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Available in 10 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-10" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">10 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Habitabilitat_en_sistemes_de_nanes_taronges" title="Habitabilitat en sistemes de nanes taronges – Catalan" lang="ca" hreflang="ca" data-title="Habitabilitat en sistemes de nanes taronges" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-es badge-Q17437798 badge-goodarticle mw-list-item" title="good article badge"><a href="https://es.wikipedia.org/wiki/Habitabilidad_en_sistemas_de_enanas_naranjas" title="Habitabilidad en sistemas de enanas naranjas – Spanish" lang="es" hreflang="es" data-title="Habitabilidad en sistemas de enanas naranjas" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B3%DA%A9%D9%88%D9%86%D8%AA%E2%80%8C%D9%BE%D8%B0%DB%8C%D8%B1%DB%8C_%D8%B3%D8%A7%D9%85%D8%A7%D9%86%D9%87%E2%80%8C%D9%87%D8%A7%DB%8C_%D8%B3%D8%AA%D8%A7%D8%B1%D9%87%E2%80%8C%D8%A7%DB%8C_%D8%B1%D8%B4%D8%AA%D9%87_%D8%A7%D8%B5%D9%84%DB%8C_%D9%86%D9%88%D8%B9_%DA%A9%DB%8C" title="سکونت‌پذیری سامانه‌های ستاره‌ای رشته اصلی نوع کی – Persian" lang="fa" hreflang="fa" data-title="سکونت‌پذیری سامانه‌های ستاره‌ای رشته اصلی نوع کی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/K%ED%98%95_%EC%A3%BC%EA%B3%84%EC%97%B4%EC%84%B1%EA%B3%84%EC%9D%98_%EC%83%9D%EB%AA%85%EC%B2%B4_%EA%B1%B0%EC%A3%BC%EA%B0%80%EB%8A%A5%EC%84%B1" title="K형 주계열성계의 생명체 거주가능성 – Korean" lang="ko" hreflang="ko" data-title="K형 주계열성계의 생명체 거주가능성" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Abitabilit%C3%A0_di_un_sistema_planetario_di_una_nana_arancione" title="Abitabilità di un sistema planetario di una nana arancione – Italian" lang="it" hreflang="it" data-title="Abitabilità di un sistema planetario di una nana arancione" data-language-autonym="Italiano" data-language-local-name="Italian" class="interlanguage-link-target"><span>Italiano</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E6%A9%99%E8%89%B2%E7%9F%AE%E6%98%9F%E7%B3%BB%E3%81%AE%E5%B1%85%E4%BD%8F%E5%8F%AF%E8%83%BD%E6%80%A7" title="橙色矮星系の居住可能性 – Japanese" lang="ja" hreflang="ja" data-title="橙色矮星系の居住可能性" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%96%D0%B8%D0%B7%D0%BD%D0%B5%D0%BF%D1%80%D0%B8%D0%B3%D0%BE%D0%B4%D0%BD%D0%BE%D1%81%D1%82%D1%8C_%D1%81%D0%B8%D1%81%D1%82%D0%B5%D0%BC%D1%8B_%D0%BE%D1%80%D0%B0%D0%BD%D0%B6%D0%B5%D0%B2%D0%BE%D0%B3%D0%BE_%D0%BA%D0%B0%D1%80%D0%BB%D0%B8%D0%BA%D0%B0" title="Жизнепригодность системы оранжевого карлика – Russian" lang="ru" hreflang="ru" data-title="Жизнепригодность системы оранжевого карлика" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/K-tyypin_p%C3%A4%C3%A4sarjan_t%C3%A4htij%C3%A4rjestelmien_elinkelpoisuus" title="K-tyypin pääsarjan tähtijärjestelmien elinkelpoisuus – Finnish" lang="fi" hreflang="fi" data-title="K-tyypin pääsarjan tähtijärjestelmien elinkelpoisuus" data-language-autonym="Suomi" data-language-local-name="Finnish" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/S%E1%BB%B1_s%E1%BB%91ng_%E1%BB%9F_c%C3%A1c_ng%C3%B4i_sao_d%C3%A3y_ch%C3%ADnh_lo%E1%BA%A1i_K" title="Sự sống ở các ngôi sao dãy chính loại K – Vietnamese" lang="vi" hreflang="vi" data-title="Sự sống ở các ngôi sao dãy chính loại K" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnamese" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%A9%99%E7%9F%AE%E6%98%9F%E7%B3%BB%E7%B5%B1%E9%81%A9%E5%B1%85%E6%80%A7" title="橙矮星系統適居性 – Chinese" lang="zh" hreflang="zh" data-title="橙矮星系統適居性" data-language-autonym="中文" data-language-local-name="Chinese" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q5636874#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> 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class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/MarsCuriosityRover-Drilling-Sol170%2B%2B-2.jpg/200px-MarsCuriosityRover-Drilling-Sol170%2B%2B-2.jpg" decoding="async" width="200" height="221" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/eb/MarsCuriosityRover-Drilling-Sol170%2B%2B-2.jpg/300px-MarsCuriosityRover-Drilling-Sol170%2B%2B-2.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/eb/MarsCuriosityRover-Drilling-Sol170%2B%2B-2.jpg/400px-MarsCuriosityRover-Drilling-Sol170%2B%2B-2.jpg 2x" data-file-width="3819" data-file-height="4223" /></a></span></td></tr><tr><td class="sidebar-pretitle-with-top-image">This article is one of a series on:</td></tr><tr><th class="sidebar-title-with-pretitle"><a href="/wiki/Extraterrestrial_life" title="Extraterrestrial life">Life in the universe</a></th></tr><tr><td class="sidebar-above"> <a href="/wiki/Outline_of_extraterrestrial_life" title="Outline of extraterrestrial life">Outline</a></td></tr><tr><th class="sidebar-heading" style="background:#ddd; border-bottom:1px #fafafa solid;"> <a href="/wiki/Planetary_habitability_in_the_Solar_System" title="Planetary habitability in the Solar System">Planetary habitability in the Solar System</a></th></tr><tr><td class="sidebar-content hlist"> <ul><li><a href="/wiki/Life_on_Venus" title="Life on Venus">Venus</a></li> <li><a href="/wiki/Life" title="Life">Earth</a></li> <li><a href="/wiki/Life_on_Mars" title="Life on Mars">Mars</a></li> <li><a href="/wiki/Europa_(moon)#Habitability" title="Europa (moon)">Europa</a></li> <li><a href="/wiki/Enceladus#Potential_habitability" title="Enceladus">Enceladus</a></li> <li><a href="/wiki/Life_on_Titan" title="Life on Titan">Titan</a></li></ul></td> </tr><tr><th class="sidebar-heading" style="background:#ddd; border-bottom:1px #fafafa solid;"> Life outside the <a href="/wiki/Solar_System" title="Solar System">Solar System</a></th></tr><tr><td class="sidebar-content hlist"> <ul><li><a href="/wiki/List_of_potentially_habitable_exoplanets" title="List of potentially habitable exoplanets">Potentially habitable exoplanets</a></li> <li><a href="/wiki/Galactic_habitable_zone" title="Galactic habitable zone">Galactic habitable zone</a></li></ul></td> </tr><tr><th class="sidebar-heading" style="background:#ddd; border-bottom:1px #fafafa solid;"> Habitability of...</th></tr><tr><td class="sidebar-content hlist"> <ul><li><a href="/wiki/Habitability_of_binary_star_systems" title="Habitability of binary star systems">Binary star systems</a></li> <li><a href="/wiki/Habitability_of_natural_satellites" title="Habitability of natural satellites">Natural satellites</a></li> <li><a href="/wiki/Habitability_of_neutron_star_systems" title="Habitability of neutron star systems">Neutron star systems</a></li> <li><a href="/wiki/Habitability_of_red_dwarf_systems" title="Habitability of red dwarf systems">Red dwarf systems</a></li> <li><a class="mw-selflink selflink">K-type main-sequence star systems</a></li> <li><a href="/wiki/Habitability_of_yellow_dwarf_systems" title="Habitability of yellow dwarf systems">Yellow dwarf systems</a></li> <li><a href="/wiki/Habitability_of_F-type_main-sequence_star_systems" title="Habitability of F-type main-sequence star systems">F-type main-sequence star systems</a></li></ul></td> </tr><tr><td class="sidebar-navbar"><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 ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini abbr{font-variant:small-caps;border-bottom:none;text-decoration:none;cursor:inherit}.mw-parser-output .navbar-ct-full{font-size:114%;margin:0 7em}.mw-parser-output .navbar-ct-mini{font-size:114%;margin:0 4em}html.skin-theme-clientpref-night .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}@media(prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .navbar li a abbr{color:var(--color-base)!important}}@media print{.mw-parser-output .navbar{display:none!important}}</style><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Life_in_the_Universe" title="Template:Life in the Universe"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Life_in_the_Universe" title="Template talk:Life in the Universe"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Life_in_the_Universe" title="Special:EditPage/Template:Life in the Universe"><abbr title="Edit this template">e</abbr></a></li></ul></div></td></tr></tbody></table> <p><a href="/wiki/K-type_main-sequence_star" title="K-type main-sequence star">K-type main-sequence stars</a>, also known as orange dwarfs, may be candidates for supporting <a href="/wiki/Extraterrestrial_life" title="Extraterrestrial life">extraterrestrial life</a>. These stars are known as "Goldilocks stars" as they emit enough <a href="/wiki/Radiation" title="Radiation">radiation</a> in the non-<a href="/wiki/Ultraviolet" title="Ultraviolet">UV ray spectrum</a><sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> to provide a temperature that allows liquid water to exist on the surface of a planet; they also remain stable in the <a href="/wiki/Main_sequence" title="Main sequence">main sequence</a> longer than the Sun by burning their hydrogen slower,<sup id="cite_ref-ShigaDavid_2-0" class="reference"><a href="#cite_note-ShigaDavid-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> allowing more time for <a href="/wiki/Abiogenesis" title="Abiogenesis">life to form</a> on a planet around a K-type main-sequence star.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> The planet's habitable zone, ranging from 0.1–0.4 to 0.3–1.3 <a href="/wiki/Astronomical_unit" title="Astronomical unit">astronomical units</a> (AU),<sup id="cite_ref-MerchantDavid_4-0" class="reference"><a href="#cite_note-MerchantDavid-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup class="noprint Inline-Template noprint noexcerpt Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:NOTRS" class="mw-redirect" title="Wikipedia:NOTRS"><span title="source is a blog (May 2023)">better source needed</span></a></i>]</sup> depending on the size of the star, is often far enough from the star so as not to be <a href="/wiki/Tidal_locking" title="Tidal locking">tidally locked</a> to the star, and to have a sufficiently low solar flare activity not to be lethal to life. In comparison, red dwarf stars have too much solar activity and quickly tidally lock the planets in their habitable zones, making them less suitable for life. The odds of complex life arising may be better on planets around K-type main-sequence stars than around Sun-like stars, given the suitable temperature and extra time available for it to evolve.<sup id="cite_ref-K-dwarf_Biodiversity_5-0" class="reference"><a href="#cite_note-K-dwarf_Biodiversity-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> Some planets around K-type main-sequence stars are potential candidates for extraterrestrial life.<sup id="cite_ref-ShigaDavid_2-1" class="reference"><a href="#cite_note-ShigaDavid-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Habitable_zone">Habitable zone</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Habitability_of_K-type_main-sequence_star_systems&action=edit&section=1" title="Edit section: Habitable zone"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>A K-type star's <a href="/wiki/Circumstellar_habitable_zone" class="mw-redirect" title="Circumstellar habitable zone">habitable zone</a> approximately ranges between 0.1–0.4 to 0.3–1.3 AU from the star. Here, exoplanets will receive only a relatively small amount of ultraviolet radiation, especially so towards the outer edge. This is favorable to support life, as it means that there is enough radiated energy to allow liquid water to exist on the surface, but not so much, especially ionizing radiation, as to destroy life.<sup id="cite_ref-MerchantDavid_4-1" class="reference"><a href="#cite_note-MerchantDavid-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> </p><p>The habitable zone is also very stable, lasting for most of the K-type main-sequence star's <a href="/wiki/Main_sequence" title="Main sequence">main sequence</a> phase and with little instability of luminosity during that phase.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Radiation_hazard">Radiation hazard</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Habitability_of_K-type_main-sequence_star_systems&action=edit&section=2" title="Edit section: Radiation hazard"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:61_Cygni_Proper_Motion.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/61_Cygni_Proper_Motion.gif/310px-61_Cygni_Proper_Motion.gif" decoding="async" width="310" height="133" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/48/61_Cygni_Proper_Motion.gif/465px-61_Cygni_Proper_Motion.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/48/61_Cygni_Proper_Motion.gif/620px-61_Cygni_Proper_Motion.gif 2x" data-file-width="1173" data-file-height="504" /></a><figcaption><a href="/wiki/61_Cygni" title="61 Cygni">61 Cygni</a>, a <a href="/wiki/Binary_star" title="Binary star">binary</a> K-type <a href="/wiki/Star_system" title="Star system">star system</a></figcaption></figure> <p>Despite K-stars' lower total UV output, in order for their planets to have habitable temperatures, they must orbit much nearer to their K-star hosts, offsetting or reversing any advantage of a lower total UV output. There is also growing evidence that K-type dwarf stars emit dangerously high levels of X-rays and far ultraviolet (FUV) radiation for considerably longer into their early <a href="/wiki/Main_sequence" title="Main sequence">main sequence</a> phase than do either heavier G-type stars or lighter early M-type dwarf stars.<sup id="cite_ref-Richey-YowellShkolnik2022_7-0" class="reference"><a href="#cite_note-Richey-YowellShkolnik2022-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> This prolonged radiation saturation period may sterilise, destroy the atmospheres of, or at least delay the emergence of life for Earth-like planets orbiting inside the habitable zones around K-type dwarf stars.<sup id="cite_ref-Richey-YowellShkolnik2022_7-1" class="reference"><a href="#cite_note-Richey-YowellShkolnik2022-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Potentially_habitable_planets">Potentially habitable planets</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Habitability_of_K-type_main-sequence_star_systems&action=edit&section=3" title="Edit section: Potentially habitable planets"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The <a href="/wiki/Super-Earth" title="Super-Earth">super-Earth</a> <a href="/wiki/HD_40307_g" title="HD 40307 g">HD 40307 g</a> around the K2.5V star <a href="/wiki/HD_40307" title="HD 40307">HD 40307</a> orbits in the circumstellar habitable zone (CHZ), although it has a reasonably elliptical orbit (<i>e</i>=0.22). There may be many more, and the <a href="/wiki/Kepler_space_telescope" title="Kepler space telescope">Kepler space telescope</a> (now retired) was one of the main sources of information of these exoplanets.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Kepler-62" title="Kepler-62">Kepler-62</a> and <a href="/wiki/Kepler-442" title="Kepler-442">Kepler-442</a> are examples of discoveries by Kepler of systems consisting of a K-type dwarf with potentially habitable planets orbiting it. </p><p><a href="/wiki/HD_85512_b" class="mw-redirect" title="HD 85512 b">HD 85512 b</a> was originally thought to be a super-Earth with habitability potential orbiting a K-type main-sequence star,<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> but it is now considered to be a false positive detection,<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> an artifact caused by <a href="/wiki/Stellar_rotation" title="Stellar rotation">stellar rotation</a>.<sup id="cite_ref-Laliotis2023_13-0" class="reference"><a href="#cite_note-Laliotis2023-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Habitability_of_K-type_main-sequence_star_systems&action=edit&section=4" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Astrobiology" title="Astrobiology">Astrobiology</a></li> <li><a href="/wiki/Circumstellar_habitable_zone" class="mw-redirect" title="Circumstellar habitable zone">Circumstellar habitable zone</a></li> <li><a href="/wiki/Habitability_of_F-type_main-sequence_star_systems" title="Habitability of F-type main-sequence star systems">Habitability of F-type main-sequence star systems</a></li> <li><a href="/wiki/Habitability_of_neutron_star_systems" title="Habitability of neutron star systems">Habitability of neutron star systems</a></li> <li><a href="/wiki/Habitability_of_red_dwarf_systems" title="Habitability of red dwarf systems">Habitability of red dwarf systems</a></li> <li><a href="/wiki/Habitability_of_yellow_dwarf_systems" title="Habitability of yellow dwarf systems">Habitability of yellow dwarf systems</a></li> <li><a href="/wiki/Planetary_habitability" title="Planetary habitability">Planetary habitability</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Habitability_of_K-type_main-sequence_star_systems&action=edit&section=5" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></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 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.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="CITEREFGrossman" class="citation news cs1">Grossman, Lisa. <a rel="nofollow" class="external text" href="https://www.sciencenews.org/article/sun-may-not-be-goldilocks-star">"Sun may not be a 'Goldilocks' star"</a>. Science News. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20211227140453/https://www.sciencenews.org/article/sun-may-not-be-goldilocks-star">Archived</a> from the original on 27 December 2021<span class="reference-accessdate">. Retrieved <span class="nowrap">16 April</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Sun+may+not+be+a+%27Goldilocks%27+star&rft.aulast=Grossman&rft.aufirst=Lisa&rft_id=https%3A%2F%2Fwww.sciencenews.org%2Farticle%2Fsun-may-not-be-goldilocks-star&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHabitability+of+K-type+main-sequence+star+systems" class="Z3988"></span></span> </li> <li id="cite_note-ShigaDavid-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-ShigaDavid_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-ShigaDavid_2-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFShiga" class="citation web cs1">Shiga, David. <a rel="nofollow" class="external text" href="https://www.newscientist.com/article/dn17084-orange-stars-are-just-right-for-life.html">"Orange stars are just right for life"</a>. <a href="/wiki/New_Scientist" title="New Scientist">New Scientist</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20150113045143/http://www.newscientist.com/article/dn17084-orange-stars-are-just-right-for-life.html">Archived</a> from the original on 13 January 2015<span class="reference-accessdate">. Retrieved <span class="nowrap">16 April</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Orange+stars+are+just+right+for+life&rft.pub=New+Scientist&rft.aulast=Shiga&rft.aufirst=David&rft_id=https%3A%2F%2Fwww.newscientist.com%2Farticle%2Fdn17084-orange-stars-are-just-right-for-life.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHabitability+of+K-type+main-sequence+star+systems" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVieru" class="citation news cs1">Vieru, Tudor. <a rel="nofollow" class="external text" href="http://news.softpedia.com/news/Life-Could-Easily-Develop-Around-Orange-Dwarfs-111006.shtml">"Life Could Easily Develop Around Orange Dwarfs"</a>. Softpedia. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140416192806/http://news.softpedia.com/news/Life-Could-Easily-Develop-Around-Orange-Dwarfs-111006.shtml">Archived</a> from the original on 16 April 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">16 April</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Life+Could+Easily+Develop+Around+Orange+Dwarfs&rft.aulast=Vieru&rft.aufirst=Tudor&rft_id=http%3A%2F%2Fnews.softpedia.com%2Fnews%2FLife-Could-Easily-Develop-Around-Orange-Dwarfs-111006.shtml&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHabitability+of+K-type+main-sequence+star+systems" class="Z3988"></span></span> </li> <li id="cite_note-MerchantDavid-4"><span class="mw-cite-backlink">^ <a href="#cite_ref-MerchantDavid_4-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-MerchantDavid_4-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMerchant2009" class="citation web cs1">Merchant, David (18 June 2009). <a rel="nofollow" class="external text" href="http://alienrealities.blogspot.co.uk/2009/06/orange-dwarf-stars-and-life-common.html">"Orange Dwarf Stars and Life – Common?"</a>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140416182159/http://alienrealities.blogspot.co.uk/2009/06/orange-dwarf-stars-and-life-common.html">Archived</a> from the original on 16 April 2014<span class="reference-accessdate">. Retrieved <span class="nowrap">16 April</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Orange+Dwarf+Stars+and+Life+%E2%80%93+Common%3F&rft.date=2009-06-18&rft.aulast=Merchant&rft.aufirst=David&rft_id=http%3A%2F%2Falienrealities.blogspot.co.uk%2F2009%2F06%2Forange-dwarf-stars-and-life-common.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHabitability+of+K-type+main-sequence+star+systems" class="Z3988"></span></span> </li> <li id="cite_note-K-dwarf_Biodiversity-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-K-dwarf_Biodiversity_5-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLoeb2017" class="citation journal cs1">Loeb, Abraham (2017). <a rel="nofollow" class="external text" href="https://doi.org/10.3847%2F2041-8213%2Faa8860">"Reduced biodiversity of life around Proxima Centauri and TRAPPIST-1"</a>. <i>The Astrophysical Journal Letters</i>. <b>846</b> (L21): L21. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/1707.07007">1707.07007</a></span>. <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/2017ApJ...846L..21L">2017ApJ...846L..21L</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.3847%2F2041-8213%2Faa8860">10.3847/2041-8213/aa8860</a></span>. <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:118880329">118880329</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+Letters&rft.atitle=Reduced+biodiversity+of+life+around+Proxima+Centauri+and+TRAPPIST-1&rft.volume=846&rft.issue=L21&rft.pages=L21&rft.date=2017&rft_id=info%3Aarxiv%2F1707.07007&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A118880329%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.3847%2F2041-8213%2Faa8860&rft_id=info%3Abibcode%2F2017ApJ...846L..21L&rft.aulast=Loeb&rft.aufirst=Abraham&rft_id=https%3A%2F%2Fdoi.org%2F10.3847%252F2041-8213%252Faa8860&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHabitability+of+K-type+main-sequence+star+systems" class="Z3988"></span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text">"Kepler's Hunt for Earths Shows Progress at Space Conference" Hadhazy, Adam March 9, 2010 12:00 AM</span> </li> <li id="cite_note-Richey-YowellShkolnik2022-7"><span class="mw-cite-backlink">^ <a href="#cite_ref-Richey-YowellShkolnik2022_7-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-Richey-YowellShkolnik2022_7-1"><sup><i><b>b</b></i></sup></a></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFRichey-YowellShkolnikLoydJackman2022" class="citation journal cs1">Richey-Yowell, Tyler; Shkolnik, Evgenya L.; Loyd, R.O. Parke; et al. (2022-04-26). <a rel="nofollow" class="external text" href="https://doi.org/10.3847%2F1538-4357%2Fac5f48">"HAZMAT. VIII. A spectroscopic analysis of the ultraviolet evolution of K stars: Additional evidence for K dwarf rotational stalling in the first gigayear"</a>. <i><a href="/wiki/The_Astrophysical_Journal" title="The Astrophysical Journal">The Astrophysical Journal</a></i>. <b>929</b> (2). <a href="/wiki/American_Astronomical_Society" title="American Astronomical Society">American Astronomical Society</a>: 169. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/2203.15237">2203.15237</a></span>. <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/2022ApJ...929..169R">2022ApJ...929..169R</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.3847%2F1538-4357%2Fac5f48">10.3847/1538-4357/ac5f48</a></span>.</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=HAZMAT.+VIII.+A+spectroscopic+analysis+of+the+ultraviolet+evolution+of+K+stars%3A+Additional+evidence+for+K+dwarf+rotational+stalling+in+the+first+gigayear&rft.volume=929&rft.issue=2&rft.pages=169&rft.date=2022-04-26&rft_id=info%3Aarxiv%2F2203.15237&rft_id=info%3Adoi%2F10.3847%2F1538-4357%2Fac5f48&rft_id=info%3Abibcode%2F2022ApJ...929..169R&rft.aulast=Richey-Yowell&rft.aufirst=Tyler&rft.au=Shkolnik%2C+Evgenya+L.&rft.au=Loyd%2C+R.O.+Parke&rft.au=Jackman%2C+James+A.G.&rft.au=Schneider%2C+Adam+C.&rft.au=Ag%C3%BCeros%2C+Marcel+A.&rft.au=Barman%2C+Travis&rft.au=Meadows%2C+Victoria+S.&rft.au=Gibson%2C+Rose&rft.au=Douglas%2C+Stephanie+T.&rft_id=https%3A%2F%2Fdoi.org%2F10.3847%252F1538-4357%252Fac5f48&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHabitability+of+K-type+main-sequence+star+systems" class="Z3988"></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFToubet,_Georgina2022" class="citation web cs1">Toubet, Georgina (22 April 2022). <a rel="nofollow" class="external text" href="https://www.slashgear.com/841058/what-uv-radiation-from-the-goldilocks-stars-could-really-mean/">"What UV radiation from the 'Goldilocks' stars could really mean"</a>. <i>slashgear.com</i>. <a rel="nofollow" class="external text" href="https://web.archive.org/web/20220520230814/https://www.slashgear.com/841058/what-uv-radiation-from-the-goldilocks-stars-could-really-mean/">Archived</a> from the original on 2022-05-20<span class="reference-accessdate">. Retrieved <span class="nowrap">2022-05-14</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=unknown&rft.jtitle=slashgear.com&rft.atitle=What+UV+radiation+from+the+%27Goldilocks%27+stars+could+really+mean&rft.date=2022-04-22&rft.au=Toubet%2C+Georgina&rft_id=https%3A%2F%2Fwww.slashgear.com%2F841058%2Fwhat-uv-radiation-from-the-goldilocks-stars-could-really-mean%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHabitability+of+K-type+main-sequence+star+systems" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text">Adam Hadhazy <a rel="nofollow" class="external text" href="http://www.popularmechanics.com/science/space/deep/4341707">Kepler's Hunt for Earths Shows Progress at Space Conference</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20100831060330/http://www.popularmechanics.com/science/space/deep/4341707">Archived</a> 2010-08-31 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>, <i>Popular Mechanics</i>, March 9, 2010</span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFKalteneggerS._UdryF._Pepe2011" class="citation arxiv cs1">Kaltenegger, L; S. Udry; F. Pepe (2011). "A Habitable Planet around HD 85512?". <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/1108.3561v1">1108.3561v1</a></span> [<a rel="nofollow" class="external text" href="https://arxiv.org/archive/astro-ph.EP">astro-ph.EP</a>].</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=preprint&rft.jtitle=arXiv&rft.atitle=A+Habitable+Planet+around+HD+85512%3F&rft.date=2011&rft_id=info%3Aarxiv%2F1108.3561v1&rft.aulast=Kaltenegger&rft.aufirst=L&rft.au=S.+Udry&rft.au=F.+Pepe&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHabitability+of+K-type+main-sequence+star+systems" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPepeLovis,_C.Ségransan,_D.Benz,_W.2011" class="citation journal cs1">Pepe, F.; Lovis, C.; Ségransan, D.; Benz, W.; Bouchy, F.; Dumusque, X.; et al. (3 October 2011). "The HARPS search for Earth-like planets in the habitable zone". <i>Astronomy & Astrophysics</i>. <b>534</b>: A58. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/1108.3447">1108.3447</a></span>. <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/2011A&A...534A..58P">2011A&A...534A..58P</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%2F201117055">10.1051/0004-6361/201117055</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:15088852">15088852</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=The+HARPS+search+for+Earth-like+planets+in+the+habitable+zone&rft.volume=534&rft.pages=A58&rft.date=2011-10-03&rft_id=info%3Aarxiv%2F1108.3447&rft_id=https%3A%2F%2Fapi.semanticscholar.org%2FCorpusID%3A15088852%23id-name%3DS2CID&rft_id=info%3Adoi%2F10.1051%2F0004-6361%2F201117055&rft_id=info%3Abibcode%2F2011A%26A...534A..58P&rft.aulast=Pepe&rft.aufirst=F.&rft.au=Lovis%2C+C.&rft.au=S%C3%A9gransan%2C+D.&rft.au=Benz%2C+W.&rft.au=Bouchy%2C+F.&rft.au=Dumusque%2C+X.&rft.au=Mayor%2C+M.&rft.au=Queloz%2C+D.&rft.au=Santos%2C+N.+C.&rft.au=Udry%2C+S.&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHabitability+of+K-type+main-sequence+star+systems" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://exoplanetarchive.ipac.caltech.edu/overview/HD_85512">"HD 85512 Overview"</a>. <a href="/wiki/NASA_Exoplanet_Archive" title="NASA Exoplanet Archive">NASA Exoplanet Archive</a><span class="reference-accessdate">. Retrieved <span class="nowrap">August 12,</span> 2024</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=HD+85512+Overview&rft.pub=NASA+Exoplanet+Archive&rft_id=https%3A%2F%2Fexoplanetarchive.ipac.caltech.edu%2Foverview%2FHD_85512&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHabitability+of+K-type+main-sequence+star+systems" class="Z3988"></span></span> </li> <li id="cite_note-Laliotis2023-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-Laliotis2023_13-0">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFLaliotisBurtMamajekLi2023" class="citation journal cs1">Laliotis, Katherine; Burt, Jennifer A.; Mamajek, Eric E.; et al. (22 February 2023). <a rel="nofollow" class="external text" href="https://doi.org/10.3847%2F1538-3881%2Facc067">"Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging Missions"</a>. <i>The Astronomical Journal</i>. <b>165</b> (4): 176. <a href="/wiki/ArXiv_(identifier)" class="mw-redirect" title="ArXiv (identifier)">arXiv</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://arxiv.org/abs/2302.10310">2302.10310</a></span>. <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/2023AJ....165..176L">2023AJ....165..176L</a>. <a href="/wiki/Doi_(identifier)" class="mw-redirect" title="Doi (identifier)">doi</a>:<span class="id-lock-free" title="Freely accessible"><a rel="nofollow" class="external text" href="https://doi.org/10.3847%2F1538-3881%2Facc067">10.3847/1538-3881/acc067</a></span>.</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=Doppler+Constraints+on+Planetary+Companions+to+Nearby+Sun-like+Stars%3A+An+Archival+Radial+Velocity+Survey+of+Southern+Targets+for+Proposed+NASA+Direct+Imaging+Missions&rft.volume=165&rft.issue=4&rft.pages=176&rft.date=2023-02-22&rft_id=info%3Aarxiv%2F2302.10310&rft_id=info%3Adoi%2F10.3847%2F1538-3881%2Facc067&rft_id=info%3Abibcode%2F2023AJ....165..176L&rft.aulast=Laliotis&rft.aufirst=Katherine&rft.au=Burt%2C+Jennifer+A.&rft.au=Mamajek%2C+Eric+E.&rft.au=Li%2C+Zhexing&rft.au=Perdelwitz%2C+Volker&rft.au=Zhao%2C+Jinglin&rft.au=Butler%2C+R.+Paul&rft.au=Holden%2C+Bradford&rft.au=Rosenthal%2C+Lee&rft.au=Fulton%2C+B.+J.&rft.au=Feng%2C+Fabo&rft.au=Kane%2C+Stephen+R.&rft.au=Bailey%2C+Jeremy&rft.au=Carter%2C+Brad&rft.au=Crane%2C+Jeffrey+D.&rft.au=Furlan%2C+Elise&rft.au=Gnilka%2C+Crystal+L.&rft.au=Howell%2C+Steve+B.&rft.au=Laughlin%2C+Gregory&rft.au=Shectman%2C+Stephen+A.&rft.au=Teske%2C+Johanna+K.&rft.au=Tinney%2C+C.+G.&rft.au=Vogt%2C+Steven+S.&rft.au=Wang%2C+Sharon+Xuesong&rft.au=Wittenmyer%2C+Robert+A.&rft_id=https%3A%2F%2Fdoi.org%2F10.3847%252F1538-3881%252Facc067&rfr_id=info%3Asid%2Fen.wikipedia.org%3AHabitability+of+K-type+main-sequence+star+systems" class="Z3988"></span></span> </li> </ol></div></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1236075235">.mw-parser-output .navbox{box-sizing:border-box;border:1px solid #a2a9b1;width:100%;clear:both;font-size:88%;text-align:center;padding:1px;margin:1em auto 0}.mw-parser-output .navbox .navbox{margin-top:0}.mw-parser-output .navbox+.navbox,.mw-parser-output .navbox+.navbox-styles+.navbox{margin-top:-1px}.mw-parser-output .navbox-inner,.mw-parser-output .navbox-subgroup{width:100%}.mw-parser-output .navbox-group,.mw-parser-output .navbox-title,.mw-parser-output .navbox-abovebelow{padding:0.25em 1em;line-height:1.5em;text-align:center}.mw-parser-output .navbox-group{white-space:nowrap;text-align:right}.mw-parser-output .navbox,.mw-parser-output .navbox-subgroup{background-color:#fdfdfd}.mw-parser-output .navbox-list{line-height:1.5em;border-color:#fdfdfd}.mw-parser-output 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href="/wiki/Template_talk:Astrobiology" title="Template talk:Astrobiology"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Astrobiology" title="Special:EditPage/Template:Astrobiology"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Astrobiology" style="font-size:114%;margin:0 4em"><a href="/wiki/Astrobiology" title="Astrobiology">Astrobiology</a></div></th></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Disciplines</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/Astrochemistry" title="Astrochemistry">Astrochemistry</a></li> <li><a href="/wiki/Astrophysics" title="Astrophysics">Astrophysics</a></li> <li><a href="/wiki/Atmospheric_sciences" class="mw-redirect" title="Atmospheric sciences">Atmospheric sciences</a></li> <li><a href="/wiki/Biochemistry" title="Biochemistry">Biochemistry</a></li> <li><a href="/wiki/Evolutionary_biology" title="Evolutionary biology">Evolutionary biology</a></li> <li><a href="/wiki/Exoplanetology" class="mw-redirect" title="Exoplanetology">Exoplanetology</a></li> <li><a href="/wiki/Geomicrobiology" title="Geomicrobiology">Geomicrobiology</a></li> <li><a href="/wiki/Microbiology" title="Microbiology">Microbiology</a></li> <li><a href="/wiki/Paleontology" title="Paleontology">Paleontology</a></li> <li><a href="/wiki/Planetary_oceanography" title="Planetary oceanography">Planetary oceanography</a></li> <li><a href="/wiki/Planetary_science" title="Planetary science">Planetary science</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Main topics</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/Abiogenesis" title="Abiogenesis">Abiogenesis</a></li> <li><a href="/wiki/Allan_Hills_84001" title="Allan Hills 84001">Allan Hills 84001</a></li> <li><a href="/wiki/Biomolecule" title="Biomolecule">Biomolecule</a></li> <li><a href="/wiki/Biosignature" title="Biosignature">Biosignature</a></li> <li><a href="/wiki/Drake_equation" title="Drake equation">Drake equation</a></li> <li><a href="/wiki/Earliest_known_life_forms" title="Earliest known life forms">Earliest known life forms</a></li> <li><a href="/wiki/Earth_analog" title="Earth analog">Earth analog</a></li> <li><a href="/wiki/Extraterrestrial_life" title="Extraterrestrial life">Extraterrestrial life</a></li> <li><a href="/wiki/Extraterrestrial_sample_curation" title="Extraterrestrial sample curation">Extraterrestrial sample curation</a></li> <li><a href="/wiki/Extremophile" title="Extremophile">Extremophiles</a></li> <li><a href="/wiki/Hypothetical_types_of_biochemistry" title="Hypothetical types of biochemistry">Hypothetical types of biochemistry</a></li> <li><a href="/wiki/List_of_microorganisms_tested_in_outer_space" title="List of microorganisms tested in outer space">List of microorganisms tested in outer space</a></li> <li><a href="/wiki/Ocean_planet" class="mw-redirect" title="Ocean planet">Ocean planet</a></li> <li><a href="/wiki/Panspermia" title="Panspermia">Panspermia</a></li> <li><a href="/wiki/Planetary_protection" title="Planetary protection">Planetary protection</a></li> <li><a href="/wiki/Search_for_extraterrestrial_intelligence" title="Search for extraterrestrial intelligence">Search for extraterrestrial intelligence (SETI)</a></li> <li><a href="/wiki/Yamato_000593" title="Yamato 000593">Yamato meteorite</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Planetary_habitability" title="Planetary habitability">Planetary<br />habitability</a></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/Circumstellar_habitable_zone" class="mw-redirect" title="Circumstellar habitable zone">Circumstellar habitable zone</a></li> <li><a href="/wiki/Earth_analog" title="Earth analog">Earth analog</a></li> <li><a href="/wiki/Extraterrestrial_liquid_water" title="Extraterrestrial liquid water">Extraterrestrial liquid water</a></li> <li><a href="/wiki/Galactic_habitable_zone" title="Galactic habitable zone">Galactic habitable zone</a></li> <li><a href="/wiki/Habitability_of_binary_star_systems" title="Habitability of binary star systems">Habitability of binary star systems</a></li> <li><a href="/wiki/Habitability_of_natural_satellites" title="Habitability of natural satellites">Habitability of natural satellites</a></li> <li><a href="/wiki/Habitability_of_neutron_star_systems" title="Habitability of neutron star systems">Habitability of neutron star systems</a></li> <li><a href="/wiki/Habitability_of_red_dwarf_systems" title="Habitability of red dwarf systems">Habitability of red dwarf systems</a></li> <li><a class="mw-selflink selflink">Habitability of K-type main-sequence star systems</a></li> <li><a href="/wiki/Habitability_of_yellow_dwarf_systems" title="Habitability of yellow dwarf systems">Habitability of yellow dwarf systems</a></li> <li><a href="/wiki/Habitability_of_F-type_main-sequence_star_systems" title="Habitability of F-type main-sequence star systems">Habitability of F-type main-sequence star systems</a></li> <li><a href="/wiki/Habitable_zone_for_complex_life" title="Habitable zone for complex life">Habitable zone for complex life</a></li> <li><a href="/wiki/List_of_potentially_habitable_exoplanets" title="List of potentially habitable exoplanets">List of potentially habitable exoplanets</a></li> <li><a href="/wiki/Tholin" title="Tholin">Tholin</a></li> <li><a href="/wiki/Superhabitable_planet" class="mw-redirect" title="Superhabitable planet">Superhabitable planet</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Space<br /> missions</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;text-align: center;">Earth orbit</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/Space_Flyer_Unit#Experimentation_data" title="Space Flyer Unit">BIO</a></li> <li><a href="/wiki/Apollo_17#Biological_cosmic_ray_experiment" title="Apollo 17">BIOCORE</a></li> <li><a href="/wiki/Biolab" title="Biolab">Biolab</a></li> <li><a href="/wiki/Bion_(satellite)" title="Bion (satellite)">Bion</a></li> <li><a href="/wiki/BIOPAN" title="BIOPAN">BIOPAN</a></li> <li><a href="/wiki/Biosatellite_program" title="Biosatellite program">Biosatellite program</a></li> <li><a href="/wiki/Exposing_Microorganisms_in_the_Stratosphere" title="Exposing Microorganisms in the Stratosphere">E-MIST</a></li> <li><a href="/wiki/Exobiology_Radiation_Assembly" title="Exobiology Radiation Assembly">ERA</a></li> <li><a href="/wiki/EuCROPIS" title="EuCROPIS">Eu:CROPIS</a></li> <li><a href="/wiki/Long_Duration_Exposure_Facility#EXOSTACK" title="Long Duration Exposure Facility">EXOSTACK</a></li> <li><a href="/wiki/EXPOSE" title="EXPOSE">EXPOSE</a></li> <li><a href="/wiki/Chang%27e_4#Lunar_lander" title="Chang'e 4">Lunar Micro Ecosystem</a></li> <li><a href="/wiki/O/OREOS" title="O/OREOS">O/OREOS</a></li> <li><a href="/wiki/OREOcube" title="OREOcube">OREOcube</a></li> <li><a href="/wiki/Tanpopo_(mission)" class="mw-redirect" title="Tanpopo (mission)">Tanpopo</a></li> <li><a href="/wiki/Vegetable_Production_System" title="Vegetable Production System">VEGGIE</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: center;">Mars</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/Beagle_2" title="Beagle 2">Beagle 2</a></li> <li><a href="/wiki/Fobos-Grunt" title="Fobos-Grunt">Fobos-Grunt</a></li> <li><a href="/wiki/Mars_Science_Laboratory" title="Mars Science Laboratory">Mars Science Laboratory</a> <ul><li><a href="/wiki/Curiosity_(rover)" title="Curiosity (rover)"><i>Curiosity</i> rover</a></li></ul></li> <li><a href="/wiki/Mars_2020" title="Mars 2020">Mars 2020</a> <ul><li><a href="/wiki/Perseverance_(rover)" title="Perseverance (rover)"><i>Perseverance</i> rover</a></li></ul></li> <li><i><a href="/wiki/Phoenix_(spacecraft)" title="Phoenix (spacecraft)">Phoenix</a></i></li> <li><a href="/wiki/Tianwen-1" title="Tianwen-1">Tianwen-1</a> <ul><li><a href="/wiki/Zhurong_(rover)" title="Zhurong (rover)"><i>Zhurong</i> rover</a></li></ul></li> <li><a href="/wiki/Trace_Gas_Orbiter" title="Trace Gas Orbiter">Trace Gas Orbiter</a></li> <li><a href="/wiki/Viking_lander_biological_experiments" title="Viking lander biological experiments">Viking</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: center;">Comets and<br />asteroids</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Hayabusa2" title="Hayabusa2">Hayabusa2</a></i></li> <li><a href="/wiki/OSIRIS-REx" title="OSIRIS-REx">OSIRIS-REx</a></li> <li><i><a href="/wiki/Rosetta_(spacecraft)" title="Rosetta (spacecraft)">Rosetta</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: center;">Heliocentric</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/BioSentinel" title="BioSentinel">BioSentinel</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: center;">Planned</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><i><a href="/wiki/Dragonfly_(Titan_space_probe)" title="Dragonfly (Titan space probe)">Dragonfly</a></i></li> <li><a href="/wiki/Europa_Clipper" title="Europa Clipper">Europa Clipper</a></li> <li><a href="/wiki/ExoMars" title="ExoMars">ExoMars</a> <ul><li><a href="/wiki/Rosalind_Franklin_(rover)" title="Rosalind Franklin (rover)"><i>Rosalind Franklin</i> rover</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: center;">Proposed</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/Breakthrough_Enceladus_mission" title="Breakthrough Enceladus mission">Breakthrough Enceladus</a></li> <li><a href="/wiki/BRUIE" title="BRUIE">BRUIE</a></li> <li><a href="/wiki/CAESAR_(spacecraft)" title="CAESAR (spacecraft)">CAESAR</a></li> <li><a href="/wiki/Enceladus_Explorer" title="Enceladus Explorer">Enceladus Explorer</a></li> <li><a href="/wiki/Enceladus_Life_Finder" title="Enceladus Life Finder">Enceladus Life Finder‎</a></li> <li><a href="/wiki/Enceladus_Life_Signatures_and_Habitability" title="Enceladus Life Signatures and Habitability">Enceladus Life Signatures and Habitability</a></li> <li><a href="/wiki/Enceladus_Orbilander" title="Enceladus Orbilander">Enceladus Orbilander</a></li> <li><a href="/wiki/Europa_Lander_(NASA)" class="mw-redirect" title="Europa Lander (NASA)">Europa Lander</a></li> <li><a href="/wiki/ExoLance" title="ExoLance">ExoLance</a></li> <li><a href="/wiki/Explorer_of_Enceladus_and_Titan" title="Explorer of Enceladus and Titan">Explorer of Enceladus and Titan</a></li> <li><a href="/wiki/Icebreaker_Life" title="Icebreaker Life">Icebreaker Life</a></li> <li><a href="/wiki/Journey_to_Enceladus_and_Titan" title="Journey to Enceladus and Titan">Journey to Enceladus and Titan</a></li> <li><a href="/wiki/Laplace-P" title="Laplace-P">Laplace-P</a></li> <li><a href="/wiki/Life_Investigation_For_Enceladus" title="Life Investigation For Enceladus">Life Investigation For Enceladus</a></li> <li><a href="/wiki/Mars_sample_return_mission" class="mw-redirect" title="Mars sample return mission">Mars sample return mission</a></li> <li><a href="/wiki/Oceanus_(Titan_orbiter)" title="Oceanus (Titan orbiter)">Oceanus</a></li> <li><a href="/wiki/THEO" title="THEO">THEO</a></li> <li><a href="/wiki/Trident_(spacecraft)" title="Trident (spacecraft)">Trident</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: center;">Cancelled and <br />undeveloped</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/Astrobiology_Field_Laboratory" title="Astrobiology Field Laboratory">Astrobiology Field Laboratory</a></li> <li><a href="/wiki/Beagle_3" title="Beagle 3">Beagle 3</a></li> <li><a href="/wiki/Biological_Oxidant_and_Life_Detection" title="Biological Oxidant and Life Detection">Biological Oxidant and Life Detection</a></li> <li><a href="/wiki/Kazachok" title="Kazachok">Kazachok</a></li> <li><a href="/wiki/Living_Interplanetary_Flight_Experiment" title="Living Interplanetary Flight Experiment">Living Interplanetary Flight Experiment</a></li> <li><a href="/wiki/Mars_Astrobiology_Explorer-Cacher" title="Mars Astrobiology Explorer-Cacher">Mars Astrobiology Explorer-Cacher</a></li> <li><a href="/wiki/MELOS" title="MELOS">MELOS</a></li> <li><a href="/wiki/Northern_Light_(spacecraft)" title="Northern Light (spacecraft)">Northern Light</a></li> <li><a href="/wiki/SpaceX_Red_Dragon" title="SpaceX Red Dragon">Red Dragon</a></li> <li><a href="/wiki/Terrestrial_Planet_Finder" title="Terrestrial Planet Finder">Terrestrial Planet Finder</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Institutions<br />and programs</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/Astrobiology_Society_of_Britain" title="Astrobiology Society of Britain">Astrobiology Society of Britain</a></li> <li><a href="/wiki/Astrobiology_Science_and_Technology_for_Exploring_Planets" title="Astrobiology Science and Technology for Exploring Planets">Astrobiology Science and Technology for Exploring Planets</a></li> <li><a href="/wiki/Breakthrough_Initiatives" title="Breakthrough Initiatives">Breakthrough Initiatives</a> <ul><li><a href="/wiki/Breakthrough_Listen" title="Breakthrough Listen">Breakthrough Listen</a></li> <li><a href="/wiki/Breakthrough_Message" class="mw-redirect" title="Breakthrough Message">Breakthrough Message</a></li> <li><a href="/wiki/Breakthrough_Starshot" title="Breakthrough Starshot">Breakthrough Starshot</a></li></ul></li> <li><a href="/wiki/Carl_Sagan_Institute" title="Carl Sagan Institute">Carl Sagan Institute</a></li> <li><a href="/wiki/Center_for_Life_Detection_Science" class="mw-redirect" title="Center for Life Detection Science">Center for Life Detection Science</a></li> <li><a href="/wiki/European_Astrobiology_Network_Association" title="European Astrobiology Network Association">European Astrobiology Network Association</a></li> <li><a href="/wiki/MERMOZ" title="MERMOZ">MERMOZ</a></li> <li><a href="/wiki/NASA_Astrobiology_Institute" title="NASA Astrobiology Institute">NASA Astrobiology Institute</a></li> <li><a href="/wiki/Nexus_for_Exoplanet_System_Science" title="Nexus for Exoplanet System Science">Nexus for Exoplanet System Science</a></li> <li><a href="/wiki/Ocean_Worlds_Exploration_Program" title="Ocean Worlds Exploration Program">Ocean Worlds Exploration Program</a></li> <li><a href="/wiki/Spanish_Astrobiology_Center" title="Spanish Astrobiology Center">Spanish Astrobiology Center‎</a></li></ul> </div></td></tr><tr><td class="navbox-abovebelow" colspan="2" style="text-align: center;"><div> <ul><li><span class="noviewer" typeof="mw:File"><span title="Category"><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" /></span></span> <b><a href="/wiki/Category:Astrobiology" title="Category:Astrobiology">Category</a></b></li> <li><span class="noviewer" typeof="mw:File"><span title="Commons page"><img alt="" src="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/12px-Commons-logo.svg.png" decoding="async" width="12" height="16" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/18px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/24px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></span></span> <b><a href="https://commons.wikimedia.org/wiki/Category:Astrobiology" class="extiw" title="commons:Category:Astrobiology">Commons</a></b></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="Extraterrestrial_life" 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" style="text-align: center;"><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:Extraterrestrial_life" title="Template:Extraterrestrial life"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Extraterrestrial_life" title="Template talk:Extraterrestrial life"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Extraterrestrial_life" title="Special:EditPage/Template:Extraterrestrial life"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Extraterrestrial_life" style="font-size:114%;margin:0 4em"><a href="/wiki/Extraterrestrial_life" title="Extraterrestrial life">Extraterrestrial life</a></div></th></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Events and objects</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Shergotty_meteorite" title="Shergotty meteorite">Shergotty meteorite</a> (1865)</li> <li><a href="/wiki/Nakhla_meteorite" title="Nakhla meteorite">Nakhla meteorite</a> (1911)</li> <li><a href="/wiki/Murchison_meteorite" title="Murchison meteorite">Murchison meteorite</a> (1969)</li> <li><a href="/wiki/Viking_lander_biological_experiments" title="Viking lander biological experiments">Viking lander biological experiments</a> (1976)</li> <li><a href="/wiki/Allan_Hills_77005" title="Allan Hills 77005">Allan Hills 77005</a> (1977)</li> <li><a href="/wiki/Allan_Hills_84001" title="Allan Hills 84001">Allan Hills 84001</a> (1984)</li> <li><a href="/wiki/Yamato_000593" title="Yamato 000593">Yamato 000593</a> (2000)</li> <li><a href="/wiki/CI1_fossils" title="CI1 fossils">CI1 fossils</a> (2011)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Signals of interest</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%;text-align: center;">Misidentified</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/PSR_B1919%2B21" title="PSR B1919+21">CP 1919</a> <span style="font-size:85%;">(misidentified pulsar)</span></li> <li><a href="/wiki/CTA-102" title="CTA-102">CTA-102</a> <span style="font-size:85%;">(misidentified quasar)</span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: center;">Stars</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/Tabby%27s_Star" title="Tabby's Star">KIC 8462852</a> <span style="font-size:85%;">(unusual light fluctuations)</span></li> <li><a href="/wiki/EPIC_204278916" title="EPIC 204278916">EPIC 204278916</a> <span style="font-size:85%;">(unusual light fluctuations)</span></li> <li><a href="/wiki/VVV-WIT-07" title="VVV-WIT-07">VVV-WIT-07</a> <span style="font-size:85%;">(unusual light fluctuations)</span></li> <li><a href="/wiki/HD_164595" title="HD 164595">HD 164595 signal</a> <span style="font-size:85%;">(unknown origin)</span></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%;text-align: center;">Other</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/SHGb02%2B14a" title="SHGb02+14a">SHGb02+14a</a> <span style="font-size:85%;">(radio source)</span></li> <li><a href="/wiki/Wow!_signal" title="Wow! signal">Wow! signal</a> <span style="font-size:85%;">(inconclusive)</span></li> <li><a href="/wiki/Fast_radio_burst" title="Fast radio burst">Fast radio burst</a> <span style="font-size:85%;">(unknown origin)</span></li> <li><a href="/wiki/BLC1" title="BLC1">BLC1</a> <span style="font-size:85%;">(radio signal)</span></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Life in the Universe</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Earliest_known_life_forms" title="Earliest known life forms">Earliest known life forms</a></li> <li><a href="/wiki/Planetary_habitability_in_the_Solar_System" title="Planetary habitability in the Solar System">Planetary habitability in the Solar System</a></li> <li><a href="/wiki/Life_on_Venus" title="Life on Venus">Life on Venus</a></li> <li><a href="/wiki/Life_on_Mars" title="Life on Mars">Life on Mars</a></li> <li><a href="/wiki/Life_on_Titan" title="Life on Titan">Life on Titan</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Planetary_habitability" title="Planetary habitability">Planetary<br />habitability</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Catalog_of_Nearby_Habitable_Systems" title="Catalog of Nearby Habitable Systems">Catalog of Nearby Habitable Systems</a></li> <li><a href="/wiki/Circumstellar_habitable_zone" class="mw-redirect" title="Circumstellar habitable zone">Circumstellar habitable zone</a></li> <li><a href="/wiki/Earth_analog" title="Earth analog">Earth analog</a></li> <li><a href="/wiki/Extraterrestrial_liquid_water" title="Extraterrestrial liquid water">Extraterrestrial liquid water</a></li> <li><a href="/wiki/Galactic_habitable_zone" title="Galactic habitable zone">Galactic habitable zone</a></li> <li><a href="/wiki/Habitability_of_binary_star_systems" title="Habitability of binary star systems">Habitability of binary star systems</a></li> <li><a href="/wiki/Habitability_of_natural_satellites" title="Habitability of natural satellites">Habitability of natural satellites</a></li> <li><a href="/wiki/Habitability_of_neutron_star_systems" title="Habitability of neutron star systems">Habitability of neutron star systems</a></li> <li><a href="/wiki/Habitability_of_red_dwarf_systems" title="Habitability of red dwarf systems">Habitability of red dwarf systems</a></li> <li><a class="mw-selflink selflink">Habitability of K-type main-sequence star systems</a></li> <li><a href="/wiki/Habitability_of_yellow_dwarf_systems" title="Habitability of yellow dwarf systems">Habitability of yellow dwarf systems</a></li> <li><a href="/wiki/Habitability_of_F-type_main-sequence_star_systems" title="Habitability of F-type main-sequence star systems">Habitability of F-type main-sequence star systems</a></li> <li><a href="/wiki/List_of_potentially_habitable_exoplanets" title="List of potentially habitable exoplanets">List of potentially habitable exoplanets</a></li> <li><a href="/wiki/Planetary_habitability" title="Planetary habitability">Planetary habitability</a></li> <li><a href="/wiki/Superhabitable_planet" class="mw-redirect" title="Superhabitable planet">Superhabitable planet</a></li> <li><a href="/wiki/Tholin" title="Tholin">Tholin</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Astrobiology#Missions" title="Astrobiology">Space missions</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Beagle_2" title="Beagle 2">Beagle 2</a></li> <li><a href="/wiki/Biological_Oxidant_and_Life_Detection" title="Biological Oxidant and Life Detection">Biological Oxidant and Life Detection</a></li> <li><a href="/wiki/BioSentinel" title="BioSentinel">BioSentinel</a></li> <li><a href="/wiki/Curiosity_(rover)" title="Curiosity (rover)"><i>Curiosity</i> rover</a></li> <li><i><a href="/wiki/Darwin_(spacecraft)" title="Darwin (spacecraft)">Darwin</a></i></li> <li><i><a href="/wiki/Dragonfly_(Titan_space_probe)" title="Dragonfly (Titan space probe)">Dragonfly</a></i></li> <li><a href="/wiki/Enceladus_Explorer" title="Enceladus Explorer">Enceladus Explorer</a></li> <li><a href="/wiki/Enceladus_Life_Finder" title="Enceladus Life Finder">Enceladus Life Finder</a></li> <li><i><a href="/wiki/Europa_Clipper" title="Europa Clipper">Europa Clipper</a></i></li> <li><a href="/wiki/ExoMars" title="ExoMars">ExoMars</a> <ul><li><a href="/wiki/Rosalind_Franklin_(rover)" title="Rosalind Franklin (rover)"><i>Rosalind Franklin</i> rover</a></li></ul></li> <li><a href="/wiki/ExoLance" title="ExoLance">ExoLance</a></li> <li><a href="/wiki/EXPOSE" title="EXPOSE">EXPOSE</a></li> <li><a href="/wiki/Foton-M" class="mw-redirect" title="Foton-M">Foton-M3</a></li> <li><a href="/wiki/Icebreaker_Life" title="Icebreaker Life">Icebreaker Life</a></li> <li><a href="/wiki/Journey_to_Enceladus_and_Titan" title="Journey to Enceladus and Titan">Journey to Enceladus and Titan</a></li> <li><a href="/wiki/Laplace-P" title="Laplace-P">Laplace-P</a></li> <li><a href="/wiki/Life_Investigation_For_Enceladus" title="Life Investigation For Enceladus">Life Investigation For Enceladus</a></li> <li><a href="/wiki/Living_Interplanetary_Flight_Experiment" title="Living Interplanetary Flight Experiment">Living Interplanetary Flight Experiment</a></li> <li><a href="/wiki/Mars_Geyser_Hopper" title="Mars Geyser Hopper">Mars Geyser Hopper</a></li> <li><a href="/wiki/Mars_sample-return_mission" title="Mars sample-return mission">Mars sample-return mission</a></li> <li><a href="/wiki/Mars_2020" title="Mars 2020">Mars 2020</a></li> <li><a href="/wiki/Northern_Light_(spacecraft)" title="Northern Light (spacecraft)">Northern Light</a></li> <li><a href="/wiki/Opportunity_(rover)" title="Opportunity (rover)"><i>Opportunity</i> rover</a></li> <li><a href="/wiki/Perseverance_(rover)" title="Perseverance (rover)"><i>Perseverance</i> rover</a></li> <li><a href="/wiki/SpaceX_Red_Dragon" title="SpaceX Red Dragon">SpaceX Red Dragon</a></li> <li><a href="/wiki/Spirit_(rover)" title="Spirit (rover)"><i>Spirit</i> rover</a></li> <li><a href="/wiki/Tanpopo_mission" title="Tanpopo mission">Tanpopo</a></li> <li><a href="/wiki/Titan_Mare_Explorer" title="Titan Mare Explorer">Titan Mare Explorer</a></li> <li><a href="/wiki/Venus_In_Situ_Explorer" title="Venus In Situ Explorer">Venus In Situ Explorer</a></li> <li><i><a href="/wiki/Viking_1" title="Viking 1">Viking 1</a></i></li> <li><i><a href="/wiki/Viking_2" title="Viking 2">Viking 2</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Interstellar_communication" title="Interstellar communication">Interstellar<br />communication</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Active_SETI" title="Active SETI">Active SETI</a></li> <li><a href="/wiki/Allen_Telescope_Array" title="Allen Telescope Array">Allen Telescope Array</a></li> <li><a href="/wiki/Arecibo_message" title="Arecibo message">Arecibo message</a></li> <li><a href="/wiki/Arecibo_Observatory" title="Arecibo Observatory">Arecibo Observatory</a></li> <li><a href="/wiki/Berkeley_SETI_Research_Center" title="Berkeley SETI Research Center">Berkeley SETI Research Center</a></li> <li><a href="/wiki/Bracewell_probe" title="Bracewell probe">Bracewell probe</a></li> <li><a href="/wiki/Breakthrough_Initiatives" title="Breakthrough Initiatives">Breakthrough Initiatives</a> <ul><li><a href="/wiki/Breakthrough_Listen" title="Breakthrough Listen">Breakthrough Listen</a></li> <li><a href="/wiki/Breakthrough_Message" class="mw-redirect" title="Breakthrough Message">Breakthrough Message</a></li></ul></li> <li><a href="/wiki/Communication_with_extraterrestrial_intelligence" title="Communication with extraterrestrial intelligence">Communication with extraterrestrial intelligence</a></li> <li><a href="/wiki/Gauss%27s_Pythagorean_right_triangle_proposal" title="Gauss's Pythagorean right triangle proposal">Gauss's Pythagorean right triangle proposal</a></li> <li><a href="/wiki/Astrolinguistics" title="Astrolinguistics">Astrolinguistics</a></li> <li><a href="/wiki/Lincos_language" title="Lincos language">Lincos language</a></li> <li><a href="/wiki/NIROSETI" title="NIROSETI">NIROSETI</a></li> <li><a href="/wiki/Pioneer_plaque" title="Pioneer plaque">Pioneer plaque</a></li> <li><a href="/wiki/Project_Cyclops" title="Project Cyclops">Project Cyclops</a></li> <li><a href="/wiki/Project_Ozma" title="Project Ozma">Project Ozma</a></li> <li><a href="/wiki/Project_Phoenix_(SETI)" title="Project Phoenix (SETI)">Project Phoenix</a></li> <li><a href="/wiki/SERENDIP" title="SERENDIP">SERENDIP</a></li> <li><a href="/wiki/Search_for_extraterrestrial_intelligence" title="Search for extraterrestrial intelligence">Search for extraterrestrial intelligence</a></li> <li><a href="/wiki/SETI@home" title="SETI@home">SETI@home</a></li> <li><a href="/wiki/SetiQuest" title="SetiQuest">setiQuest</a></li> <li><a href="/wiki/Voyager_Golden_Record" title="Voyager Golden Record">Voyager Golden Record</a></li> <li><a href="/wiki/Water_hole_(radio)" title="Water hole (radio)">Water hole</a></li> <li><a href="/wiki/Alien_language" title="Alien language">Xenolinguistics</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/List_of_alleged_extraterrestrial_beings" title="List of alleged extraterrestrial beings">Types of alleged<br /> extraterrestrial beings</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Energy_being" title="Energy being">Energy beings</a></li> <li><a href="/wiki/Grey_alien" title="Grey alien">Grey aliens</a></li> <li><a href="/wiki/Insectoids_in_science_fiction" class="mw-redirect" title="Insectoids in science fiction">Insectoids</a></li> <li><a href="/wiki/Little_green_men" title="Little green men">Little green men</a></li> <li><a href="/wiki/Nordic_aliens" title="Nordic aliens">Nordic aliens</a></li> <li><a href="/wiki/Reptilian_humanoid" title="Reptilian humanoid">Reptilian humanoids</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%">Hypotheses</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Cosmic_pluralism" title="Cosmic pluralism">Cosmic pluralism</a></li> <li><a href="/wiki/Directed_panspermia" title="Directed panspermia">Directed panspermia</a></li> <li><a href="/wiki/Drake_equation" title="Drake equation">Drake equation</a></li> <li><a href="/wiki/Extraterrestrial_hypothesis" class="mw-redirect" title="Extraterrestrial hypothesis">Extraterrestrial hypothesis</a></li> <li><a href="/wiki/Fermi_paradox" title="Fermi paradox">Fermi paradox</a></li> <li><a href="/wiki/Hypothetical_types_of_biochemistry" title="Hypothetical types of biochemistry">Hypothetical types of biochemistry</a></li> <li><a href="/wiki/Interplanetary_contamination" title="Interplanetary contamination">Interplanetary contamination</a></li> <li><a href="/wiki/Kardashev_scale" title="Kardashev scale">Kardashev scale</a></li> <li><a href="/wiki/Mediocrity_principle" title="Mediocrity principle">Mediocrity principle</a></li> <li><a href="/wiki/Panspermia" title="Panspermia">Panspermia</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Fermi_paradox" title="Fermi paradox">Fermi paradox</a> solutions</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aestivation_hypothesis" title="Aestivation hypothesis">Aestivation hypothesis</a></li> <li><a href="/wiki/Berserker_hypothesis" title="Berserker hypothesis">Berserker hypothesis</a></li> <li><a href="/wiki/Dark_forest_hypothesis" title="Dark forest hypothesis">Dark forest hypothesis</a></li> <li><a href="/wiki/Firstborn_hypothesis" title="Firstborn hypothesis">Firstborn hypothesis</a></li> <li><a href="/wiki/Great_Filter" title="Great Filter">Great Filter</a></li> <li><a href="/wiki/Hart%E2%80%93Tipler_conjecture" title="Hart–Tipler conjecture">Hart–Tipler conjecture</a></li> <li><a href="/wiki/Neocatastrophism" title="Neocatastrophism">Neocatastrophism</a></li> <li><a href="/wiki/Planetarium_hypothesis" title="Planetarium hypothesis">Planetarium hypothesis</a></li> <li><a href="/wiki/Rare_Earth_hypothesis" title="Rare Earth hypothesis">Rare Earth hypothesis</a></li> <li><a href="/wiki/Zoo_hypothesis" title="Zoo hypothesis">Zoo hypothesis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="text-align: center;;width:1%"><a href="/wiki/Outline_of_extraterrestrial_life" title="Outline of extraterrestrial life">Related topics</a></th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Ancient_astronauts" title="Ancient astronauts">Ancient astronauts</a></li> <li><a href="/wiki/Astrobiology" title="Astrobiology">Astrobiology</a></li> <li><a href="/wiki/Astroecology" title="Astroecology">Astroecology</a></li> <li><a href="/wiki/Biosignature" title="Biosignature">Biosignature</a></li> <li><a href="/wiki/Brookings_Report" title="Brookings Report">Brookings Report</a></li> <li><a href="/wiki/Exotheology" title="Exotheology">Exotheology</a></li> <li><a href="/wiki/Extraterrestrials_in_fiction" title="Extraterrestrials in fiction">Extraterrestrials in fiction</a></li> <li><a href="/wiki/Extremophile" title="Extremophile">Extremophile</a></li> <li><a href="/wiki/Hemolithin" title="Hemolithin">Hemolithin</a></li> <li><a href="/wiki/History_of_the_extraterrestrial_life_debate" title="History of the extraterrestrial life debate">History of the extraterrestrial life debate</a></li> <li><a href="/wiki/MERMOZ" title="MERMOZ">MERMOZ</a></li> <li><a href="/wiki/Nexus_for_Exoplanet_System_Science" title="Nexus for Exoplanet System Science">Nexus for Exoplanet System Science</a></li> <li><a href="/wiki/Noosphere" title="Noosphere">Noogenesis</a></li> <li><a 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