Quintet" title="Stephan's Quintet">Stephan's Quintet</a></li> <li>4.7 Ym – 496 million light-years – length of the <a href="/wiki/Great_Wall_(astronomy)" class="mw-redirect" title="Great Wall (astronomy)">CfA2 Great Wall</a>, one of the largest observed superstructures in the <a href="/wiki/Universe" title="Universe">Universe</a></li> <li>6.1 Ym – 645 million light-years – distance to the <a href="/wiki/Shapley_Supercluster" title="Shapley Supercluster">Shapley Supercluster</a></li> <li>9.5 Ym – 996 million light-years – diameter of the <a href="/wiki/Eridanus_Supervoid" class="mw-redirect" title="Eridanus Supervoid">Eridanus Supervoid</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="10_yottametres">10 yottametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=101" title="Edit section: 10 yottametres">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Superclusters_atlasoftheuniverse.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Superclusters_atlasoftheuniverse.gif/220px-Superclusters_atlasoftheuniverse.gif" decoding="async" width="220" height="206" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/46/Superclusters_atlasoftheuniverse.gif/330px-Superclusters_atlasoftheuniverse.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/46/Superclusters_atlasoftheuniverse.gif/440px-Superclusters_atlasoftheuniverse.gif 2x" data-file-width="640" data-file-height="600" /></a><figcaption>The universe within one billion light-years of Earth</figcaption></figure> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Distance" title="Distance">distances</a> starting at 10 <a href="/wiki/Yottametre" class="mw-redirect" title="Yottametre">Ym</a> (1025 <a href="/wiki/Metre" title="Metre">m</a> or 1.1 billion <a href="/wiki/Light-year" title="Light-year">light-years</a>). At this scale, expansion of the <a href="/wiki/Universe" title="Universe">universe</a> becomes significant. Distance of these objects are derived from their measured <a href="/wiki/Redshift" title="Redshift">redshifts</a>, which depends on the <a href="/wiki/Physical_cosmology" title="Physical cosmology">cosmological</a> models used. <ul><li>13 Ym – 1.37 billion light-years – length of the <a href="/wiki/South_Pole_Wall" title="South Pole Wall">South Pole Wall</a></li> <li>13 Ym – 1.38 billion light-years – length of the <a href="/wiki/Sloan_Great_Wall" title="Sloan Great Wall">Sloan Great Wall</a></li> <li>18 Ym – redshift 0.16 – 1.9 billion light-years – distance to the <a href="/wiki/Quasar" title="Quasar">quasar</a> <a href="/wiki/3C_273" title="3C 273">3C 273</a> (<a href="/wiki/Distance_measures_(cosmology)#Types_of_distance_measures" class="mw-redirect" title="Distance measures (cosmology)">light travel distance</a>)</li> <li>30.8568 Ym – 3.2616 billion light-years – 1 gigaparsec</li> <li>31.2204106 Ym − 3.3 billion light-years − length of <a href="/wiki/The_Giant_Arc" class="mw-redirect" title="The Giant Arc">The Giant Arc</a>, a large cosmic structure discovered in 2021</li> <li>33 Ym – 3.5 billion light-years – maximum distance of the <a href="/wiki/2dF_Galaxy_Redshift_Survey" title="2dF Galaxy Redshift Survey">2dF Galaxy Redshift Survey</a> (light travel distance)</li> <li>37.8 Ym – 4 billion light-years – length of the <a href="/wiki/Huge-LQG" title="Huge-LQG">Huge-LQG</a></li> <li>75 Ym – redshift 0.95 – 8 billion light-years – approximate distance to the <a href="/wiki/Supernova" title="Supernova">supernova</a> SN 2002dd in the <a href="/wiki/Hubble_Deep_Field_North" class="mw-redirect" title="Hubble Deep Field North">Hubble Deep Field North</a> (light travel distance)</li> <li>85 Ym – redshift 1.6 – 9 billion light-years – approximate distance to the <a href="/wiki/Gamma-ray_burst" title="Gamma-ray burst">gamma-ray burst</a> <a href="/wiki/GRB_990123" title="GRB 990123">GRB 990123</a> (light travel distance)</li> <li>94.6 Ym – 10 billion light-years – approximate distance to quasar OQ172</li> <li>94.6 Ym – 10 billion light-years – length of the <a href="/wiki/Hercules%E2%80%93Corona_Borealis_Great_Wall" title="Hercules–Corona Borealis Great Wall">Hercules–Corona Borealis Great Wall</a>, one of the <a href="/wiki/List_of_largest_cosmic_structures" title="List of largest cosmic structures">largest and most massive-known cosmic structures known</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="100_yottametres">100 yottametres</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=102" title="Edit section: 100 yottametres">edit</a>]</div> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Distance" title="Distance">distances</a> starting at 100 <a href="/wiki/Yottametre" class="mw-redirect" title="Yottametre">Ym</a> (1026 <a href="/wiki/Metre" title="Metre">m</a> or 11 billion <a href="/wiki/Light-year" title="Light-year">light-years</a>). At this scale, expansion of the <a href="/wiki/Universe" title="Universe">universe</a> becomes significant. Distance of these objects are derived from their measured <a href="/wiki/Redshift" title="Redshift">redshifts</a>, which depend on the <a href="/wiki/Physical_cosmology" title="Physical cosmology">cosmological</a> models used. <ul><li>124 Ym – redshift 7.54 – 13.1 billion light-years – <a href="/wiki/Distance_measures_(cosmology)#Types_of_distance_measures" class="mw-redirect" title="Distance measures (cosmology)">light travel distance</a> (LTD) to the <a href="/wiki/Quasar" title="Quasar">quasar</a> <a href="/wiki/ULAS_J1342%2B0928" title="ULAS J1342+0928">ULAS J1342+0928</a>, the <a href="/wiki/List_of_quasars#Most_distant_quasars" title="List of quasars">most distant-known quasar</a> as of 2017</li> <li>130 Ym – redshift 1,000 – 13.8 billion light-years – distance (LTD) to the source of the <a href="/wiki/Cosmic_microwave_background" title="Cosmic microwave background">cosmic microwave background radiation</a>; radius of the observable <a href="/wiki/Universe" title="Universe">universe</a> measured as a LTD</li> <li>260 Ym – 27.4 billion light-years – diameter of the observable universe (double LTD)</li> <li>440 Ym – 46 billion light-years – radius of the universe measured as a <a href="/wiki/Comoving_distance" class="mw-redirect" title="Comoving distance">comoving distance</a></li> <li>590 Ym – 62 billion light-years – cosmological <a href="/wiki/Event_horizon" title="Event horizon">event horizon</a>: the largest comoving distance from which light will ever reach us (the observer) at any time in the future</li> <li>886.48 Ym – 93.7 billion light-years – the diameter of the <a href="/wiki/Observable_universe" title="Observable universe">observable universe</a> (twice the <a href="/wiki/Particle_horizon" title="Particle horizon">particle horizon</a>); however, there might be unobserved distances that are even greater.</li></ul> <div class="mw-heading mw-heading2"><h2 id="1_ronnametre">1 ronnametre</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=103" title="Edit section: 1 ronnametre">edit</a>]</div> The <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">ronnametre (<a href="/wiki/SI" class="mw-redirect" title="SI">SI</a> symbol: <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238216509">Rm) is a <a href="/wiki/Units_of_measurement" class="mw-redirect" title="Units of measurement">unit</a> of <a href="/wiki/Length" title="Length">length</a> in the <a href="/wiki/Metric_system" title="Metric system">metric system</a> equal to 1027 <a href="/wiki/Metre" title="Metre">metres</a>.<a href="#cite_note-bipm.org-59">[56]</a> To help compare different <a href="/wiki/Orders_of_magnitude" class="mw-redirect" title="Orders of magnitude">orders of magnitude</a>, this section lists <a href="/wiki/Distance" title="Distance">distances</a> starting at 1 Rm (1027 <a href="/wiki/Metre" title="Metre">m</a> or 105.7 billion <a href="/wiki/Light-year" title="Light-year">light-years</a>). At this scale, expansion of the <a href="/wiki/Universe" title="Universe">universe</a> becomes significant. Distance of these objects are derived from their measured <a href="/wiki/Redshift" title="Redshift">redshifts</a>, which depend on the <a href="/wiki/Physical_cosmology" title="Physical cosmology">cosmological</a> models used. <ul><li>>1 Rm – >105.7 billion light-years – size of universe beyond the <a href="/wiki/Observable_universe" title="Observable universe">cosmic light horizon</a>, depending on its curvature; if the curvature is zero (i.e. the universe is spatially flat), the value can be <a href="/wiki/Infinity#Cosmology" title="Infinity">infinite</a> (see <a href="/wiki/Shape_of_the_universe" title="Shape of the universe">Shape of the universe</a>) as previously mentioned.</li> <li>2.764 Rm - 292.2 billion light-years – circumference of the observable universe, as it is in the shape of a sphere.</li> <li>≈101010122<a href="/wiki/Light-year" title="Light-year">light-years</a> – the possible size of the universe after <a href="/wiki/Cosmological_inflation" class="mw-redirect" title="Cosmological inflation">cosmological inflation</a>.</li> <li>≈∞ light-years – theoretical size of the <a href="/wiki/Multiverse" title="Multiverse">Multiverse</a> if it exists.</li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=104" title="Edit section: See also">edit</a>]</div> <ul><li><a href="/wiki/List_of_examples_of_lengths" class="mw-redirect" title="List of examples of lengths">List of examples of lengths</a></li> <li><a href="/wiki/Fermi_problem" title="Fermi problem">Fermi problem</a></li> <li><a href="/wiki/Scale_(analytical_tool)" title="Scale (analytical tool)">Scale (analytical tool)</a></li> <li><a href="/wiki/Spatial_scale" title="Spatial scale">Spatial scale</a></li> <li><a href="/wiki/The_Scale_of_the_Universe" title="The Scale of the Universe">The Scale of the Universe</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Notes">Notes</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=105" title="Edit section: Notes">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div class="mw-references-wrap"><ol class="references"> <li id="cite_note-Note_Physics_Factbook-1"><a href="#cite_ref-Note_Physics_Factbook_1-0">^</a> The <a href="/wiki/Diameter" title="Diameter">diameter</a> of human hair ranges from 17 to 181 μm <style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFLey1999" class="citation web cs1">Ley, Brian (1999). Elert, Glenn (ed.). <a rel="nofollow" class="external text" href="https://hypertextbook.com/facts/1999/BrianLey.shtml">"Diameter of a human hair"</a>. The Physics Factbook. Retrieved 8 December 2018.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=The+Physics+Factbook&rft.atitle=Diameter+of+a+human+hair&rft.date=1999&rft.aulast=Ley&rft.aufirst=Brian&rft_id=https%3A%2F%2Fhypertextbook.com%2Ffacts%2F1999%2FBrianLey.shtml&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> </li> <li id="cite_note-Asteroid-planet?-38">^ <a href="#cite_ref-Asteroid-planet?_38-0">a</a> <a href="#cite_ref-Asteroid-planet?_38-1">b</a> The exact <a href="/wiki/Solar_System#Terminology" title="Solar System">category</a> (asteroid, dwarf planet, or planet) to which particular Solar System objects belong, has been subject to some revision since the discovery of <a href="/wiki/Extrasolar_planet" class="mw-redirect" title="Extrasolar planet">extrasolar planets</a> and <a href="/wiki/Trans-Neptunian_object" title="Trans-Neptunian object">trans-Neptunian objects</a> </li> <li id="cite_note-exponents-55"><a href="#cite_ref-exponents_55-0">^</a> 10115 is 1 followed by 115 zeroes, or a <a href="/wiki/Googol" title="Googol">googol</a> multiplied by a quadrillion. 1010115 is 1 followed by a quadrillion googol zeroes. 101010122 is 1 followed by 1010122 (a <a href="/wiki/Googolplex" title="Googolplex">googolplex</a>10 sextillion) zeroes. </li> <li id="cite_note-96"><a href="#cite_ref-96">^</a> But not <a href="/wiki/Cloud" title="Cloud">cloud</a> or high-level fog droplets; droplet size increases with altitude. For a contradictory study indicating larger drop sizes even in ground fog, see <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFEldridge1961" class="citation journal cs1">Eldridge, Ralph G. (October 1961). <a rel="nofollow" class="external text" href="https://doi.org/10.1175%2F1520-0469%281961%29018%3C0671%3AAFFDSD%3E2.0.CO%3B2">"A Few Fog Drop-Size Distributions"</a>. Journal of Meteorology. 18 (5): 671–6. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1961JAtS...18..671E">1961JAtS...18..671E</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1175%2F1520-0469%281961%29018%3C0671%3AAFFDSD%3E2.0.CO%3B2">10.1175/1520-0469(1961)018<0671:AFFDSD>2.0.CO;2</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Journal+of+Meteorology&rft.atitle=A+Few+Fog+Drop-Size+Distributions&rft.volume=18&rft.issue=5&rft.pages=671-6&rft.date=1961-10&rft_id=info%3Adoi%2F10.1175%2F1520-0469%281961%29018%3C0671%3AAFFDSD%3E2.0.CO%3B2&rft_id=info%3Abibcode%2F1961JAtS...18..671E&rft.aulast=Eldridge&rft.aufirst=Ralph+G.&rft_id=https%3A%2F%2Fdoi.org%2F10.1175%252F1520-0469%25281961%2529018%253C0671%253AAFFDSD%253E2.0.CO%253B2&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="References">References</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=106" title="Edit section: References">edit</a>]</div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239543626"><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-Burgess_and_Quevedo-2">^ <a href="#cite_ref-Burgess_and_Quevedo_2-0">a</a> <a href="#cite_ref-Burgess_and_Quevedo_2-1">b</a> <a href="#cite_ref-Burgess_and_Quevedo_2-2">c</a> <a href="#cite_ref-Burgess_and_Quevedo_2-3">d</a> <a href="#cite_ref-Burgess_and_Quevedo_2-4">e</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBurgessQuevedo2007" class="citation journal cs1">Burgess, Cliff; <a href="/wiki/Fernando_Quevedo" title="Fernando Quevedo">Quevedo, Fernando</a> (November 2007). <a rel="nofollow" class="external text" href="https://www.scientificamerican.com/article/the-great-cosmic-roller-coaster-ride/">"The Great Cosmic Roller-Coaster Ride"</a>. <a href="/wiki/Scientific_American" title="Scientific American">Scientific American</a>. 297 (5): 55. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2007SciAm.297e..52B">2007SciAm.297e..52B</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1038%2Fscientificamerican1107-52">10.1038/scientificamerican1107-52</a> (inactive 2 November 2024). <a href="/wiki/PMID_(identifier)" class="mw-redirect" title="PMID (identifier)">PMID</a> <a rel="nofollow" class="external text" href="https://pubmed.ncbi.nlm.nih.gov/17990824">17990824</a>. Retrieved 1 May 2017.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Scientific+American&rft.atitle=The+Great+Cosmic+Roller-Coaster+Ride&rft.volume=297&rft.issue=5&rft.pages=55&rft.date=2007-11&rft_id=info%3Apmid%2F17990824&rft_id=info%3Adoi%2F10.1038%2Fscientificamerican1107-52&rft_id=info%3Abibcode%2F2007SciAm.297e..52B&rft.aulast=Burgess&rft.aufirst=Cliff&rft.au=Quevedo%2C+Fernando&rft_id=https%3A%2F%2Fwww.scientificamerican.com%2Farticle%2Fthe-great-cosmic-roller-coaster-ride%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"><code class="cs1-code">{{<a href="/wiki/Template:Cite_journal" title="Template:Cite journal">cite journal</a>}}</code>: CS1 maint: DOI inactive as of November 2024 (<a href="/wiki/Category:CS1_maint:_DOI_inactive_as_of_November_2024" title="Category:CS1 maint: DOI inactive as of November 2024">link</a>) </li> <li id="cite_note-3"><a href="#cite_ref-3">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNave" class="citation web cs1">Nave, Carl R. <a rel="nofollow" class="external text" href="http://hyperphysics.phy-astr.gsu.edu/hbase/particles/cowan.html#c1">"Cowan and Reines Neutrino Experiment"</a>. <a href="/wiki/HyperPhysics" title="HyperPhysics">HyperPhysics</a>. Retrieved 4 December 2008.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=HyperPhysics&rft.atitle=Cowan+and+Reines+Neutrino+Experiment&rft.aulast=Nave&rft.aufirst=Carl+R.&rft_id=http%3A%2F%2Fhyperphysics.phy-astr.gsu.edu%2Fhbase%2Fparticles%2Fcowan.html%23c1&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> (6.3 × 10−44 cm2, which gives an effective radius of about 1.42 × 10−22 m) </li> <li id="cite_note-NaveN3-4">^ <a href="#cite_ref-NaveN3_4-0">a</a> <a href="#cite_ref-NaveN3_4-1">b</a> <a href="#cite_ref-NaveN3_4-2">c</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFNave" class="citation web cs1">Nave, Carl R. <a rel="nofollow" class="external text" href="http://hyperphysics.phy-astr.gsu.edu/hbase/particles/neutrino3.html#c2">"Neutron Absorption Cross-sections"</a>. <a href="/wiki/HyperPhysics" title="HyperPhysics">HyperPhysics</a>. Retrieved 4 December 2008.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=HyperPhysics&rft.atitle=Neutron+Absorption+Cross-sections&rft.aulast=Nave&rft.aufirst=Carl+R.&rft_id=http%3A%2F%2Fhyperphysics.phy-astr.gsu.edu%2Fhbase%2Fparticles%2Fneutrino3.html%23c2&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> (area for 20 GeV about 10 × 10−42 m2 gives effective radius of about 2 × 10−21 m; for 250 GeV about 150 × 10−42 m2 gives effective radius of about 7 × 10−21 m) </li> <li id="cite_note-5"><a href="#cite_ref-5">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAbbott2016" class="citation journal cs1">Abbott, B. P.; et al. (2016). "Observation of Gravitational Waves from a Binary Black Hole Merger". 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Retrieved 4 December 2008. <q>garden spider silk has a diameter of about 0.003 mm ... Dragline silk (about 0.00032 inch (0.008 mm) in Nephila)</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Spider+Silk&rft.aulast=Ramel&rft.aufirst=Gordon&rft_id=http%3A%2F%2Fwww.earthlife.net%2Fchelicerata%2Fsilk.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> </li> <li id="cite_note-94"><a href="#cite_ref-94">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWise,_R.R.Hoober,_J.K.2007" class="citation book cs1">Wise, R.R.; Hoober, J.K. (2007). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=FKeCVPbJ3asC">The Structure and Function of Plastids</a>. 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The Astrophysical Journal. 628 (2): 973–985. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<a rel="nofollow" class="external text" href="https://arxiv.org/abs/astro-ph/0504337">astro-ph/0504337</a>. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2005ApJ...628..973L">2005ApJ...628..973L</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F430901">10.1086/430901</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:15109583">15109583</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=The+Effective+Temperature+Scale+of+Galactic+Red+Supergiants%3A+Cool%2C+but+Not+As+Cool+As+We+Thought&rft.volume=628&rft.issue=2&rft.pages=973-985&rft.date=2005&rft_id=info%3Aarxiv%2Fastro-ph%2F0504337&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A15109583%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1086%2F430901&rft_id=info%3Abibcode%2F2005ApJ...628..973L&rft.au=Emily+M.+Levesque&rft.au=Philip+Massey&rft.au=K.+A.+G.+Olsen&rft.au=Bertrand+Plez&rft.au=Eric+Josselin&rft.au=Andre+Maeder&rft.au=Georges+Meynet&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> </li> <li id="cite_note-:0-195"><a href="#cite_ref-:0_195-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFShenoyHumphreysJonesMarengo2016" class="citation journal cs1">Shenoy, Dinesh; Humphreys, Roberta M.; Jones, Terry J.; Marengo, Massimo; Gehrz, Robert D.; Helton, L. Andrew; Hoffmann, William F.; Skemer, Andrew J.; Hinz, Philip M. (2016). <a rel="nofollow" class="external text" href="https://doi.org/10.3847%2F0004-6256%2F151%2F3%2F51">"SEARCHING FOR COOL DUST IN THE MID-TO-FAR INFRARED: THE MASS-LOSS HISTORIES OF THE HYPERGIANTS μ Cep, VY CMa, IRC+10420, AND ρ Cas"</a>. The Astronomical Journal. 151 (3): 51. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<a rel="nofollow" class="external text" href="https://arxiv.org/abs/1512.01529">1512.01529</a>. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2016AJ....151...51S">2016AJ....151...51S</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.3847%2F0004-6256%2F151%2F3%2F51">10.3847/0004-6256/151/3/51</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Astronomical+Journal&rft.atitle=SEARCHING+FOR+COOL+DUST+IN+THE+MID-TO-FAR+INFRARED%3A+THE+MASS-LOSS+HISTORIES+OF+THE+HYPERGIANTS+%CE%BC+Cep%2C+VY+CMa%2C+IRC%2B10420%2C+AND+%CF%81+Cas&rft.volume=151&rft.issue=3&rft.pages=51&rft.date=2016&rft_id=info%3Aarxiv%2F1512.01529&rft_id=info%3Adoi%2F10.3847%2F0004-6256%2F151%2F3%2F51&rft_id=info%3Abibcode%2F2016AJ....151...51S&rft.aulast=Shenoy&rft.aufirst=Dinesh&rft.au=Humphreys%2C+Roberta+M.&rft.au=Jones%2C+Terry+J.&rft.au=Marengo%2C+Massimo&rft.au=Gehrz%2C+Robert+D.&rft.au=Helton%2C+L.+Andrew&rft.au=Hoffmann%2C+William+F.&rft.au=Skemer%2C+Andrew+J.&rft.au=Hinz%2C+Philip+M.&rft_id=https%3A%2F%2Fdoi.org%2F10.3847%252F0004-6256%252F151%252F3%252F51&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> </li> <li id="cite_note-Wittkowski_vlti-196"><a href="#cite_ref-Wittkowski_vlti_196-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFWittkowskiHauschildtArroyo-TorresMarcaide2012" class="citation journal cs1">Wittkowski, M.; Hauschildt, P.H.; Arroyo-Torres, B.; Marcaide, J.M. (5 April 2012). "Fundamental properties and atmospheric structure of the red supergiant VY CMa based on VLTI/AMBER spectro-interferometry". Astronomy & Astrophysics. 540: L12. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<a rel="nofollow" class="external text" href="https://arxiv.org/abs/1203.5194">1203.5194</a>. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2012A&A...540L..12W">2012A&A...540L..12W</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1051%2F0004-6361%2F201219126">10.1051/0004-6361/201219126</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:54044968">54044968</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Astronomy+%26+Astrophysics&rft.atitle=Fundamental+properties+and+atmospheric+structure+of+the+red+supergiant+VY+CMa+based+on+VLTI%2FAMBER+spectro-interferometry&rft.volume=540&rft.pages=L12&rft.date=2012-04-05&rft_id=info%3Aarxiv%2F1203.5194&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A54044968%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1051%2F0004-6361%2F201219126&rft_id=info%3Abibcode%2F2012A%26A...540L..12W&rft.aulast=Wittkowski&rft.aufirst=M.&rft.au=Hauschildt%2C+P.H.&rft.au=Arroyo-Torres%2C+B.&rft.au=Marcaide%2C+J.M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> </li> <li id="cite_note-Parthasarathy2000-197"><a href="#cite_ref-Parthasarathy2000_197-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFParthasarathy2000" class="citation journal cs1">Parthasarathy, M. (2000). "Birth and early evolution of planetary nebulae". Bulletin of the Astronomical Society of India. 28: 217–224. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2000BASI...28..217P">2000BASI...28..217P</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Bulletin+of+the+Astronomical+Society+of+India&rft.atitle=Birth+and+early+evolution+of+planetary+nebulae&rft.volume=28&rft.pages=217-224&rft.date=2000&rft_id=info%3Abibcode%2F2000BASI...28..217P&rft.aulast=Parthasarathy&rft.aufirst=M.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> </li> <li id="cite_note-Cat_calc-198"><a href="#cite_ref-Cat_calc_198-0">^</a> radius = distance times sin(angular diameter/2) = 0.2 <a href="/wiki/Light-year" title="Light-year">light-year</a>. Distance = 3.3 ± 0.9 <a href="/wiki/Light-year" title="Light-year">kly</a>; angular diameter = 20 <a href="/wiki/Arcseconds" class="mw-redirect" title="Arcseconds">arcseconds</a> (<a href="#CITEREFReedBalickHajianKlayton1999">Reed et al. 1999</a>) </li> <li id="cite_note-199"><a href="#cite_ref-199">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFReedBalickHajianKlayton1999" class="citation journal cs1">Reed, Darren S.; Balick, Bruce; Hajian, Arsen R.; Klayton, Tracy L.; Giovanardi, Stefano; Casertano, Stefano; Panagia, Nino; Terzian, Yervant (1999). "Hubble Space Telescope Measurements of the Expansion of NGC 6543: Parallax Distance and Nebular Evolution". Astronomical Journal. 118 (5): 2430–2441. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<a rel="nofollow" class="external text" href="https://arxiv.org/abs/astro-ph/9907313">astro-ph/9907313</a>. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/1999AJ....118.2430R">1999AJ....118.2430R</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F301091">10.1086/301091</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:14746840">14746840</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Astronomical+Journal&rft.atitle=Hubble+Space+Telescope+Measurements+of+the+Expansion+of+NGC+6543%3A+Parallax+Distance+and+Nebular+Evolution&rft.volume=118&rft.issue=5&rft.pages=2430-2441&rft.date=1999&rft_id=info%3Aarxiv%2Fastro-ph%2F9907313&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A14746840%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1086%2F301091&rft_id=info%3Abibcode%2F1999AJ....118.2430R&rft.aulast=Reed&rft.aufirst=Darren+S.&rft.au=Balick%2C+Bruce&rft.au=Hajian%2C+Arsen+R.&rft.au=Klayton%2C+Tracy+L.&rft.au=Giovanardi%2C+Stefano&rft.au=Casertano%2C+Stefano&rft.au=Panagia%2C+Nino&rft.au=Terzian%2C+Yervant&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> </li> <li id="cite_note-Szpir-200"><a href="#cite_ref-Szpir_200-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSzpir2001" class="citation web cs1">Szpir, Michael (May–June 2001). <a rel="nofollow" class="external text" href="https://web.archive.org/web/20030629033609/http://www.americanscientist.org/template/AssetDetail/assetid/14678">"Bart Bok's Black Blobs"</a>. <a href="/wiki/American_Scientist" title="American Scientist">American Scientist</a>. Archived from <a rel="nofollow" class="external text" href="http://www.americanscientist.org/template/AssetDetail/assetid/14678">the original</a> on 29 June 2003. Retrieved 19 November 2008. <q>Bok globules such as Barnard 68 are only about half a light-year across and weigh in at about two solar masses</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Bart+Bok%27s+Black+Blobs&rft.pub=American+Scientist&rft.date=2001-05%2F2001-06&rft.aulast=Szpir&rft.aufirst=Michael&rft_id=http%3A%2F%2Fwww.americanscientist.org%2Ftemplate%2FAssetDetail%2Fassetid%2F14678&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> </li> <li id="cite_note-apj667-201"><a href="#cite_ref-apj667_201-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFSandstromPeek,_J._E._G.Bower,_Geoffrey_C.Bolatto,_Alberto_D.1999" class="citation journal cs1">Sandstrom, Karin M; Peek, J. E. G.; Bower, Geoffrey C.; Bolatto, Alberto D.; Plambeck, Richard L. (1999). "A Parallactic Distance of 389+24 −21 parsecs to the Orion Nebula Cluster from Very Long Baseline Array Observations". The Astrophysical Journal. 667 (2): 1161–1169. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<a rel="nofollow" class="external text" href="https://arxiv.org/abs/0706.2361">0706.2361</a>. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2007ApJ...667.1161S">2007ApJ...667.1161S</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F520922">10.1086/520922</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:18192326">18192326</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=The+Astrophysical+Journal&rft.atitle=A+Parallactic+Distance+of+%3Cspan+class%3D%22nowrap%22%3E%3Cspan+data-sort-value%3D%227002389000000000000%E2%99%A0%22%3E%3C%2Fspan%3E389%3Cspan+style%3D%22margin-left%3A0.3em%3B%22%3E%3Cspan+style%3D%22display%3Ainline-block%3Bmargin-bottom%3A-0.3em%3Bvertical-align%3A-0.4em%3Bline-height%3A1.2em%3Bfont-size%3A85%25%3Btext-align%3Aright%3B%22%3E%2B24%3Cbr+%2F%3E%E2%88%9221%3C%2Fspan%3E%3C%2Fspan%3E%3C%2Fspan%3E+parsecs+to+the+Orion+Nebula+Cluster+from+Very+Long+Baseline+Array+Observations&rft.volume=667&rft.issue=2&rft.pages=1161-1169&rft.date=1999&rft_id=info%3Aarxiv%2F0706.2361&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A18192326%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1086%2F520922&rft_id=info%3Abibcode%2F2007ApJ...667.1161S&rft.aulast=Sandstrom&rft.aufirst=Karin+M&rft.au=Peek%2C+J.+E.+G.&rft.au=Bower%2C+Geoffrey+C.&rft.au=Bolatto%2C+Alberto+D.&rft.au=Plambeck%2C+Richard+L.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> </li> <li id="cite_note-202"><a href="#cite_ref-202">^</a> diameter=sin(65 arcminutes)*1270 light-years=24; where "65.00 × 60.0 (arcmin)" sourced from <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120318092511/http://spider.seds.org/ngc/revngcic.cgi?NGC1976">Revised NGC Data for NGC 1976</a> </li> <li id="cite_note-203"><a href="#cite_ref-203">^</a> distance × sin( diameter_angle ), using distance of 5kpc (15.8 ± 1.1 kly) and angle 36.3', = 172 ± 12.5 ly. </li> <li id="cite_note-vandeVenetal2006-204"><a href="#cite_ref-vandeVenetal2006_204-0">^</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFvan_de_Venvan_den_Bosch,_R._C._E.Verolme,_E._K.de_Zeeuw,_P._T.2006" class="citation journal cs1">van de Ven, G.; van den Bosch, R. C. E.; Verolme, E. K.; de Zeeuw, P. T. (2006). "The dynamical distance and intrinsic structure of the globular cluster ω Centauri". <a href="/wiki/Astronomy_and_Astrophysics" class="mw-redirect" title="Astronomy and Astrophysics">Astronomy and Astrophysics</a>. 445 (2): 513–543. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<a rel="nofollow" class="external text" href="https://arxiv.org/abs/astro-ph/0509228">astro-ph/0509228</a>. <a href="/wiki/Bibcode_(identifier)" class="mw-redirect" title="Bibcode (identifier)">Bibcode</a>:<a rel="nofollow" class="external text" href="https://ui.adsabs.harvard.edu/abs/2006A&A...445..513V">2006A&A...445..513V</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1051%2F0004-6361%3A20053061">10.1051/0004-6361:20053061</a>. <a href="/wiki/S2CID_(identifier)" class="mw-redirect" title="S2CID (identifier)">S2CID</a> <a rel="nofollow" class="external text" href="https://api.semanticscholar.org/CorpusID:15538249">15538249</a>. <q>best-fit dynamical distance D=4.8±0.3 kpc ... consistent with the canonical value 5.0±0.2 kpc obtained by photometric methods</q></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Astronomy+and+Astrophysics&rft.atitle=The+dynamical+distance+and+intrinsic+structure+of+the+globular+cluster+%CF%89+Centauri&rft.volume=445&rft.issue=2&rft.pages=513-543&rft.date=2006&rft_id=info%3Aarxiv%2Fastro-ph%2F0509228&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A15538249%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1051%2F0004-6361%3A20053061&rft_id=info%3Abibcode%2F2006A%26A...445..513V&rft.aulast=van+de+Ven&rft.aufirst=G.&rft.au=van+den+Bosch%2C+R.+C.+E.&rft.au=Verolme%2C+E.+K.&rft.au=de+Zeeuw%2C+P.+T.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AOrders+of+magnitude+%28length%29" class="Z3988"> </li> <li id="cite_note-van_Leeuwen2007-205">^ <a href="#cite_ref-van_Leeuwen2007_205-0">a</a> <a href="#cite_ref-van_Leeuwen2007_205-1">b</a> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFvan_Leeuwen2007" class="citation journal cs1">van Leeuwen, F. 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class="mw-heading mw-heading2"><h2 id="External_links">External links</h2>[<a href="/w/index.php?title=Orders_of_magnitude_(length)&action=edit&section=107" title="Edit section: External links">edit</a>]</div> <ul><li><a rel="nofollow" class="external text" href="http://www.vendian.org/howbig/">How Big Are Things?</a> – displays orders of magnitude in successively larger rooms.</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20120702055359/http://microcosm.web.cern.ch/microcosm/P10/english/welcome.html">Powers of Ten</a> – Travel across the Universe.</li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20080412094332/http://www.shekpvar.net/~dna/Publications/Cosmos/cosmos.html">Cosmos – Journey from microcosmos to macrocosmos</a> (Digital Nature Agency).</li> <li><a rel="nofollow" class="external text" href="http://htwins.net/scale2/">Scale of the universe</a> – interactive guide to length magnitudes</li> <li><a rel="nofollow" class="external text" href="https://www.youtube.com/watch?v=FglEbPXxka4">Video (4:29)</a> on <a href="/wiki/YouTube_video_(identifier)" class="mw-redirect" title="YouTube video (identifier)">YouTube</a> – <a rel="nofollow" class="external text" href="https://venturebeat.com/2020/03/16/orders-of-magnitude-vr-reveals-humanitys-tiny-scale-in-the-universe/">Orders of Magnitude</a> (March 2020).</li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist 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.navbox{display:none!important}}</style><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1214402035"></div><div role="navigation" class="navbox" aria-labelledby="Metric_units_of_length_(by_order_of_magnitude)" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar 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href="/wiki/Template:Metric_units_of_length" title="Template:Metric units of length"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Metric_units_of_length" title="Template talk:Metric units of length"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Metric_units_of_length" title="Special:EditPage/Template:Metric units of length"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Metric_units_of_length_(by_order_of_magnitude)" style="font-size:114%;margin:0 4em"><a href="/wiki/Metric_system" title="Metric system">Metric</a> units of <a href="/wiki/Length" title="Length">length</a> (by <a class="mw-selflink selflink">order of magnitude</a>)</div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div>From smallest to largest (left to right). Commonly used units shown in bold italics.</div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Quectometre" class="mw-redirect" title="Quectometre">quectometre (qm=10−30 m)</a></li> <li><a href="/wiki/Rontometre" class="mw-redirect" title="Rontometre">rontometre (rm)</a></li> <li><a href="/wiki/Yoctometre" class="mw-redirect" title="Yoctometre">yoctometre (ym)</a></li> <li><a href="/wiki/Zeptometre" class="mw-redirect" title="Zeptometre">zeptometre (zm)</a></li> <li><a href="/wiki/Attometre" class="mw-redirect" title="Attometre">attometre (am)</a></li> <li><a href="/wiki/Femtometre" title="Femtometre">femtometre/fermi (fm)</a></li> <li><a href="/wiki/Picometre" title="Picometre">picometre (pm)</a></li> <li><a href="/wiki/Nanometre" title="Nanometre">nanometre (nm=10−9 m)</a></li> <li><a href="/wiki/Micrometre" title="Micrometre">micrometre/micron (μm=10−6 m)</a></li> <li><a href="/wiki/Millimetre" title="Millimetre">millimetre (mm=⁠1/1000⁠ m)</a></li> <li><a href="/wiki/Centimetre" title="Centimetre">centimetre (cm=⁠1/100⁠ m)</a></li> <li><a href="/wiki/Decimetre" title="Decimetre">decimetre (dm=⁠1/10⁠ m)</a></li> <li><a href="/wiki/Metre" title="Metre">metre (m)</a></li> <li><a href="/wiki/Decametre" title="Decametre">decametre (dam=10 m)</a></li> <li><a href="/wiki/Hectometre" title="Hectometre">hectometre (hm=100 m)</a></li> <li><a href="/wiki/Kilometre" title="Kilometre">kilometre (km=1000 m)</a></li> <li><a href="/wiki/Megametre" class="mw-redirect" title="Megametre">megametre (Mm=106 m)</a></li> <li><a href="/wiki/Gigametre" class="mw-redirect" title="Gigametre">gigametre (Gm)</a></li> <li><a href="/wiki/Terametre" class="mw-redirect" title="Terametre">terametre (Tm)</a></li> <li><a href="/wiki/Petametre" class="mw-redirect" title="Petametre">petametre (Pm)</a></li> <li><a href="/wiki/Exametre" class="mw-redirect" title="Exametre">exametre (Em)</a></li> <li><a href="/wiki/Zettametre" class="mw-redirect" title="Zettametre">zettametre (Zm)</a></li> <li><a href="/wiki/Yottametre" class="mw-redirect" title="Yottametre">yottametre (Ym)</a></li> <li><a href="/wiki/Ronnametre" class="mw-redirect" title="Ronnametre">ronnametre (Rm)</a></li> <li><a href="/wiki/Quettametre" class="mw-redirect" title="Quettametre">quettametre (Qm=1030 m)</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Orders_of_magnitude" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Orders_of_magnitude" title="Template:Orders of magnitude"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Orders_of_magnitude" title="Template talk:Orders of magnitude"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Orders_of_magnitude" title="Special:EditPage/Template:Orders of magnitude"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Orders_of_magnitude" style="font-size:114%;margin:0 4em"><a href="/wiki/Order_of_magnitude" title="Order of magnitude">Orders of magnitude</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:1%">Quantity</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Orders_of_magnitude_(acceleration)" title="Orders of magnitude (acceleration)">Acceleration</a></li> <li><a href="/wiki/Orders_of_magnitude_(angular_momentum)" title="Orders of magnitude (angular momentum)">Angular momentum</a></li> <li><a href="/wiki/Orders_of_magnitude_(area)" title="Orders of magnitude (area)">Area</a></li> <li><a href="/wiki/Orders_of_magnitude_(bit_rate)" title="Orders of magnitude (bit rate)">Bit rate</a></li> <li><a href="/wiki/Orders_of_magnitude_(charge)" title="Orders of magnitude (charge)">Charge</a></li> <li><a href="/wiki/Computer_performance_by_orders_of_magnitude" title="Computer performance by orders of magnitude">Computing</a></li> <li><a href="/wiki/Orders_of_magnitude_(current)" title="Orders of magnitude (current)">Current</a></li> <li><a href="/wiki/Orders_of_magnitude_(data)" title="Orders of magnitude (data)">Data</a></li> <li><a href="/wiki/Orders_of_magnitude_(density)" class="mw-redirect" title="Orders of magnitude (density)">Density</a></li> <li><a href="/wiki/Orders_of_magnitude_(energy)" title="Orders of magnitude (energy)">Energy</a> / <a href="/wiki/Energy_density_Extended_Reference_Table" title="Energy density Extended Reference Table">Energy density</a></li> <li><a href="/wiki/Orders_of_magnitude_(entropy)" title="Orders of magnitude (entropy)">Entropy</a></li> <li><a href="/wiki/Orders_of_magnitude_(force)" title="Orders of magnitude (force)">Force</a></li> <li><a href="/wiki/Orders_of_magnitude_(frequency)" title="Orders of magnitude (frequency)">Frequency</a></li> <li><a href="/wiki/Orders_of_magnitude_(illuminance)" title="Orders of magnitude (illuminance)">Illuminance</a></li> <li><a class="mw-selflink selflink">Length</a></li> <li><a href="/wiki/Orders_of_magnitude_(luminance)" class="mw-redirect" title="Orders of magnitude (luminance)">Luminance</a></li> <li><a href="/wiki/Orders_of_magnitude_(magnetic_moment)" title="Orders of magnitude (magnetic moment)">Magnetic moment</a></li> <li><a href="/wiki/Orders_of_magnitude_(magnetic_field)" title="Orders of magnitude (magnetic field)">Magnetic field</a></li> <li><a href="/wiki/Orders_of_magnitude_(mass)" title="Orders of magnitude (mass)">Mass</a></li> <li><a href="/wiki/Orders_of_magnitude_(molar_concentration)" title="Orders of magnitude (molar concentration)">Molarity</a></li> <li><a href="/wiki/Orders_of_magnitude_(numbers)" title="Orders of magnitude (numbers)">Numbers</a></li> <li><a href="/wiki/Orders_of_magnitude_(power)" title="Orders of magnitude (power)">Power</a></li> <li><a href="/wiki/Orders_of_magnitude_(pressure)" title="Orders of magnitude (pressure)">Pressure</a></li> <li><a href="/wiki/Orders_of_magnitude_(probability)" title="Orders of magnitude (probability)">Probability</a></li> <li><a href="/wiki/Orders_of_magnitude_(radiation)" title="Orders of magnitude (radiation)">Radiation</a></li> <li><a href="/wiki/Sound_pressure#Examples_of_sound_pressure" title="Sound pressure">Sound pressure</a></li> <li><a href="/wiki/Orders_of_magnitude_(specific_heat_capacity)" title="Orders of magnitude (specific heat capacity)">Specific heat capacity</a></li> <li><a href="/wiki/Orders_of_magnitude_(speed)" title="Orders of magnitude (speed)">Speed</a></li> <li><a href="/wiki/Orders_of_magnitude_(temperature)" title="Orders of magnitude (temperature)">Temperature</a></li> <li><a href="/wiki/Orders_of_magnitude_(torque)" title="Orders of magnitude (torque)">Torque</a></li> <li><a href="/wiki/Orders_of_magnitude_(time)" title="Orders of magnitude (time)">Time</a></li> <li><a href="/wiki/Orders_of_magnitude_(voltage)" title="Orders of magnitude (voltage)">Voltage</a></li> <li><a href="/wiki/Orders_of_magnitude_(volume)" title="Orders of magnitude (volume)">Volume</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">See also</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Back-of-the-envelope_calculation" title="Back-of-the-envelope calculation">Back-of-the-envelope calculation</a></li> <li><a href="/wiki/Electronics_industry#List_of_best-selling_electronic_devices" title="Electronics industry">Best-selling electronic devices</a></li> <li><a href="/wiki/Fermi_problem" title="Fermi problem">Fermi problem</a></li> <li><a href="/wiki/Power_of_10" title="Power of 10">Powers of 10</a> and <a href="/wiki/Decade_(log_scale)" title="Decade (log scale)">decades</a> <ul><li><a href="/wiki/Decimal" title="Decimal">10th</a></li> <li><a href="/wiki/Hundredth" title="Hundredth">100th</a></li> <li><a href="/wiki/Millionth" title="Millionth">1000000th</a></li></ul></li> <li><a href="/wiki/Metric_prefix" title="Metric prefix">Metric (SI) prefix</a></li> <li><a href="/wiki/Macroscopic_scale" title="Macroscopic scale">Macroscopic scale</a></li> <li><a href="/wiki/Microscopic_scale" title="Microscopic scale">Microscopic scale</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Related</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Astronomical_system_of_units" title="Astronomical system of units">Astronomical system of units</a></li> <li><a href="/wiki/Location_of_Earth" title="Location of Earth">Earth's location in the Universe</a></li> <li><a href="/wiki/Cosmic_View" title="Cosmic View">Cosmic View</a> (1957 book)</li> <li><a href="/wiki/To_the_Moon_and_Beyond" title="To the Moon and Beyond">To the Moon and Beyond</a> (1964 film)</li> <li><a href="/wiki/Cosmic_Zoom" title="Cosmic Zoom">Cosmic Zoom</a> (1968 film)</li> <li><a href="/wiki/Powers_of_Ten_(film)" title="Powers of Ten (film)">Powers of Ten (1968 and 1977 films)</a></li> <li><a href="/wiki/Cosmic_Voyage_(1996_film)" title="Cosmic Voyage (1996 film)">Cosmic Voyage (1996 documentary)</a></li> <li><a href="/wiki/The_Scale_of_the_Universe" title="The Scale of the Universe">The Scale of the Universe</a> (2010)</li> <li><a href="/wiki/Cosmic_Eye" title="Cosmic Eye">Cosmic Eye</a> (2012)</li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/16px-Symbol_category_class.svg.png" decoding="async" width="16" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/23px-Symbol_category_class.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/9/96/Symbol_category_class.svg/31px-Symbol_category_class.svg.png 2x" data-file-width="180" data-file-height="185" /> <a href="/wiki/Category:Orders_of_magnitude" title="Category:Orders of magnitude">Category</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Units_of_length_used_in_Astronomy" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Units_of_length_used_in_Astronomy" title="Template:Units of length used in Astronomy"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Units_of_length_used_in_Astronomy" title="Template talk:Units of length used in Astronomy"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Units_of_length_used_in_Astronomy" title="Special:EditPage/Template:Units of length used in Astronomy"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Units_of_length_used_in_Astronomy" style="font-size:114%;margin:0 4em"><a href="/wiki/Unit_of_length" title="Unit of length">Units of length</a> used in <a href="/wiki/Astronomy" title="Astronomy">Astronomy</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><a href="/wiki/Astronomical_system_of_units" title="Astronomical system of units">Astronomical system of units</a></li></ul> </div></td></tr><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Earth_radius_(unit)" class="mw-redirect" title="Earth radius (unit)">Earth radius</a> (<var>R</var>🜨 or RE)</li> <li><a href="/wiki/Light-second" title="Light-second">Light-second</a> (ls)</li> <li><a href="/wiki/Solar_radius" title="Solar radius">Solar radius</a> (<var>R</var>☉)</li> <li><a href="/wiki/Gigametre" class="mw-redirect" title="Gigametre">gigametre</a> (Gm)</li> <li><a href="/wiki/Astronomical_unit" title="Astronomical unit">Astronomical unit</a> (au)</li> <li><a href="/wiki/Terametre" class="mw-redirect" title="Terametre">terametre</a> (Tm)</li> <li><a href="/wiki/Light-year" title="Light-year">light-year</a> (ly)</li> <li><a href="/wiki/Parsec" title="Parsec">parsec</a> (pc)</li> <li><a href="/wiki/Kiloparsec" class="mw-redirect" title="Kiloparsec">kiloparsec</a> (kpc)</li> <li><a href="/wiki/Megaparsec" class="mw-redirect" title="Megaparsec">megaparsec</a> (Mpc)</li> <li><a href="/wiki/Gigaparsec" class="mw-redirect" title="Gigaparsec">gigaparsec</a> (Gpc)</li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <dl><dt>See also</dt> <dd><a href="/wiki/Cosmic_distance_ladder" title="Cosmic distance ladder">Cosmic distance ladder</a></dd> <dd><a class="mw-selflink selflink">Orders of magnitude (length)</a></dd> <dd><a href="/wiki/Conversion_of_units" title="Conversion of units">Conversion of units</a></dd></dl> </div></td></tr></tbody></table></div> <style data-mw-deduplicate="TemplateStyles:r1130092004">.mw-parser-output .portal-bar{font-size:88%;font-weight:bold;display:flex;justify-content:center;align-items:baseline}.mw-parser-output .portal-bar-bordered{padding:0 2em;background-color:#fdfdfd;border:1px solid #a2a9b1;clear:both;margin:1em auto 0}.mw-parser-output .portal-bar-related{font-size:100%;justify-content:flex-start}.mw-parser-output .portal-bar-unbordered{padding:0 1.7em;margin-left:0}.mw-parser-output .portal-bar-header{margin:0 1em 0 0.5em;flex:0 0 auto;min-height:24px}.mw-parser-output .portal-bar-content{display:flex;flex-flow:row 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