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id="n-recentchanges" class="mw-list-item"><a href="/wiki/Istimewa:Perubahan_terbaru" title="Daftar perubahan terbaru dalam wiki. [r]" accesskey="r"><span>Perubahan terbaru</span></a></li><li id="n-Artikel-pilihan" class="mw-list-item"><a href="/wiki/Wikipedia:Artikel_pilihan/Topik"><span>Artikel pilihan</span></a></li><li id="n-currentevents" class="mw-list-item"><a href="/wiki/Portal:Peristiwa_terkini" title="Temukan informasi tentang peristiwa terkini"><span>Peristiwa terkini</span></a></li><li id="n-newpage" class="mw-list-item"><a href="/wiki/Istimewa:Halaman_baru"><span>Halaman baru</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Istimewa:Halaman_sembarang" title="Tampilkan sembarang halaman [x]" accesskey="x"><span>Halaman sembarang</span></a></li> </ul> </div> </div> <div id="p-Komunitas" class="vector-menu mw-portlet mw-portlet-Komunitas" > <div class="vector-menu-heading"> Komunitas </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-Warung-Kopi" class="mw-list-item"><a href="/wiki/Wikipedia:Warung_Kopi"><span>Warung Kopi</span></a></li><li id="n-portal" class="mw-list-item"><a href="/wiki/Portal:Komunitas" title="Tentang proyek, apa yang dapat Anda lakukan, di mana untuk mencari sesuatu"><span>Portal komunitas</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Bantuan:Isi" title="Tempat mencari bantuan."><span>Bantuan</span></a></li> </ul> </div> </div> <div id="p-Wikipedia" class="vector-menu mw-portlet mw-portlet-Wikipedia" > <div class="vector-menu-heading"> Wikipedia </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-aboutsite" class="mw-list-item"><a href="/wiki/Wikipedia:Perihal"><span>Tentang Wikipedia</span></a></li><li id="n-Pancapilar" class="mw-list-item"><a href="/wiki/Wikipedia:Pancapilar"><span>Pancapilar</span></a></li><li id="n-Kebijakan" class="mw-list-item"><a href="/wiki/Wikipedia:Kebijakan_dan_pedoman"><span>Kebijakan</span></a></li><li id="n-Hubungi-kami" class="mw-list-item"><a href="/wiki/Wikipedia:Hubungi_kami"><span>Hubungi kami</span></a></li><li id="n-Bak-pasir" class="mw-list-item"><a href="/wiki/Wikipedia:Bak_pasir"><span>Bak pasir</span></a></li> </ul> </div> </div> <div id="p-Bagikan" class="vector-menu mw-portlet mw-portlet-Bagikan emptyPortlet" > <div class="vector-menu-heading"> Bagikan </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Halaman_Utama" class="mw-logo"> <img class="mw-logo-icon" src="/static/images/icons/wikipedia.png" alt="" aria-hidden="true" height="50" width="50"> <span class="mw-logo-container skin-invert"> <img class="mw-logo-wordmark" alt="Wikipedia" src="/static/images/mobile/copyright/wikipedia-wordmark-en.svg" style="width: 7.5em; height: 1.125em;"> <img class="mw-logo-tagline" alt="Ensiklopedia Bebas" src="/static/images/mobile/copyright/wikipedia-tagline-id.svg" width="120" height="14" style="width: 7.5em; height: 0.875em;"> </span> </a> </div> <div class="vector-header-end"> <div id="p-search" role="search" class="vector-search-box-vue vector-search-box-collapses vector-search-box-show-thumbnail vector-search-box-auto-expand-width vector-search-box"> <a href="/wiki/Istimewa:Pencarian" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Cari di Wikipedia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Pencarian</span> </a> <div class="vector-typeahead-search-container"> <div class="cdx-typeahead-search cdx-typeahead-search--show-thumbnail cdx-typeahead-search--auto-expand-width"> <form action="/w/index.php" id="searchform" class="cdx-search-input cdx-search-input--has-end-button"> <div id="simpleSearch" class="cdx-search-input__input-wrapper" data-search-loc="header-moved"> <div class="cdx-text-input cdx-text-input--has-start-icon"> <input class="cdx-text-input__input" type="search" name="search" placeholder="Telusuri Wikipedia" aria-label="Telusuri Wikipedia" autocapitalize="sentences" title="Cari di Wikipedia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Istimewa:Pencarian"> </div> <button class="cdx-button cdx-search-input__end-button">Cari</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Perkakas pribadi"> <div class="vector-user-links-main"> <div id="p-vector-user-menu-preferences" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-userpage" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <nav class="vector-appearance-landmark" aria-label="Tampilan"> <div id="vector-appearance-dropdown" class="vector-dropdown " title="Change the appearance of the page's font size, width, and color" > <input type="checkbox" id="vector-appearance-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-appearance-dropdown" class="vector-dropdown-checkbox " aria-label="Tampilan" > <label id="vector-appearance-dropdown-label" for="vector-appearance-dropdown-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" ><span class="vector-icon mw-ui-icon-appearance mw-ui-icon-wikimedia-appearance"></span> <span class="vector-dropdown-label-text">Tampilan</span> </label> <div class="vector-dropdown-content"> <div id="vector-appearance-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <div id="p-vector-user-menu-notifications" class="vector-menu mw-portlet emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> <div id="p-vector-user-menu-overflow" class="vector-menu mw-portlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_id.wikipedia.org&uselang=id" class=""><span>Menyumbang</span></a> </li> <li id="pt-createaccount-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Istimewa:Buat_akun&returnto=Tahun+cahaya" title="Anda dianjurkan untuk membuat akun dan masuk log; meskipun, hal itu tidak diwajibkan" class=""><span>Buat akun baru</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Istimewa:Masuk_log&returnto=Tahun+cahaya" title="Anda disarankan untuk masuk log, meskipun hal itu tidak diwajibkan. [o]" accesskey="o" class=""><span>Masuk log</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Opsi lainnya" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Perkakas pribadi" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-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" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Perkakas pribadi</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Menu pengguna" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_id.wikipedia.org&uselang=id"><span>Menyumbang</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Istimewa:Buat_akun&returnto=Tahun+cahaya" title="Anda dianjurkan untuk membuat akun dan masuk log; meskipun, hal itu tidak diwajibkan"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Buat akun baru</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Istimewa:Masuk_log&returnto=Tahun+cahaya" title="Anda disarankan untuk masuk log, meskipun hal itu tidak diwajibkan. [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Masuk log</span></a></li> </ul> </div> </div> <div id="p-user-menu-anon-editor" class="vector-menu mw-portlet mw-portlet-user-menu-anon-editor" > <div class="vector-menu-heading"> Halaman penyunting yang telah keluar log <a href="/wiki/Bantuan:Pengantar" aria-label="Pelajari lebih lanjut tentang menyunting"><span>pelajari lebih lanjut</span></a> </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-anoncontribs" class="mw-list-item"><a href="/wiki/Istimewa:Kontribusi_saya" title="Daftar suntingan yang dibuat dari alamat IP ini [y]" accesskey="y"><span>Kontribusi</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Istimewa:Pembicaraan_saya" title="Pembicaraan tentang suntingan dari alamat IP ini [n]" accesskey="n"><span>Pembicaraan</span></a></li> </ul> </div> </div> </div> </div> </nav> </div> </header> </div> <div class="mw-page-container"> <div class="mw-page-container-inner"> <div class="vector-sitenotice-container"> <div id="siteNotice"></div> </div> <div class="vector-column-start"> <div class="vector-main-menu-container"> <div id="mw-navigation"> <nav id="mw-panel" class="vector-main-menu-landmark" aria-label="Situs"> <div id="vector-main-menu-pinned-container" class="vector-pinned-container"> </div> </nav> </div> </div> <div class="vector-sticky-pinned-container"> <nav id="mw-panel-toc" aria-label="Daftar isi" data-event-name="ui.sidebar-toc" class="mw-table-of-contents-container vector-toc-landmark"> <div id="vector-toc-pinned-container" class="vector-pinned-container"> <div id="vector-toc" class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Daftar isi</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">pindah ke bilah sisi</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">sembunyikan</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Awal</div> </a> </li> <li id="toc-Definisi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Definisi"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Definisi</span> </div> </a> <ul id="toc-Definisi-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sejarah" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Sejarah"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Sejarah</span> </div> </a> <ul id="toc-Sejarah-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Penggunaan_istilah" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Penggunaan_istilah"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Penggunaan istilah</span> </div> </a> <ul id="toc-Penggunaan_istilah-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Satuan_terkait" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Satuan_terkait"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Satuan terkait</span> </div> </a> <ul id="toc-Satuan_terkait-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Lihat_pula" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Lihat_pula"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Lihat pula</span> </div> </a> <ul id="toc-Lihat_pula-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Catatan" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Catatan"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Catatan</span> </div> </a> <ul id="toc-Catatan-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Referensi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referensi"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Referensi</span> </div> </a> <ul id="toc-Referensi-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="Daftar isi" 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="Gulingkan daftar isi" > <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" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Gulingkan daftar isi</span> </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"><span class="mw-page-title-main">Tahun cahaya</span></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="Pergi ke artikel dalam bahasa lain. Terdapat 147 bahasa" > <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-147" 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">147 bahasa</span> </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/Ligjaar" title="Ligjaar – Afrikaans" lang="af" hreflang="af" data-title="Ligjaar" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-als mw-list-item"><a href="https://als.wikipedia.org/wiki/Lichtjahr" title="Lichtjahr – Jerman (Swiss)" lang="gsw" hreflang="gsw" data-title="Lichtjahr" data-language-autonym="Alemannisch" data-language-local-name="Jerman (Swiss)" class="interlanguage-link-target"><span>Alemannisch</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%8B%A8%E1%89%A5%E1%88%AD%E1%88%83%E1%8A%95_%E1%8B%93%E1%88%98%E1%89%B5" title="የብርሃን ዓመት – Amharik" lang="am" hreflang="am" data-title="የብርሃን ዓመት" data-language-autonym="አማርኛ" data-language-local-name="Amharik" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-an mw-list-item"><a href="https://an.wikipedia.org/wiki/Anyo_luz" title="Anyo luz – Aragon" lang="an" hreflang="an" data-title="Anyo luz" data-language-autonym="Aragonés" data-language-local-name="Aragon" class="interlanguage-link-target"><span>Aragonés</span></a></li><li class="interlanguage-link interwiki-ang mw-list-item"><a href="https://ang.wikipedia.org/wiki/L%C4%93ohtg%C4%93ar" title="Lēohtgēar – Inggris Kuno" lang="ang" hreflang="ang" data-title="Lēohtgēar" data-language-autonym="Ænglisc" data-language-local-name="Inggris Kuno" class="interlanguage-link-target"><span>Ænglisc</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B3%D9%86%D8%A9_%D8%B6%D9%88%D8%A6%D9%8A%D8%A9" title="سنة ضوئية – Arab" lang="ar" hreflang="ar" data-title="سنة ضوئية" data-language-autonym="العربية" data-language-local-name="Arab" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-ary mw-list-item"><a href="https://ary.wikipedia.org/wiki/%D8%B3%D9%86%D8%A9_%D8%B6%D9%88%D8%A6%D9%8A%D8%A9" title="سنة ضوئية – Arab Maroko" lang="ary" hreflang="ary" data-title="سنة ضوئية" data-language-autonym="الدارجة" data-language-local-name="Arab Maroko" class="interlanguage-link-target"><span>الدارجة</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%B3%D9%86%D8%A9_%D9%86%D9%88%D8%B1" title="سنة نور – Arab Mesir" lang="arz" hreflang="arz" data-title="سنة نور" data-language-autonym="مصرى" data-language-local-name="Arab Mesir" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-as mw-list-item"><a href="https://as.wikipedia.org/wiki/%E0%A6%86%E0%A6%B2%E0%A7%8B%E0%A6%95-%E0%A6%AC%E0%A7%B0%E0%A7%8D%E0%A6%B7" title="আলোক-বৰ্ষ – Assam" lang="as" hreflang="as" data-title="আলোক-বৰ্ষ" data-language-autonym="অসমীয়া" data-language-local-name="Assam" class="interlanguage-link-target"><span>অসমীয়া</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/A%C3%B1u_lluz" title="Añu lluz – Asturia" lang="ast" hreflang="ast" data-title="Añu lluz" data-language-autonym="Asturianu" data-language-local-name="Asturia" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/%C4%B0%C5%9F%C4%B1q_ili" title="İşıq ili – Azerbaijani" lang="az" hreflang="az" data-title="İşıq ili" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-azb mw-list-item"><a href="https://azb.wikipedia.org/wiki/%D8%A7%DB%8C%D8%B4%DB%8C%D9%82_%D8%A7%DB%8C%D9%84%DB%8C" title="ایشیق ایلی – South Azerbaijani" lang="azb" hreflang="azb" data-title="ایشیق ایلی" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%A1%D0%B2%D0%B5%D1%82%D0%BB%D0%B0%D0%B2%D1%8B_%D0%B3%D0%BE%D0%B4" title="Светлавы год – Belarusia" lang="be" hreflang="be" data-title="Светлавы год" data-language-autonym="Беларуская" data-language-local-name="Belarusia" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-be-x-old mw-list-item"><a href="https://be-tarask.wikipedia.org/wiki/%D0%A1%D1%8C%D0%B2%D0%B5%D1%82%D0%BB%D0%B0%D0%B2%D1%8B_%D0%B3%D0%BE%D0%B4" title="Сьветлавы год – Belarusian (Taraškievica orthography)" lang="be-tarask" hreflang="be-tarask" data-title="Сьветлавы год" data-language-autonym="Беларуская (тарашкевіца)" data-language-local-name="Belarusian (Taraškievica orthography)" class="interlanguage-link-target"><span>Беларуская (тарашкевіца)</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%A1%D0%B2%D0%B5%D1%82%D0%BB%D0%B8%D0%BD%D0%BD%D0%B0_%D0%B3%D0%BE%D0%B4%D0%B8%D0%BD%D0%B0" title="Светлинна година – Bulgaria" lang="bg" hreflang="bg" data-title="Светлинна година" data-language-autonym="Български" data-language-local-name="Bulgaria" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-bh mw-list-item"><a href="https://bh.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%95%E0%A4%BE%E0%A4%B6-%E0%A4%AC%E0%A4%B0%E0%A4%BF%E0%A4%B8" title="प्रकाश-बरिस – Bhojpuri" lang="bh" hreflang="bh" data-title="प्रकाश-बरिस" data-language-autonym="भोजपुरी" data-language-local-name="Bhojpuri" class="interlanguage-link-target"><span>भोजपुरी</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%86%E0%A6%B2%E0%A7%8B%E0%A6%95_%E0%A6%AC%E0%A6%B0%E0%A7%8D%E0%A6%B7" title="আলোক বর্ষ – Bengali" lang="bn" hreflang="bn" data-title="আলোক বর্ষ" data-language-autonym="বাংলা" data-language-local-name="Bengali" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-br mw-list-item"><a href="https://br.wikipedia.org/wiki/Bloavezh-goulo%C3%B9" title="Bloavezh-gouloù – Breton" lang="br" hreflang="br" data-title="Bloavezh-gouloù" data-language-autonym="Brezhoneg" data-language-local-name="Breton" class="interlanguage-link-target"><span>Brezhoneg</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Svjetlosna_godina" title="Svjetlosna godina – Bosnia" lang="bs" hreflang="bs" data-title="Svjetlosna godina" data-language-autonym="Bosanski" data-language-local-name="Bosnia" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Any_llum" title="Any llum – Katalan" lang="ca" hreflang="ca" data-title="Any llum" data-language-autonym="Català" data-language-local-name="Katalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%B3%D8%A7%DA%B5%DB%8C_%DA%95%D9%88%D9%88%D9%86%D8%A7%DA%A9%DB%8C" title="ساڵی ڕووناکی – Kurdi Sorani" lang="ckb" hreflang="ckb" data-title="ساڵی ڕووناکی" data-language-autonym="کوردی" data-language-local-name="Kurdi Sorani" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Sv%C4%9Bteln%C3%BD_rok" title="Světelný rok – Cheska" lang="cs" hreflang="cs" data-title="Světelný rok" data-language-autonym="Čeština" data-language-local-name="Cheska" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cy mw-list-item"><a href="https://cy.wikipedia.org/wiki/Blwyddyn_golau" title="Blwyddyn golau – Welsh" lang="cy" hreflang="cy" data-title="Blwyddyn golau" data-language-autonym="Cymraeg" data-language-local-name="Welsh" class="interlanguage-link-target"><span>Cymraeg</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Lys%C3%A5r" title="Lysår – Dansk" lang="da" hreflang="da" data-title="Lysår" data-language-autonym="Dansk" data-language-local-name="Dansk" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Lichtjahr" title="Lichtjahr – Jerman" lang="de" hreflang="de" data-title="Lichtjahr" data-language-autonym="Deutsch" data-language-local-name="Jerman" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-diq mw-list-item"><a href="https://diq.wikipedia.org/wiki/Serra_ro%C5%9Fti" title="Serra roşti – Zazaki" lang="diq" hreflang="diq" data-title="Serra roşti" data-language-autonym="Zazaki" data-language-local-name="Zazaki" class="interlanguage-link-target"><span>Zazaki</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%88%CF%84%CE%BF%CF%82_%CF%86%CF%89%CF%84%CF%8C%CF%82" title="Έτος φωτός – Yunani" lang="el" hreflang="el" data-title="Έτος φωτός" data-language-autonym="Ελληνικά" data-language-local-name="Yunani" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-eml mw-list-item"><a href="https://eml.wikipedia.org/wiki/An_lu%C5%9B" title="An luś – Emiliano-Romagnolo" lang="egl" hreflang="egl" data-title="An luś" data-language-autonym="Emiliàn e rumagnòl" data-language-local-name="Emiliano-Romagnolo" class="interlanguage-link-target"><span>Emiliàn e rumagnòl</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Light-year" title="Light-year – Inggris" lang="en" hreflang="en" data-title="Light-year" data-language-autonym="English" data-language-local-name="Inggris" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Lumjaro" title="Lumjaro – Esperanto" lang="eo" hreflang="eo" data-title="Lumjaro" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/A%C3%B1o_luz" title="Año luz – Spanyol" lang="es" hreflang="es" data-title="Año luz" data-language-autonym="Español" data-language-local-name="Spanyol" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Valgusaasta" title="Valgusaasta – Esti" lang="et" hreflang="et" data-title="Valgusaasta" data-language-autonym="Eesti" data-language-local-name="Esti" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Argi-urte" title="Argi-urte – Basque" lang="eu" hreflang="eu" data-title="Argi-urte" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-ext mw-list-item"><a href="https://ext.wikipedia.org/wiki/A%C3%B1u_lus" title="Añu lus – Extremaduran" lang="ext" hreflang="ext" data-title="Añu lus" data-language-autonym="Estremeñu" data-language-local-name="Extremaduran" class="interlanguage-link-target"><span>Estremeñu</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%B3%D8%A7%D9%84_%D9%86%D9%88%D8%B1%DB%8C" title="سال نوری – Persia" lang="fa" hreflang="fa" data-title="سال نوری" data-language-autonym="فارسی" data-language-local-name="Persia" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/Valovuosi" title="Valovuosi – Suomi" lang="fi" hreflang="fi" data-title="Valovuosi" data-language-autonym="Suomi" data-language-local-name="Suomi" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Ann%C3%A9e-lumi%C3%A8re" title="Année-lumière – Prancis" lang="fr" hreflang="fr" data-title="Année-lumière" data-language-autonym="Français" data-language-local-name="Prancis" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-frr mw-list-item"><a href="https://frr.wikipedia.org/wiki/Laachtjuar" title="Laachtjuar – Frisia Utara" lang="frr" hreflang="frr" data-title="Laachtjuar" data-language-autonym="Nordfriisk" data-language-local-name="Frisia Utara" class="interlanguage-link-target"><span>Nordfriisk</span></a></li><li class="interlanguage-link interwiki-fur mw-list-item"><a href="https://fur.wikipedia.org/wiki/An_l%C3%BBs" title="An lûs – Friuli" lang="fur" hreflang="fur" data-title="An lûs" data-language-autonym="Furlan" data-language-local-name="Friuli" class="interlanguage-link-target"><span>Furlan</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Ljochtjier" title="Ljochtjier – Frisia Barat" lang="fy" hreflang="fy" data-title="Ljochtjier" data-language-autonym="Frysk" data-language-local-name="Frisia Barat" class="interlanguage-link-target"><span>Frysk</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Solasbhliain" title="Solasbhliain – Irlandia" lang="ga" hreflang="ga" data-title="Solasbhliain" data-language-autonym="Gaeilge" data-language-local-name="Irlandia" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gan mw-list-item"><a href="https://gan.wikipedia.org/wiki/%E5%85%89%E5%B9%B4" title="光年 – Gan" lang="gan" hreflang="gan" data-title="光年" data-language-autonym="贛語" data-language-local-name="Gan" class="interlanguage-link-target"><span>贛語</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Ano_luz" title="Ano luz – Galisia" lang="gl" hreflang="gl" data-title="Ano luz" data-language-autonym="Galego" data-language-local-name="Galisia" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gu mw-list-item"><a href="https://gu.wikipedia.org/wiki/%E0%AA%AA%E0%AB%8D%E0%AA%B0%E0%AA%95%E0%AA%BE%E0%AA%B6%E0%AA%B5%E0%AA%B0%E0%AB%8D%E0%AA%B7" title="પ્રકાશવર્ષ – Gujarat" lang="gu" hreflang="gu" data-title="પ્રકાશવર્ષ" data-language-autonym="ગુજરાતી" data-language-local-name="Gujarat" class="interlanguage-link-target"><span>ગુજરાતી</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A9%D7%A0%D7%AA_%D7%90%D7%95%D7%A8" title="שנת אור – Ibrani" lang="he" hreflang="he" data-title="שנת אור" data-language-autonym="עברית" data-language-local-name="Ibrani" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%95%E0%A4%BE%E0%A4%B6-%E0%A4%B5%E0%A4%B0%E0%A5%8D%E0%A4%B7" title="प्रकाश-वर्ष – Hindi" lang="hi" hreflang="hi" data-title="प्रकाश-वर्ष" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hif mw-list-item"><a href="https://hif.wikipedia.org/wiki/Prakash_saal" title="Prakash saal – Hindi Fiji" lang="hif" hreflang="hif" data-title="Prakash saal" data-language-autonym="Fiji Hindi" data-language-local-name="Hindi Fiji" class="interlanguage-link-target"><span>Fiji Hindi</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Svjetlosna_godina" title="Svjetlosna godina – Kroasia" lang="hr" hreflang="hr" data-title="Svjetlosna godina" data-language-autonym="Hrvatski" data-language-local-name="Kroasia" class="interlanguage-link-target"><span>Hrvatski</span></a></li><li class="interlanguage-link interwiki-ht mw-list-item"><a href="https://ht.wikipedia.org/wiki/Ane-limy%C3%A8" title="Ane-limyè – Kreol Haiti" lang="ht" hreflang="ht" data-title="Ane-limyè" data-language-autonym="Kreyòl ayisyen" data-language-local-name="Kreol Haiti" class="interlanguage-link-target"><span>Kreyòl ayisyen</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/F%C3%A9ny%C3%A9v" title="Fényév – Hungaria" lang="hu" hreflang="hu" data-title="Fényév" data-language-autonym="Magyar" data-language-local-name="Hungaria" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%BC%D5%B8%D6%82%D5%BD%D5%A1%D5%B5%D5%AB%D5%B6_%D5%BF%D5%A1%D6%80%D5%AB" title="Լուսային տարի – Armenia" lang="hy" hreflang="hy" data-title="Լուսային տարի" data-language-autonym="Հայերեն" data-language-local-name="Armenia" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-ia mw-list-item"><a href="https://ia.wikipedia.org/wiki/Anno_luminal" title="Anno luminal – Interlingua" lang="ia" hreflang="ia" data-title="Anno luminal" data-language-autonym="Interlingua" data-language-local-name="Interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Lumyaro" title="Lumyaro – Ido" lang="io" hreflang="io" data-title="Lumyaro" data-language-autonym="Ido" data-language-local-name="Ido" class="interlanguage-link-target"><span>Ido</span></a></li><li class="interlanguage-link interwiki-is mw-list-item"><a href="https://is.wikipedia.org/wiki/Lj%C3%B3s%C3%A1r" title="Ljósár – Islandia" lang="is" hreflang="is" data-title="Ljósár" data-language-autonym="Íslenska" data-language-local-name="Islandia" class="interlanguage-link-target"><span>Íslenska</span></a></li><li class="interlanguage-link interwiki-it mw-list-item"><a href="https://it.wikipedia.org/wiki/Anno_luce" title="Anno luce – Italia" lang="it" hreflang="it" data-title="Anno luce" data-language-autonym="Italiano" data-language-local-name="Italia" 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/%E5%85%89%E5%B9%B4" title="光年 – Jepang" lang="ja" hreflang="ja" data-title="光年" data-language-autonym="日本語" data-language-local-name="Jepang" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-jv mw-list-item"><a href="https://jv.wikipedia.org/wiki/Taun_cahya" title="Taun cahya – Jawa" lang="jv" hreflang="jv" data-title="Taun cahya" data-language-autonym="Jawa" data-language-local-name="Jawa" class="interlanguage-link-target"><span>Jawa</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%A1%E1%83%98%E1%83%9C%E1%83%90%E1%83%97%E1%83%9A%E1%83%98%E1%83%A1_%E1%83%AC%E1%83%94%E1%83%9A%E1%83%98%E1%83%AC%E1%83%90%E1%83%93%E1%83%98" title="სინათლის წელიწადი – Georgia" lang="ka" hreflang="ka" data-title="სინათლის წელიწადი" data-language-autonym="ქართული" data-language-local-name="Georgia" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-kab mw-list-item"><a href="https://kab.wikipedia.org/wiki/Afawatay" title="Afawatay – Kabyle" lang="kab" hreflang="kab" data-title="Afawatay" data-language-autonym="Taqbaylit" data-language-local-name="Kabyle" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-kbp mw-list-item"><a href="https://kbp.wikipedia.org/wiki/M%CA%8And%CA%8As%CA%8A%CA%8A_p%C9%A9na%C9%A3" title="Mʊndʊsʊʊ pɩnaɣ – Kabiye" lang="kbp" hreflang="kbp" data-title="Mʊndʊsʊʊ pɩnaɣ" data-language-autonym="Kabɩyɛ" data-language-local-name="Kabiye" class="interlanguage-link-target"><span>Kabɩyɛ</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%96%D0%B0%D1%80%D1%8B%D2%9B_%D0%B6%D1%8B%D0%BB%D1%8B" title="Жарық жылы – Kazakh" lang="kk" hreflang="kk" data-title="Жарық жылы" data-language-autonym="Қазақша" data-language-local-name="Kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-km mw-list-item"><a href="https://km.wikipedia.org/wiki/%E1%9E%86%E1%9F%92%E1%9E%93%E1%9E%B6%E1%9F%86%E1%9E%96%E1%9E%93%E1%9F%92%E1%9E%9B%E1%9E%BA" title="ឆ្នាំពន្លឺ – Khmer" lang="km" hreflang="km" data-title="ឆ្នាំពន្លឺ" data-language-autonym="ភាសាខ្មែរ" data-language-local-name="Khmer" class="interlanguage-link-target"><span>ភាសាខ្មែរ</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%9C%E0%B3%8D%E0%B2%AF%E0%B3%8B%E0%B2%A4%E0%B2%BF%E0%B2%B0%E0%B3%8D%E0%B2%B5%E0%B2%B0%E0%B3%8D%E0%B2%B7" title="ಜ್ಯೋತಿರ್ವರ್ಷ – Kannada" lang="kn" hreflang="kn" data-title="ಜ್ಯೋತಿರ್ವರ್ಷ" data-language-autonym="ಕನ್ನಡ" data-language-local-name="Kannada" class="interlanguage-link-target"><span>ಕನ್ನಡ</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EA%B4%91%EB%85%84" title="광년 – Korea" lang="ko" hreflang="ko" data-title="광년" data-language-autonym="한국어" data-language-local-name="Korea" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Sala_t%C3%AEr%C3%AAj%C3%AA" title="Sala tîrêjê – Kurdi" lang="ku" hreflang="ku" data-title="Sala tîrêjê" data-language-autonym="Kurdî" data-language-local-name="Kurdi" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-kw mw-list-item"><a href="https://kw.wikipedia.org/wiki/Bledhen_wolow" title="Bledhen wolow – Kornish" lang="kw" hreflang="kw" data-title="Bledhen wolow" data-language-autonym="Kernowek" data-language-local-name="Kornish" class="interlanguage-link-target"><span>Kernowek</span></a></li><li class="interlanguage-link interwiki-ky mw-list-item"><a href="https://ky.wikipedia.org/wiki/%D0%96%D0%B0%D1%80%D1%8B%D0%BA_%D0%B6%D1%8B%D0%BB%D1%8B" title="Жарык жылы – Kirgiz" lang="ky" hreflang="ky" data-title="Жарык жылы" data-language-autonym="Кыргызча" data-language-local-name="Kirgiz" class="interlanguage-link-target"><span>Кыргызча</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Annus_luce_mensus" title="Annus luce mensus – Latin" lang="la" hreflang="la" data-title="Annus luce mensus" data-language-autonym="Latina" data-language-local-name="Latin" class="interlanguage-link-target"><span>Latina</span></a></li><li class="interlanguage-link interwiki-lb mw-list-item"><a href="https://lb.wikipedia.org/wiki/Liichtjoer" title="Liichtjoer – Luksemburg" lang="lb" hreflang="lb" data-title="Liichtjoer" data-language-autonym="Lëtzebuergesch" data-language-local-name="Luksemburg" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lfn mw-list-item"><a href="https://lfn.wikipedia.org/wiki/Anio_de_lus" title="Anio de lus – Lingua Franca Nova" lang="lfn" hreflang="lfn" data-title="Anio de lus" data-language-autonym="Lingua Franca Nova" data-language-local-name="Lingua Franca Nova" class="interlanguage-link-target"><span>Lingua Franca Nova</span></a></li><li class="interlanguage-link interwiki-li mw-list-item"><a href="https://li.wikipedia.org/wiki/Leechjaor" title="Leechjaor – Limburgia" lang="li" hreflang="li" data-title="Leechjaor" data-language-autonym="Limburgs" data-language-local-name="Limburgia" class="interlanguage-link-target"><span>Limburgs</span></a></li><li class="interlanguage-link interwiki-lij mw-list-item"><a href="https://lij.wikipedia.org/wiki/Ann%C3%B4_l%C3%BCxe" title="Annô lüxe – Liguria" lang="lij" hreflang="lij" data-title="Annô lüxe" data-language-autonym="Ligure" data-language-local-name="Liguria" class="interlanguage-link-target"><span>Ligure</span></a></li><li class="interlanguage-link interwiki-lld mw-list-item"><a href="https://lld.wikipedia.org/wiki/Ann_lum" title="Ann lum – Ladin" lang="lld" hreflang="lld" data-title="Ann lum" data-language-autonym="Ladin" data-language-local-name="Ladin" class="interlanguage-link-target"><span>Ladin</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/An_l%C3%BCce" title="An lüce – Lombard" lang="lmo" hreflang="lmo" data-title="An lüce" data-language-autonym="Lombard" data-language-local-name="Lombard" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-lo mw-list-item"><a href="https://lo.wikipedia.org/wiki/%E0%BA%9B%E0%BA%B5%E0%BB%81%E0%BA%AA%E0%BA%87" title="ປີແສງ – Lao" lang="lo" hreflang="lo" data-title="ປີແສງ" data-language-autonym="ລາວ" data-language-local-name="Lao" class="interlanguage-link-target"><span>ລາວ</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/%C5%A0viesmetis" title="Šviesmetis – Lituavi" lang="lt" hreflang="lt" data-title="Šviesmetis" data-language-autonym="Lietuvių" data-language-local-name="Lituavi" class="interlanguage-link-target"><span>Lietuvių</span></a></li><li class="interlanguage-link interwiki-lv mw-list-item"><a href="https://lv.wikipedia.org/wiki/Gaismas_gads" title="Gaismas gads – Latvi" lang="lv" hreflang="lv" data-title="Gaismas gads" data-language-autonym="Latviešu" data-language-local-name="Latvi" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mg mw-list-item"><a href="https://mg.wikipedia.org/wiki/Taon-kazavana" title="Taon-kazavana – Malagasi" lang="mg" hreflang="mg" data-title="Taon-kazavana" data-language-autonym="Malagasy" data-language-local-name="Malagasi" class="interlanguage-link-target"><span>Malagasy</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%A1%D0%B2%D0%B5%D1%82%D0%BB%D0%BE%D1%81%D0%BD%D0%B0_%D0%B3%D0%BE%D0%B4%D0%B8%D0%BD%D0%B0" title="Светлосна година – Makedonia" lang="mk" hreflang="mk" data-title="Светлосна година" data-language-autonym="Македонски" data-language-local-name="Makedonia" class="interlanguage-link-target"><span>Македонски</span></a></li><li class="interlanguage-link interwiki-ml mw-list-item"><a href="https://ml.wikipedia.org/wiki/%E0%B4%AA%E0%B5%8D%E0%B4%B0%E0%B4%95%E0%B4%BE%E0%B4%B6%E0%B4%B5%E0%B5%BC%E0%B4%B7%E0%B4%82" title="പ്രകാശവർഷം – Malayalam" lang="ml" hreflang="ml" data-title="പ്രകാശവർഷം" data-language-autonym="മലയാളം" data-language-local-name="Malayalam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mn mw-list-item"><a href="https://mn.wikipedia.org/wiki/%D0%93%D1%8D%D1%80%D0%BB%D0%B8%D0%B9%D0%BD_%D0%B6%D0%B8%D0%BB" title="Гэрлийн жил – Mongolia" lang="mn" hreflang="mn" data-title="Гэрлийн жил" data-language-autonym="Монгол" data-language-local-name="Mongolia" class="interlanguage-link-target"><span>Монгол</span></a></li><li class="interlanguage-link interwiki-mnw mw-list-item"><a href="https://mnw.wikipedia.org/wiki/%E1%80%9C%E1%80%BB%E1%80%B8-%E1%80%9E%E1%81%9E%E1%80%AC%E1%80%B6" title="လျး-သၞာံ – Mon" lang="mnw" hreflang="mnw" data-title="လျး-သၞာံ" data-language-autonym="ဘာသာမန်" data-language-local-name="Mon" class="interlanguage-link-target"><span>ဘာသာမန်</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%95%E0%A4%BE%E0%A4%B6-%E0%A4%B5%E0%A4%B0%E0%A5%8D%E0%A4%B7" title="प्रकाश-वर्ष – Marathi" lang="mr" hreflang="mr" data-title="प्रकाश-वर्ष" data-language-autonym="मराठी" data-language-local-name="Marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Tahun_cahaya" title="Tahun cahaya – Melayu" lang="ms" hreflang="ms" data-title="Tahun cahaya" data-language-autonym="Bahasa Melayu" data-language-local-name="Melayu" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-mt mw-list-item"><a href="https://mt.wikipedia.org/wiki/Sena_dawl" title="Sena dawl – Malta" lang="mt" hreflang="mt" data-title="Sena dawl" data-language-autonym="Malti" data-language-local-name="Malta" class="interlanguage-link-target"><span>Malti</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%A1%E1%80%9C%E1%80%84%E1%80%BA%E1%80%B8%E1%80%94%E1%80%BE%E1%80%85%E1%80%BA" title="အလင်းနှစ် – Burma" lang="my" hreflang="my" data-title="အလင်းနှစ်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="Burma" class="interlanguage-link-target"><span>မြန်မာဘာသာ</span></a></li><li class="interlanguage-link interwiki-nah mw-list-item"><a href="https://nah.wikipedia.org/wiki/Tl%C4%81hu%C4%ABlxihuitl" title="Tlāhuīlxihuitl – Nahuatl" lang="nah" hreflang="nah" data-title="Tlāhuīlxihuitl" data-language-autonym="Nāhuatl" data-language-local-name="Nahuatl" class="interlanguage-link-target"><span>Nāhuatl</span></a></li><li class="interlanguage-link interwiki-nds mw-list-item"><a href="https://nds.wikipedia.org/wiki/Lichtjohr" title="Lichtjohr – Jerman Rendah" lang="nds" hreflang="nds" data-title="Lichtjohr" data-language-autonym="Plattdüütsch" data-language-local-name="Jerman Rendah" class="interlanguage-link-target"><span>Plattdüütsch</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%95%E0%A4%BE%E0%A4%B6_%E0%A4%B5%E0%A4%B0%E0%A5%8D%E0%A4%B7" title="प्रकाश वर्ष – Nepali" lang="ne" hreflang="ne" data-title="प्रकाश वर्ष" data-language-autonym="नेपाली" data-language-local-name="Nepali" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Lichtjaar" title="Lichtjaar – Belanda" lang="nl" hreflang="nl" data-title="Lichtjaar" data-language-autonym="Nederlands" data-language-local-name="Belanda" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-nn mw-list-item"><a href="https://nn.wikipedia.org/wiki/Lys%C3%A5r" title="Lysår – Nynorsk Norwegia" lang="nn" hreflang="nn" data-title="Lysår" data-language-autonym="Norsk nynorsk" data-language-local-name="Nynorsk Norwegia" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Lys%C3%A5r" title="Lysår – Bokmål Norwegia" lang="nb" hreflang="nb" data-title="Lysår" data-language-autonym="Norsk bokmål" data-language-local-name="Bokmål Norwegia" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-nqo mw-list-item"><a href="https://nqo.wikipedia.org/wiki/%DF%A6%DF%8B%DF%9F%DF%8B%DF%B2-%DF%9B%DF%8A%DF%B2%DF%AD" title="ߦߋߟߋ߲-ߛߊ߲߭ – N’Ko" lang="nqo" hreflang="nqo" data-title="ߦߋߟߋ߲-ߛߊ߲߭" data-language-autonym="ߒߞߏ" data-language-local-name="N’Ko" class="interlanguage-link-target"><span>ߒߞߏ</span></a></li><li class="interlanguage-link interwiki-ny mw-list-item"><a href="https://ny.wikipedia.org/wiki/Chaka_Chowala" title="Chaka Chowala – Nyanja" lang="ny" hreflang="ny" data-title="Chaka Chowala" data-language-autonym="Chi-Chewa" data-language-local-name="Nyanja" class="interlanguage-link-target"><span>Chi-Chewa</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/Annada_lutz" title="Annada lutz – Ositania" lang="oc" hreflang="oc" data-title="Annada lutz" data-language-autonym="Occitan" data-language-local-name="Ositania" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Wagga_Iffa" title="Wagga Iffa – Oromo" lang="om" hreflang="om" data-title="Wagga Iffa" data-language-autonym="Oromoo" data-language-local-name="Oromo" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-or mw-list-item"><a href="https://or.wikipedia.org/wiki/%E0%AC%86%E0%AC%B2%E0%AD%8B%E0%AC%95%E0%AC%AC%E0%AC%B0%E0%AD%8D%E0%AC%B7" title="ଆଲୋକବର୍ଷ – Oriya" lang="or" hreflang="or" data-title="ଆଲୋକବର୍ଷ" data-language-autonym="ଓଡ଼ିଆ" data-language-local-name="Oriya" class="interlanguage-link-target"><span>ଓଡ଼ିଆ</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%AA%E0%A9%8D%E0%A8%B0%E0%A8%95%E0%A8%BE%E0%A8%B8%E0%A8%BC-%E0%A8%B8%E0%A8%BE%E0%A8%B2" title="ਪ੍ਰਕਾਸ਼-ਸਾਲ – Punjabi" lang="pa" hreflang="pa" data-title="ਪ੍ਰਕਾਸ਼-ਸਾਲ" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="Punjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pap mw-list-item"><a href="https://pap.wikipedia.org/wiki/A%C3%B1a_lus" title="Aña lus – Papiamento" lang="pap" hreflang="pap" data-title="Aña lus" data-language-autonym="Papiamentu" data-language-local-name="Papiamento" class="interlanguage-link-target"><span>Papiamentu</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Rok_%C5%9Bwietlny" title="Rok świetlny – Polski" lang="pl" hreflang="pl" data-title="Rok świetlny" data-language-autonym="Polski" data-language-local-name="Polski" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pms mw-list-item"><a href="https://pms.wikipedia.org/wiki/Ann_lus" title="Ann lus – Piedmontese" lang="pms" hreflang="pms" data-title="Ann lus" data-language-autonym="Piemontèis" data-language-local-name="Piedmontese" class="interlanguage-link-target"><span>Piemontèis</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%DA%86%D8%A7%D9%86%DD%A8_%D9%88%D8%B1%DA%BE%D8%A7" title="چانݨ ورھا – Western Punjabi" lang="pnb" hreflang="pnb" data-title="چانݨ ورھا" data-language-autonym="پنجابی" data-language-local-name="Western Punjabi" class="interlanguage-link-target"><span>پنجابی</span></a></li><li class="interlanguage-link interwiki-ps mw-list-item"><a href="https://ps.wikipedia.org/wiki/%D9%84%D9%85%D8%B1%DB%8C%D8%B2_%DA%A9%D8%A7%D9%84" title="لمریز کال – Pashto" lang="ps" hreflang="ps" data-title="لمریز کال" data-language-autonym="پښتو" data-language-local-name="Pashto" class="interlanguage-link-target"><span>پښتو</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Ano-luz" title="Ano-luz – Portugis" lang="pt" hreflang="pt" data-title="Ano-luz" data-language-autonym="Português" data-language-local-name="Portugis" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-qu mw-list-item"><a href="https://qu.wikipedia.org/wiki/Achkiy_wata" title="Achkiy wata – Quechua" lang="qu" hreflang="qu" data-title="Achkiy wata" data-language-autonym="Runa Simi" data-language-local-name="Quechua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/An-lumin%C4%83" title="An-lumină – Rumania" lang="ro" hreflang="ro" data-title="An-lumină" data-language-autonym="Română" data-language-local-name="Rumania" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A1%D0%B2%D0%B5%D1%82%D0%BE%D0%B2%D0%BE%D0%B9_%D0%B3%D0%BE%D0%B4" title="Световой год – Rusia" lang="ru" hreflang="ru" data-title="Световой год" data-language-autonym="Русский" data-language-local-name="Rusia" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-rue mw-list-item"><a href="https://rue.wikipedia.org/wiki/%D0%A1%D0%B2%D1%96%D1%82%D0%BB%D0%BE%D0%B2%D1%8B%D0%B9_%D1%80%D1%96%D0%BA" title="Світловый рік – Rusyn" lang="rue" hreflang="rue" data-title="Світловый рік" data-language-autonym="Русиньскый" data-language-local-name="Rusyn" class="interlanguage-link-target"><span>Русиньскый</span></a></li><li class="interlanguage-link interwiki-sa mw-list-item"><a href="https://sa.wikipedia.org/wiki/%E0%A4%AA%E0%A5%8D%E0%A4%B0%E0%A4%95%E0%A4%BE%E0%A4%B6%E0%A4%B5%E0%A4%B0%E0%A5%8D%E0%A4%B7%E0%A4%83" title="प्रकाशवर्षः – Sanskerta" lang="sa" hreflang="sa" data-title="प्रकाशवर्षः" data-language-autonym="संस्कृतम्" data-language-local-name="Sanskerta" class="interlanguage-link-target"><span>संस्कृतम्</span></a></li><li class="interlanguage-link interwiki-sah mw-list-item"><a href="https://sah.wikipedia.org/wiki/%D0%A1%D1%8B%D1%80%D0%B4%D1%8B%D0%BA_%D1%81%D1%8B%D0%BB%D0%B0" title="Сырдык сыла – Sakha" lang="sah" hreflang="sah" data-title="Сырдык сыла" data-language-autonym="Саха тыла" data-language-local-name="Sakha" class="interlanguage-link-target"><span>Саха тыла</span></a></li><li class="interlanguage-link interwiki-sc mw-list-item"><a href="https://sc.wikipedia.org/wiki/Annu_luxi" title="Annu luxi – Sardinia" lang="sc" hreflang="sc" data-title="Annu luxi" data-language-autonym="Sardu" data-language-local-name="Sardinia" class="interlanguage-link-target"><span>Sardu</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Annu_luci" title="Annu luci – Sisilia" lang="scn" hreflang="scn" data-title="Annu luci" data-language-autonym="Sicilianu" data-language-local-name="Sisilia" class="interlanguage-link-target"><span>Sicilianu</span></a></li><li class="interlanguage-link interwiki-sco mw-list-item"><a href="https://sco.wikipedia.org/wiki/Licht-year" title="Licht-year – Skotlandia" lang="sco" hreflang="sco" data-title="Licht-year" data-language-autonym="Scots" data-language-local-name="Skotlandia" class="interlanguage-link-target"><span>Scots</span></a></li><li class="interlanguage-link interwiki-sd mw-list-item"><a href="https://sd.wikipedia.org/wiki/%D9%86%D9%88%D8%B1%D9%8A_%D8%B3%D8%A7%D9%84" title="نوري سال – Sindhi" lang="sd" hreflang="sd" data-title="نوري سال" data-language-autonym="سنڌي" data-language-local-name="Sindhi" class="interlanguage-link-target"><span>سنڌي</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Svjetlosna_godina" title="Svjetlosna godina – Serbo-Kroasia" lang="sh" hreflang="sh" data-title="Svjetlosna godina" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Kroasia" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Light_year" title="Light year – Simple English" lang="en-simple" hreflang="en-simple" data-title="Light year" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-sk mw-list-item"><a href="https://sk.wikipedia.org/wiki/Sveteln%C3%BD_rok" title="Svetelný rok – Slovak" lang="sk" hreflang="sk" data-title="Svetelný rok" data-language-autonym="Slovenčina" data-language-local-name="Slovak" class="interlanguage-link-target"><span>Slovenčina</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Svetlobno_leto" title="Svetlobno leto – Sloven" lang="sl" hreflang="sl" data-title="Svetlobno leto" data-language-autonym="Slovenščina" data-language-local-name="Sloven" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-so mw-list-item"><a href="https://so.wikipedia.org/wiki/Sano_Ilays" title="Sano Ilays – Somalia" lang="so" hreflang="so" data-title="Sano Ilays" data-language-autonym="Soomaaliga" data-language-local-name="Somalia" class="interlanguage-link-target"><span>Soomaaliga</span></a></li><li class="interlanguage-link interwiki-sq mw-list-item"><a href="https://sq.wikipedia.org/wiki/Drit%C3%ABviti" title="Dritëviti – Albania" lang="sq" hreflang="sq" data-title="Dritëviti" data-language-autonym="Shqip" data-language-local-name="Albania" class="interlanguage-link-target"><span>Shqip</span></a></li><li class="interlanguage-link interwiki-sr mw-list-item"><a href="https://sr.wikipedia.org/wiki/%D0%A1%D0%B2%D0%B5%D1%82%D0%BB%D0%BE%D1%81%D0%BD%D0%B0_%D0%B3%D0%BE%D0%B4%D0%B8%D0%BD%D0%B0" title="Светлосна година – Serbia" lang="sr" hreflang="sr" data-title="Светлосна година" data-language-autonym="Српски / srpski" data-language-local-name="Serbia" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-stq mw-list-item"><a href="https://stq.wikipedia.org/wiki/Luchtjier" title="Luchtjier – Saterland Frisian" lang="stq" hreflang="stq" data-title="Luchtjier" data-language-autonym="Seeltersk" data-language-local-name="Saterland Frisian" class="interlanguage-link-target"><span>Seeltersk</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Ljus%C3%A5r" title="Ljusår – Swedia" lang="sv" hreflang="sv" data-title="Ljusår" data-language-autonym="Svenska" data-language-local-name="Swedia" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-sw mw-list-item"><a href="https://sw.wikipedia.org/wiki/Mwakanuru" title="Mwakanuru – Swahili" lang="sw" hreflang="sw" data-title="Mwakanuru" data-language-autonym="Kiswahili" data-language-local-name="Swahili" class="interlanguage-link-target"><span>Kiswahili</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%92%E0%AE%B3%E0%AE%BF%E0%AE%AF%E0%AE%BE%E0%AE%A3%E0%AF%8D%E0%AE%9F%E0%AF%81" title="ஒளியாண்டு – Tamil" lang="ta" hreflang="ta" data-title="ஒளியாண்டு" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%95%E0%B0%BE%E0%B0%82%E0%B0%A4%E0%B0%BF_%E0%B0%B8%E0%B0%82%E0%B0%B5%E0%B0%A4%E0%B1%8D%E0%B0%B8%E0%B0%B0%E0%B0%82" title="కాంతి సంవత్సరం – Telugu" lang="te" hreflang="te" data-title="కాంతి సంవత్సరం" data-language-autonym="తెలుగు" data-language-local-name="Telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%9B%E0%B8%B5%E0%B9%81%E0%B8%AA%E0%B8%87" title="ปีแสง – Thai" lang="th" hreflang="th" data-title="ปีแสง" data-language-autonym="ไทย" data-language-local-name="Thai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tk mw-list-item"><a href="https://tk.wikipedia.org/wiki/%C3%9Dagtylyk_%C3%BDyly" title="Ýagtylyk ýyly – Turkmen" lang="tk" hreflang="tk" data-title="Ýagtylyk ýyly" data-language-autonym="Türkmençe" data-language-local-name="Turkmen" class="interlanguage-link-target"><span>Türkmençe</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Sinag-taon" title="Sinag-taon – Tagalog" lang="tl" hreflang="tl" data-title="Sinag-taon" data-language-autonym="Tagalog" data-language-local-name="Tagalog" class="interlanguage-link-target"><span>Tagalog</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/I%C5%9F%C4%B1k_y%C4%B1l%C4%B1" title="Işık yılı – Turki" lang="tr" hreflang="tr" data-title="Işık yılı" data-language-autonym="Türkçe" data-language-local-name="Turki" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%AF%D0%BA%D1%82%D1%8B%D0%BB%D1%8B%D0%BA_%D0%B5%D0%BB%D1%8B" title="Яктылык елы – Tatar" lang="tt" hreflang="tt" data-title="Яктылык елы" data-language-autonym="Татарча / tatarça" data-language-local-name="Tatar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-udm mw-list-item"><a href="https://udm.wikipedia.org/wiki/%D0%AE%D0%B3%D1%8B%D1%82_%D0%B0%D1%80" title="Югыт ар – Udmurt" lang="udm" hreflang="udm" data-title="Югыт ар" data-language-autonym="Удмурт" data-language-local-name="Udmurt" class="interlanguage-link-target"><span>Удмурт</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A1%D0%B2%D1%96%D1%82%D0%BB%D0%BE%D0%B2%D0%B8%D0%B9_%D1%80%D1%96%D0%BA" title="Світловий рік – Ukraina" lang="uk" hreflang="uk" data-title="Світловий рік" data-language-autonym="Українська" data-language-local-name="Ukraina" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-ur mw-list-item"><a href="https://ur.wikipedia.org/wiki/%D9%86%D9%88%D8%B1%DB%8C_%D8%B3%D8%A7%D9%84" title="نوری سال – Urdu" lang="ur" hreflang="ur" data-title="نوری سال" data-language-autonym="اردو" data-language-local-name="Urdu" class="interlanguage-link-target"><span>اردو</span></a></li><li class="interlanguage-link interwiki-uz mw-list-item"><a href="https://uz.wikipedia.org/wiki/Yorug%CA%BBlik_yili" title="Yorugʻlik yili – Uzbek" lang="uz" hreflang="uz" data-title="Yorugʻlik yili" data-language-autonym="Oʻzbekcha / ўзбекча" data-language-local-name="Uzbek" class="interlanguage-link-target"><span>Oʻzbekcha / ўзбекча</span></a></li><li class="interlanguage-link interwiki-vec mw-list-item"><a href="https://vec.wikipedia.org/wiki/Ano_%C5%82uze" title="Ano łuze – Venesia" lang="vec" hreflang="vec" data-title="Ano łuze" data-language-autonym="Vèneto" data-language-local-name="Venesia" class="interlanguage-link-target"><span>Vèneto</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/N%C4%83m_%C3%A1nh_s%C3%A1ng" title="Năm ánh sáng – Vietnam" lang="vi" hreflang="vi" data-title="Năm ánh sáng" data-language-autonym="Tiếng Việt" data-language-local-name="Vietnam" class="interlanguage-link-target"><span>Tiếng Việt</span></a></li><li class="interlanguage-link interwiki-vo mw-list-item"><a href="https://vo.wikipedia.org/wiki/Litayel" title="Litayel – Volapuk" lang="vo" hreflang="vo" data-title="Litayel" data-language-autonym="Volapük" data-language-local-name="Volapuk" class="interlanguage-link-target"><span>Volapük</span></a></li><li class="interlanguage-link interwiki-war mw-list-item"><a href="https://war.wikipedia.org/wiki/Tuig-lamrag" title="Tuig-lamrag – Warai" lang="war" hreflang="war" data-title="Tuig-lamrag" data-language-autonym="Winaray" data-language-local-name="Warai" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E5%85%89%E5%B9%B4" title="光年 – Wu Tionghoa" lang="wuu" hreflang="wuu" data-title="光年" data-language-autonym="吴语" data-language-local-name="Wu Tionghoa" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%A1%E1%83%98%E1%83%9C%E1%83%97%E1%83%94%E1%83%A8_%E1%83%AC%E1%83%90%E1%83%9C%E1%83%90" title="სინთეშ წანა – Mingrelian" lang="xmf" hreflang="xmf" data-title="სინთეშ წანა" data-language-autonym="მარგალური" 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class="vector-pinnable-header-label">Tampilan</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-appearance.pin">pindah ke bilah sisi</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-appearance.unpin">sembunyikan</button> </div> </div> </div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Dari Wikipedia bahasa Indonesia, ensiklopedia bebas</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="id" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r22657712">.mw-parser-output .infobox-subbox{padding:0;border:none;margin:-3px;width:auto;min-width:100%;font-size:100%;clear:none;float:none;background-color:transparent}.mw-parser-output .infobox-3cols-child{margin:auto}.mw-parser-output .infobox .navbar{font-size:100%}body.skin-minerva .mw-parser-output .infobox-header,body.skin-minerva .mw-parser-output .infobox-subheader,body.skin-minerva .mw-parser-output .infobox-above,body.skin-minerva .mw-parser-output .infobox-title,body.skin-minerva .mw-parser-output .infobox-image,body.skin-minerva .mw-parser-output .infobox-full-data,body.skin-minerva .mw-parser-output .infobox-below{text-align:center}</style><table class="infobox" style="background:;"><tbody><tr><th colspan="2" class="infobox-above">Tahun cahaya</th></tr><tr><td colspan="2" class="infobox-image"><span typeof="mw:File"><a href="/wiki/Berkas:12lightyears.gif" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d3/12lightyears.gif/300px-12lightyears.gif" decoding="async" width="300" height="205" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/d3/12lightyears.gif/450px-12lightyears.gif 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/d3/12lightyears.gif/600px-12lightyears.gif 2x" data-file-width="618" data-file-height="423" /></a></span><div class="infobox-caption">Peta menunjukkan bintang-bintang yang terletak dalam <b>12,5 tahun cahaya</b> dari Matahari<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></div></td></tr><tr><th colspan="2" class="infobox-header">Informasi umum</th></tr><tr><th scope="row" class="infobox-label"><div style="display:inline-block; padding:0.1em 0;line-height:1.2em;"><a href="/w/index.php?title=Sistem_pengukuran&action=edit&redlink=1" class="new" title="Sistem pengukuran (halaman belum tersedia)">Sistem satuan</a></div></th><td class="infobox-data"><a href="/wiki/Satuan_astronomi" title="Satuan astronomi">unit astronomi</a></td></tr><tr><th scope="row" class="infobox-label">Besaran</th><td class="infobox-data">panjang</td></tr><tr><th scope="row" class="infobox-label">Simbol</th><td class="infobox-data">ly<sup id="cite_ref-IAUgen_2-0" class="reference"><a href="#cite_note-IAUgen-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup></td></tr><tr><th colspan="2" class="infobox-header">Konversi </th></tr><tr class="nowrap"><td>1 ly<sup id="cite_ref-IAUgen_2-0" class="reference"><a href="#cite_note-IAUgen-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> <i>dalam ...</i></td><td><i>... sama dengan ...</i></td></tr><tr style="display:none"><th colspan="2"> </th></tr><tr><th scope="row" class="infobox-label"><span class="nowrap">   </span>Satuan <a href="/wiki/Sistem_metrik" title="Sistem metrik">metrik</a> (<a href="/wiki/Sistem_Satuan_Internasional" title="Sistem Satuan Internasional">SI</a>)</th><td class="infobox-data"><span class="nowrap">   </span><span class="nowrap"><span data-sort-value="7015946070000000000♠"></span>9,4607<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>15</sup> <a href="/wiki/Meter" title="Meter">m</a></span><br />   <span class="nowrap"><span data-sort-value="7015946070000000000♠"></span>9,4607 <a href="/w/index.php?title=Petameter&action=edit&redlink=1" class="new" title="Petameter (halaman belum tersedia)">Pm</a></span></td></tr><tr><th scope="row" class="infobox-label"><span class="nowrap">   </span>Satuan <a href="/wiki/Satuan_imperial" title="Satuan imperial">imperial</a> & <a href="https://en.wikipedia.org/wiki/United_States_customary_units" class="extiw" title="en:United States customary units">AS</a></th><td class="infobox-data"><span class="nowrap">   </span><span class="nowrap"><span data-sort-value="7015946068963840000♠"></span>5,8786<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>12</sup> <a href="/wiki/Mil" title="Mil">mi</a></span></td></tr><tr><th scope="row" class="infobox-label"><span class="nowrap">   </span><a href="https://en.wikipedia.org/wiki/astronomical_system_of_units" class="extiw" title="en:astronomical system of units">Unit astronomi</a></th><td class="infobox-data"><span class="nowrap">   </span>63.241 <a href="/wiki/Satuan_astronomi" title="Satuan astronomi">au</a>    <span class="nowrap"><span data-sort-value="7015946068746477840♠"></span>0,3066 <a href="/wiki/Parsec" class="mw-redirect" title="Parsec">pc</a></span></td></tr></tbody></table> <p><b>Tahun cahaya</b> (disingkat <b>tc</b>, <a href="/wiki/Bahasa_Inggris" title="Bahasa Inggris">bahasa Inggris</a>: <span lang="en"><i>light year</i></span> atau <b>ly</b>) adalah <a href="/wiki/Satuan_panjang" title="Satuan panjang">satuan panjang</a> yang digunakan untuk menyatakan <a href="/wiki/Jarak_astronomis" title="Jarak astronomis">jarak astronomis</a> dan memiliki nilai sekitar 9,46 triliun <a href="/wiki/Kilometer" title="Kilometer">kilometer</a> (9,46 x 10<sup>12</sup> km) atau 5,88 triliun <a href="/wiki/Mil" title="Mil">mil</a> (5,88 x 10<sup>12</sup> mil).<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>Note 1<span class="cite-bracket">]</span></a></sup> Sebagaimana didefinisikan oleh <a href="/wiki/Persatuan_Astronomi_Internasional" title="Persatuan Astronomi Internasional">Persatuan Astronomi Internasional</a> (IAU), tahun cahaya adalah jarak yang <a href="/wiki/Laju_cahaya" title="Laju cahaya">ditempuh cahaya dalam ruang hampa</a> dalam satu <a href="/wiki/Tahun_Julian" title="Tahun Julian">tahun Julian</a> (365,25 hari).<sup id="cite_ref-IAUgen_2-1" class="reference"><a href="#cite_note-IAUgen-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Karena memuat kata "<a href="/wiki/Tahun" title="Tahun">tahun</a>", istilah tahun cahaya terkadang disalahartikan sebagai satuan waktu. </p><p>Tahun cahaya paling sering digunakan ketika menyatakan jarak ke bintang dan jarak lain pada skala <a href="/wiki/Galaksi" title="Galaksi">galaksi</a>, terutama dalam publikasi non-spesialis dan <a href="/w/index.php?title=Ilmu_pengetahuan_populer&action=edit&redlink=1" class="new" title="Ilmu pengetahuan populer (halaman belum tersedia)">ilmu pengetahuan populer</a>. Satuan yang paling sering digunakan dalam <a href="/wiki/Astrometri" title="Astrometri">astrometri</a> profesional adalah <a href="/wiki/Parsec" class="mw-redirect" title="Parsec">parsec</a> (simbol: pc, sekitar 3,26 tahun cahaya).<sup id="cite_ref-IAUgen_2-2" class="reference"><a href="#cite_note-IAUgen-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="Definisi">Definisi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tahun_cahaya&veaction=edit&section=1" title="Sunting bagian: Definisi" class="mw-editsection-visualeditor"><span>sunting</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tahun_cahaya&action=edit&section=1" title="Sunting kode sumber bagian: Definisi"><span>sunting sumber</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Sebagaimana didefinisikan oleh IAU, tahun cahaya adalah produk dari tahun Julian (365,25 hari sebagai kebalikan dari <a href="/wiki/Kalender_Gregorius" title="Kalender Gregorius">tahun Gregorian</a> 365,2425 hari) dan kecepatan cahaya (299 792 458 m/s).<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>Note 2<span class="cite-bracket">]</span></a></sup> Kedua nilai ini dimasukkan dalam <a href="/w/index.php?title=Konstanta_astronomi&action=edit&redlink=1" class="new" title="Konstanta astronomi (halaman belum tersedia)">Sistem Konstanta Astronomi IAU (1976)</a>, yang digunakan sejak 1984.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> Dari sini, konversi berikut dapat diturunkan. Singkatan yang diakui IAU untuk tahun cahaya adalah ly,<sup id="cite_ref-IAUgen_2-3" class="reference"><a href="#cite_note-IAUgen-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> meskipun standar lain seperti <a href="/w/index.php?title=ISO_80000&action=edit&redlink=1" class="new" title="ISO 80000 (halaman belum tersedia)">ISO 80000</a> menggunakan "l.y."<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> dan simbol-simbol yang dilokalisasi sering kali, seperti "al" dalam <a href="/wiki/Bahasa_Prancis" title="Bahasa Prancis">bahasa Prancis</a> (dari <i><b>a</b>nnée-<b>l</b>umière</i>) dan <a href="/wiki/Bahasa_Spanyol" title="Bahasa Spanyol">bahasa Spanyol</a> (dari <i><b>a</b>ño <b>l</b>uz</i>), "Lj" dalam bahasa Jerman (dari <i><b>L</b>icht<b>j</b>ahr</i>), dll. </p> <dl><dd><table> <tbody><tr> <td rowspan="6" valign="top">1 tahun cahaya   </td> <td>= <span class="nowrap"><span data-sort-value="7015946073047258080♠"></span>9.460</span>.730.472.580.800 <a href="/wiki/Meter" title="Meter">meter</a> (eksak) </td></tr> <tr> <td>≈ <span class="nowrap"><span data-sort-value="7000946100000000000♠"></span>9,461</span> <a href="/w/index.php?title=Petameter&action=edit&redlink=1" class="new" title="Petameter (halaman belum tersedia)">petameter</a> </td></tr> <tr> <td>≈ <span class="nowrap"><span data-sort-value="7000946100000000000♠"></span>9,461</span> triliun <a href="/wiki/Kilometer" title="Kilometer">kilometer</a> </td></tr> <tr> <td>≈ <span class="nowrap"><span data-sort-value="7000587862500000000♠"></span>5,878625</span> triliun <a href="/wiki/Mil" title="Mil">mil</a> </td></tr> <tr> <td>≈ <span class="nowrap"><span data-sort-value="7004632410770000000♠"></span>63.241</span>,077 <a href="/wiki/Satuan_astronomi" title="Satuan astronomi">satuan astronomi</a> </td></tr> <tr> <td>≈ <span class="nowrap"><span data-sort-value="6999306601000000000♠"></span>0,306601</span> <a href="/wiki/Parsec" class="mw-redirect" title="Parsec">parsec</a> </td></tr></tbody></table></dd></dl> <div class="mw-heading mw-heading2"><h2 id="Sejarah">Sejarah</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tahun_cahaya&veaction=edit&section=2" title="Sunting bagian: Sejarah" class="mw-editsection-visualeditor"><span>sunting</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tahun_cahaya&action=edit&section=2" title="Sunting kode sumber bagian: Sejarah"><span>sunting sumber</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Satuan tahun cahaya muncul beberapa tahun setelah sukses melakukan pengukuran jarak ke bintang selain Matahari, oleh <a href="/wiki/Friedrich_Bessel" title="Friedrich Bessel">Friedrich Bessel</a> pada tahun 1838. Bintang itu adalah <a href="/wiki/61_Cygni" title="61 Cygni">61 Cygni</a>, dan ia menggunakan <a href="/w/index.php?title=Heliometer&action=edit&redlink=1" class="new" title="Heliometer (halaman belum tersedia)">heliometer</a> 6,2 inci (160 mm) yang dirancang oleh <a href="/wiki/Joseph_von_Fraunhofer" title="Joseph von Fraunhofer">Joseph von Fraunhofer</a>. Satuan terbesar untuk mengekspresikan jarak melintasi ruang angkasa pada waktu itu adalah satuan astronomi, sama dengan jari-jari orbit Bumi <span class="nowrap">(<span class="nowrap"><span data-sort-value="7011150000000000000♠"></span>1,50<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>8</sup> km</span></span> atau <span class="nowrap"><span class="nowrap"><span data-sort-value="7011149668992000000♠"></span>9,30<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>7</sup> mi</span>).</span> Dalam istilah tersebut, perhitungan trigonometrik berdasarkan <a href="/wiki/Paralaks" title="Paralaks">paralaks</a> 61 Cygni dengan 0,314 detik busur, menunjukkan jarak ke bintang menjadi <span class="nowrap"><span data-sort-value="7005660000000000000♠"></span>660.000</span> satuan astronomi (<span class="nowrap"><span data-sort-value="7016990000000000000♠"></span>9,9<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>13</sup> km</span> atau <span class="nowrap"><span data-sort-value="7016981699840000000♠"></span>6,1<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>13</sup> mi</span>). Bessel menambahkan bahwa cahaya memerlukan 10,3 tahun untuk melintasi jarak ini.<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Dia menyadari bahwa para pembacanya akan menikmati gambaran mental dari perkiraan waktu transit untuk cahaya, tetapi dia menahan diri untuk tidak menggunakan tahun cahaya sebagai satuan. Dia mungkin membenci mengekspresikan jarak dalam tahun cahaya karena itu akan memperburuk keakuratan data paralaksnya karena mengalikan dengan parameter yang tidak pasti dari kecepatan cahaya. Kecepatan cahaya belum diketahui secara pasti pada tahun 1838; nilainya berubah pada tahun 1849 (<a href="/wiki/Hippolyte_Fizeau" title="Hippolyte Fizeau">Fizeau</a>) dan 1862 (<a href="/wiki/L%C3%A9on_Foucault" title="Léon Foucault">Foucault</a>). Itu belum dianggap sebagai konstanta fundamental alam, dan penyebaran cahaya melalui <a href="/wiki/Luminiferous_aether" class="mw-redirect" title="Luminiferous aether">ether</a> atau ruang masih membingungkan. Satuan tahun cahaya muncul, pada tahun 1851 dalam artikel astronomi populer Jerman oleh <a href="https://en.wikipedia.org/wiki/de:Otto_Eduard_Vincenz_Ule" class="extiw" title="w:de:Otto Eduard Vincenz Ule">Otto Ule</a>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> Paradoks nama satuan jarak yang berakhiran "tahun" dijelaskan oleh Ule dengan membandingkannya dengan jam jalan pendakian (<i>Wegstunde</i>). Sebuah buku astronomi populer Jerman kontemporer juga memperhatikan bahwa tahun cahaya adalah nama yang aneh.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> Pada tahun 1868, sebuah jurnal berbahasa Inggris menyebut tahun cahaya sebagai satuan yang digunakan oleh Jerman.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Arthur_Eddington" title="Arthur Eddington">Eddington</a> menyebut tahun cahaya sebagai satuan yang tidak nyaman dan tidak relevan, yang kadang-kadang merangkak dari penggunaan populer menjadi penyelidikan teknis.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p>Meskipun astronom modern lebih sering memilih menggunakan <a href="/wiki/Parsec" class="mw-redirect" title="Parsec">parsec</a>, tahun cahaya juga populer digunakan untuk mengukur bentangan ruang antarbintang dan antargalaksi. </p> <div class="mw-heading mw-heading2"><h2 id="Penggunaan_istilah">Penggunaan istilah</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tahun_cahaya&veaction=edit&section=3" title="Sunting bagian: Penggunaan istilah" class="mw-editsection-visualeditor"><span>sunting</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tahun_cahaya&action=edit&section=3" title="Sunting kode sumber bagian: Penggunaan istilah"><span>sunting sumber</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Jarak yang dinyatakan dalam tahun cahaya termasuk di antara <a href="/wiki/Bintang" title="Bintang">bintang-bintang</a> di area umum yang sama, seperti yang dimiliki oleh <a href="/wiki/Galaksi_spiral#lengan_spiral" title="Galaksi spiral">lengan spiral</a> yang sama atau <a href="/wiki/Gugus_bola" title="Gugus bola">gugus bola</a>. Galaksi-galaksi itu sendiri membentang dari beberapa ribu hingga beberapa ratus ribu tahun cahaya, dan terpisah dari galaksi-galaksi dan <a href="/wiki/Gugusan_galaksi" title="Gugusan galaksi">gugusan galaksi</a> yang berdekatan dengan jutaan tahun cahaya. Jarak ke benda-benda seperti <a href="/wiki/Kuasar" title="Kuasar">kuasar</a> dan <a href="/wiki/Sloan_Great_Wall" class="mw-redirect" title="Sloan Great Wall">Sloan Great Wall</a> mencapai miliaran tahun cahaya. </p> <table class="wikitable"> <caption>Daftar urutan besaran untuk <a href="/wiki/Panjang" title="Panjang">panjang</a> </caption> <tbody><tr> <th>Skala (ly) </th> <th>Nilai </th> <th>Item </th></tr> <tr> <td>10<sup>−9</sup> </td> <td align="right"><span class="nowrap"><span data-sort-value="7008382213511092264♠"></span>40,4<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−9</sup> ly</span> </td> <td>Sinar matahari yang dipantulkan dari permukaan <a href="/wiki/Bulan" title="Bulan">Bulan</a> membutuhkan 1,2-1,3 detik untuk menempuh jarak ke permukaan <a href="/wiki/Bumi" title="Bumi">Bumi</a> (menempuh jarak <span class="nowrap"><span data-sort-value="7005350000000000000♠"></span>350.000</span> hingga <span class="nowrap"><span data-sort-value="7005400000000000000♠"></span>400.000</span> kilometer). </td></tr> <tr> <td rowspan="3">10<sup>−6</sup> </td> <td align="right"><span class="nowrap"><span data-sort-value="7011149479541466776♠"></span>15,8<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−6</sup> ly</span> </td> <td>Satu <a href="/wiki/Satuan_astronomi" title="Satuan astronomi">satuan astronomi</a> (jarak dari <a href="/wiki/Matahari" title="Matahari">Matahari</a> ke Bumi). Dibutuhkan sekitar 499 detik (8,32 menit) untuk cahaya untuk menempuh jarak ini.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7012120151277001776♠"></span>127<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−6</sup> ly</span> </td> <td><a href="/wiki/Wahana_Huygens" title="Wahana Huygens">Wahana Huygens</a> mendarat di <a href="/wiki/Titan_(satelit)" title="Titan (satelit)">Titan</a> dekat <a href="/wiki/Saturnus" title="Saturnus">Saturnus</a> dan mentransmisikan gambar dari permukaannya, 1,2 miliar kilometer dari Bumi. </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7012476820815818072♠"></span>504<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−6</sup> ly</span> </td> <td><a href="/wiki/New_Horizons" title="New Horizons">New Horizons</a> bertemu dengan <a href="/wiki/Pluto" title="Pluto">Pluto</a> pada jarak 4,7 miliar kilometer, dan komunikasi membutuhkan 4 jam 25 menit untuk mencapai Bumi. </td></tr> <tr> <td rowspan="2">10<sup>−3</sup> </td> <td align="right"><span class="nowrap"><span data-sort-value="7013192998901640648♠"></span>2,04<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−3</sup> ly</span> </td> <td><a href="/wiki/Wahana_antariksa" title="Wahana antariksa">Wahana antariksa</a> paling jauh, <a href="/wiki/Voyager_1" title="Voyager 1">Voyager 1</a>, berjarak sekitar 18 jam cahaya dari Bumi pada Oktober 2014.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> Diperlukan waktu sekitar <span class="nowrap"><span data-sort-value="7004175000000000000♠"></span>17.500</span> tahun untuk mencapai satu tahun cahaya (<span class="nowrap"><span data-sort-value="7015946073047258080♠"></span>1,0<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>0</sup> ly</span>) dengan kecepatan saat ini sekitar 17 km/s (<span class="nowrap"><span data-sort-value="7004169875200000000♠"></span>38.000</span> mph) relatif terhadap Matahari. Pada 12 September 2013, para ilmuwan NASA mengumumkan bahwa Voyager 1 telah memasuki <a href="/wiki/Medium_antarbintang" title="Medium antarbintang">medium antarbintang</a> pada 25 Agustus 2012, menjadi objek buatan manusia pertama yang meninggalkan <a href="/wiki/Tata_Surya" title="Tata Surya">Tata Surya</a>.<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td><span class="nowrap"><span data-sort-value="7013215704654774842♠"></span>2,28<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>−3</sup> ly</span> </td> <td>Voyager 1 pada Oktober 2018, hampir 20 jam cahaya dari Bumi </td></tr> <tr> <td rowspan="7">10<sup>0</sup> </td> <td align="right"><span class="nowrap"><span data-sort-value="7016151371687561292♠"></span>1,6<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>0</sup> ly</span> </td> <td><a href="/wiki/Awan_Oort" title="Awan Oort">Awan Oort</a> berdiameter sekitar dua tahun cahaya. Batas bagian dalamnya diperkirakan sebesar <span class="nowrap"><span data-sort-value="7015747989353500000♠"></span>50.000</span> au, dengan tepi terluarnya sebesar <span class="nowrap"><span data-sort-value="7016149597870700000♠"></span>100.000</span> au. </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7016189214609451616♠"></span>2,0<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>0</sup> ly</span> </td> <td>Jangkauan maksimum dari pengaruh gravitasi Matahari (<a href="/w/index.php?title=Hill_sphere&action=edit&redlink=1" class="new" title="Hill sphere (halaman belum tersedia)">Hill sphere</a>/<a href="/w/index.php?title=Roche_sphere&action=edit&redlink=1" class="new" title="Roche sphere (halaman belum tersedia)">Roche sphere</a>, <span class="nowrap"><span data-sort-value="7016186997338375000♠"></span>125.000</span> au). </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7016399242825942909♠"></span>4,22<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>0</sup> ly</span> </td> <td><a href="/wiki/Bintang" title="Bintang">Bintang</a> terdekat yang diketahui (selain Matahari), <a href="/wiki/Proxima_Centauri" title="Proxima Centauri">Proxima Centauri</a>, berjarak sekitar 4,22 tahun cahaya.<sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7016813622820641948♠"></span>8,60<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>0</sup> ly</span> </td> <td><a href="/wiki/Sirius" title="Sirius">Sirius</a>, bintang paling terang di langit malam. Dua kali lebih besar dan 25 kali lebih <a href="/wiki/Luminositas" title="Luminositas">terang</a> dari Matahari. </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7017112582692623711♠"></span>11,90<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>0</sup> ly</span> </td> <td><a href="/w/index.php?title=HD_10700_e&action=edit&redlink=1" class="new" title="HD 10700 e (halaman belum tersedia)">HD 10700 e</a>, kandidat planet ekstrasurya untuk planet laik huni. 6,6 kali lebih besar dari bumi, ia berada di tengah-tengah zona laik huni bintang <a href="/wiki/Tau_Ceti" title="Tau Ceti">Tau Ceti</a><sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-19" class="reference"><a href="#cite_note-19"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7017193944974687906♠"></span>20,5<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>0</sup> ly</span> </td> <td><a href="/wiki/Gliese_581" title="Gliese 581">Gliese 581</a>, bintang katai merah dengan beberapa planet ekstrasurya yang terdeteksi. </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7018293282644650004♠"></span>310<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>0</sup> ly</span> </td> <td><a href="/wiki/Canopus" title="Canopus">Canopus</a>, bintang paling terang kedua di langit malam, setelah Sirius, dengan magnitudo tampak −0.72. </td></tr> <tr> <td rowspan="4">10<sup>3</sup> </td> <td align="right"><span class="nowrap"><span data-sort-value="7019283821914177424♠"></span>3<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>3</sup> ly</span> </td> <td><a href="/w/index.php?title=A0620-00&action=edit&redlink=1" class="new" title="A0620-00 (halaman belum tersedia)">A0620-00</a>, <a href="/wiki/Lubang_hitam" title="Lubang hitam">lubang hitam</a> terdekat yang diketahui, berjarak sekitar <span class="nowrap"><span data-sort-value="7003300000000000000♠"></span>3000</span> tahun cahaya. </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7020245978992287100♠"></span>26<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>3</sup> ly</span> </td> <td><a href="/wiki/Pusat_galaksi" class="mw-redirect" title="Pusat galaksi">Pusat</a> <a href="/wiki/Bima_Sakti" title="Bima Sakti">Bima Sakti</a> berjarak sekitar <span class="nowrap"><span data-sort-value="7004260000000000000♠"></span>26.000</span> tahun cahaya.<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7020946073047258079♠"></span>100<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>3</sup> ly</span> </td> <td>Diameter <a href="/wiki/Bima_Sakti" title="Bima Sakti">Bima Sakti</a> sekitar <span class="nowrap"><span data-sort-value="7005100000000000000♠"></span>100.000</span> tahun cahaya. </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7021156102052797583♠"></span>165<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>3</sup> ly</span> </td> <td><a href="/wiki/R136a1" title="R136a1">R136a1</a>, di <a href="/wiki/Awan_Magellan_Besar" title="Awan Magellan Besar">Awan Magellan Besar</a>, bintang paling terang yang diketahui, dengan 8,7 juta kali <a href="/wiki/Luminositas" title="Luminositas">luminositas</a> Matahari, memiliki magnitudo tampak 12,77, lebih terang dari <a href="/w/index.php?title=3C_273&action=edit&redlink=1" class="new" title="3C 273 (halaman belum tersedia)">3C 273</a>. </td></tr> <tr> <td rowspan="4">10<sup>6</sup> </td> <td align="right"><span class="nowrap"><span data-sort-value="7022236518261814520♠"></span>2,5<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>6</sup> ly</span> </td> <td><a href="/wiki/Galaksi_Andromeda" title="Galaksi Andromeda">Galaksi Andromeda</a> berjarak sekitar 2,5 juta tahun cahaya. </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7022283821914177424♠"></span>3<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>6</sup> ly</span> </td> <td><a href="/wiki/Galaksi_Triangulum" title="Galaksi Triangulum">Galaksi Triangulum</a> (<a href="/wiki/Objek_Messier" title="Objek Messier">M33</a>), sekitar 3 juta tahun cahaya, adalah objek paling jauh yang terlihat oleh mata telanjang. </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7023558183097882267♠"></span>59<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>6</sup> ly</span> </td> <td><a href="/wiki/Gugusan_galaksi" title="Gugusan galaksi">Gugusan galaksi</a> besar terdekat, <a href="/wiki/Gugusan_Virgo" class="mw-redirect" title="Gugusan Virgo">Gugusan Virgo</a>, berjarak sekitar 59 juta tahun cahaya. </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7008150000000000000♠"></span>150<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>6</sup></span> – <span class="nowrap"><span data-sort-value="7024236518261814520♠"></span>250<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>6</sup> ly</span> </td> <td><a href="/wiki/Penarik_Raksasa" class="mw-redirect" title="Penarik Raksasa">Penarik Raksasa</a> terletak pada jarak antara 150 dan 250 juta tahun cahaya (yang terakhir merupakan perkiraan terbaru). </td></tr> <tr> <td rowspan="3">10<sup>9</sup> </td> <td align="right"><span class="nowrap"><span data-sort-value="7025113528765670969♠"></span>1,2<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>9</sup> ly</span> </td> <td><a href="/wiki/Sloan_Great_Wall" class="mw-redirect" title="Sloan Great Wall">Sloan Great Wall</a> (jangan disamakan dengan <a href="/w/index.php?title=Great_Wall_(astronomi)&action=edit&redlink=1" class="new" title="Great Wall (astronomi) (halaman belum tersedia)">Great Wall</a> dan <a href="/w/index.php?title=Hercules%E2%80%93Corona_Borealis_Great_Wall&action=edit&redlink=1" class="new" title="Hercules–Corona Borealis Great Wall (halaman belum tersedia)">Her – CrB GW</a>) telah diukur sekitar satu miliar tahun cahaya. </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7025227057531341939♠"></span>2,4<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>9</sup> ly</span> </td> <td><a href="/w/index.php?title=3C_273&action=edit&redlink=1" class="new" title="3C 273 (halaman belum tersedia)">3C 273</a>, secara optik merupakan <a href="/wiki/Kuasar" title="Kuasar">kuasar</a> paling terang, dengan magnitudo tampak 12.9, lebih redup daripada <a href="/wiki/R136a1" title="R136a1">R136a1</a>. 3C 273 berjarak sekitar 2,4 miliar tahun cahaya. </td></tr> <tr> <td align="right"><span class="nowrap"><span data-sort-value="7026432355382596942♠"></span>45,7<span style="margin-left:0.25em;margin-right:0.15em;">×</span>10<sup>9</sup> ly</span> </td> <td><a href="/wiki/Jarak_comoving" title="Jarak comoving">Jarak comoving</a> dari Bumi ke tepi alam semesta yang terlihat sekitar 45,7 miliar tahun cahaya ke segala arah; ini adalah <a href="/wiki/Jari-jari" title="Jari-jari">jari-jari</a> comoving dari <a href="/wiki/Alam_semesta_teramati" title="Alam semesta teramati">alam semesta teramati</a>. Ini lebih besar dari <a href="/wiki/Usia_alam_semesta" class="mw-redirect" title="Usia alam semesta">usia alam semesta</a> yang ditentukan oleh <a href="/wiki/Radiasi_latar_belakang_kosmik" class="mw-redirect" title="Radiasi latar belakang kosmik">radiasi latar belakang kosmik</a>. </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Satuan_terkait">Satuan terkait</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tahun_cahaya&veaction=edit&section=4" title="Sunting bagian: Satuan terkait" class="mw-editsection-visualeditor"><span>sunting</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tahun_cahaya&action=edit&section=4" title="Sunting kode sumber bagian: Satuan terkait"><span>sunting sumber</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Jarak antara objek dalam <a href="/wiki/Sistem_bintang" title="Sistem bintang">sistem bintang</a> cenderung menjadi pecahan kecil dari tahun cahaya, dan biasanya dinyatakan dalam <a href="/wiki/Satuan_astronomi" title="Satuan astronomi">satuan astronomi</a>. Namun, satuan panjang yang lebih kecil juga dapat dibentuk dengan mengalikan satuan waktu dengan kecepatan cahaya. Sebagai contoh, <a href="/w/index.php?title=Detik-cahaya&action=edit&redlink=1" class="new" title="Detik-cahaya (halaman belum tersedia)">detik-cahaya</a>, berguna dalam astronomi, telekomunikasi dan fisika relativistik, persis <span class="nowrap"><span data-sort-value="7008299792458000000♠"></span>299.792</span>.458 meter atau <span class="template-frac">⅟<span class="nowrap"><span data-sort-value="7007315576000000000♠"></span>31.557</span>.600</span> tahun cahaya. Satuan seperti menit-cahaya, jam-cahaya, dan hari-cahaya kadang-kadang digunakan dalam publikasi <a href="/w/index.php?title=Ilmu_pengetahuan_populer&action=edit&redlink=1" class="new" title="Ilmu pengetahuan populer (halaman belum tersedia)">ilmu pengetahuan populer</a>. Bulan-cahaya, kira-kira satu per dua belas tahun cahaya, juga digunakan sesekali untuk ukuran perkiraan.<sup id="cite_ref-22" class="reference"><a href="#cite_note-22"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-23" class="reference"><a href="#cite_note-23"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> <a href="/w/index.php?title=Planetarium_Hayden&action=edit&redlink=1" class="new" title="Planetarium Hayden (halaman belum tersedia)">Planetarium Hayden</a> menentukan bulan cahaya lebih tepatnya 30 hari waktu perjalanan cahaya.<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Lihat_pula">Lihat pula</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tahun_cahaya&veaction=edit&section=5" title="Sunting bagian: Lihat pula" class="mw-editsection-visualeditor"><span>sunting</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tahun_cahaya&action=edit&section=5" title="Sunting kode sumber bagian: Lihat pula"><span>sunting sumber</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Jarak_astronomis" title="Jarak astronomis">Jarak astronomis</a></li> <li><a href="/wiki/Kecepatan_cahaya" class="mw-redirect" title="Kecepatan cahaya">Kecepatan cahaya</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="Catatan">Catatan</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tahun_cahaya&veaction=edit&section=6" title="Sunting bagian: Catatan" class="mw-editsection-visualeditor"><span>sunting</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tahun_cahaya&action=edit&section=6" title="Sunting kode sumber bagian: Catatan"><span>sunting sumber</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r18833634">.mw-parser-output .reflist{font-size:90%;margin-bottom:0.5em;list-style-type:decimal}.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 reflist-columns references-column-width" style="column-width: 30em;"> <ol class="references"> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text">Satu triliun di sini <a href="/wiki/Skala_panjang_dan_pendek" class="mw-redirect" title="Skala panjang dan pendek">dianggap</a> 10<sup>12</sup> (satu juta juta, atau biliun dalam skala panjang).</span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text">Kecepatan cahaya tepatnya <span class="nowrap"><span data-sort-value="7008299792458000000♠"></span>299.792</span>.458</span> m/s menurut definisi meter. </li> </ol></div> <div class="mw-heading mw-heading2"><h2 id="Referensi">Referensi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Tahun_cahaya&veaction=edit&section=7" title="Sunting bagian: Referensi" class="mw-editsection-visualeditor"><span>sunting</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Tahun_cahaya&action=edit&section=7" title="Sunting kode sumber bagian: Referensi"><span>sunting sumber</span></a><span class="mw-editsection-bracket">]</span></span></div> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r18833634"><div class="reflist"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.atlasoftheuniverse.com/12lys.html">The Universe within 12.5 Light Years: The Nearest Stars</a></span> </li> <li id="cite_note-IAUgen-2"><span class="mw-cite-backlink">^ <a href="#cite_ref-IAUgen_2-0"><sup><i><b>a</b></i></sup></a> <a href="#cite_ref-IAUgen_2-1"><sup><i><b>b</b></i></sup></a> <a href="#cite_ref-IAUgen_2-2"><sup><i><b>c</b></i></sup></a> <a href="#cite_ref-IAUgen_2-3"><sup><i><b>d</b></i></sup></a></span> <span class="reference-text"><cite id="CITEREFInternational_Astronomical_Union" class="citation">International Astronomical Union, <a rel="nofollow" class="external text" href="http://www.iau.org/public/themes/measuring/"><i>Measuring the Universe: The IAU and Astronomical Units</i></a><span class="reference-accessdate">, diakses tanggal <span class="nowrap">10 November</span> 2013</span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Measuring+the+Universe%3A+The+IAU+and+Astronomical+Units&rft.au=International+Astronomical+Union&rft_id=http%3A%2F%2Fwww.iau.org%2Fpublic%2Fthemes%2Fmeasuring%2F&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text">"<a rel="nofollow" class="external text" href="http://asa.usno.navy.mil/static/files/2009/Astronomical_Constants_2009.pdf">Selected Astronomical Constants</a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140726132053/http://asa.usno.navy.mil/static/files/2009/Astronomical_Constants_2009.pdf">Diarsipkan</a> 2014-07-26 di <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a>." in <i><a href="/w/index.php?title=Astronomical_Almanac&action=edit&redlink=1" class="new" title="Astronomical Almanac (halaman belum tersedia)">Astronomical Almanac</a></i>, p. 6.</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">ISO 80000-3:2006 Quantities and Units – Space and Time</span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text">IEEE/ASTM SI 10-2010, American National Standard for Metric Practice</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"><cite class="citation journal">Bessel, Friedrich (1839). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=UdChCg32-a0C&pg=PA71&dq=parallax+657700&hl=nl&sa=X&ei=ielfU_TIEYWe0QX91oGABg&ved=0CFMQ6AEwBA#v=onepage&q=light%20employs&f=false">"On the parallax of the star 61 Cygni"</a>. <i>London and Edinburgh Philosophical Magazine and Journal of Science</i>. <b>14</b>: 68–72<span class="reference-accessdate">. Diakses tanggal <span class="nowrap">4 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.jtitle=London+and+Edinburgh+Philosophical+Magazine+and+Journal+of+Science&rft.atitle=On+the+parallax+of+the+star+61+Cygni&rft.volume=14&rft.pages=68-72&rft.date=1839&rft.aulast=Bessel&rft.aufirst=Friedrich&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DUdChCg32-a0C%26pg%3DPA71%26dq%3Dparallax%2B657700%26hl%3Dnl%26sa%3DX%26ei%3DielfU_TIEYWe0QX91oGABg%26ved%3D0CFMQ6AEwBA%23v%3Donepage%26q%3Dlight%2520employs%26f%3Dfalse&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span> Bessel's statement that light employs 10.3 years to traverse the distance.</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"><cite class="citation journal">Ule, Otto (1851). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=QtBGAAAAcAAJ&pg=PA728&dq=%22lichtjahre%22&hl=nl&sa=X&ei=pto5U6byN8TD0QW1v4HIDw&redir_esc=y#v=onepage&q=%22lichtjahre%22&f=false">"Was wir in den Sternen lesen"</a>. <i>Deutsches Museum: Zeitschrift für Literatur, Kunst und Öffentliches Leben</i>. <b>1</b>: 721–738<span class="reference-accessdate">. Diakses tanggal <span class="nowrap">4 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.jtitle=Deutsches+Museum%3A+Zeitschrift+f%C3%BCr+Literatur%2C+Kunst+und+%C3%96ffentliches+Leben&rft.atitle=Was+wir+in+den+Sternen+lesen&rft.volume=1&rft.pages=721-738&rft.date=1851&rft.aulast=Ule&rft.aufirst=Otto&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DQtBGAAAAcAAJ%26pg%3DPA728%26dq%3D%2522lichtjahre%2522%26hl%3Dnl%26sa%3DX%26ei%3Dpto5U6byN8TD0QW1v4HIDw%26redir_esc%3Dy%23v%3Donepage%26q%3D%2522lichtjahre%2522%26f%3Dfalse&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span></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"><cite class="citation book">Diesterweg, Adolph Wilhelm (1855). <a rel="nofollow" class="external text" href="https://books.google.com/books?id=0QIrAAAAcAAJ&pg=PA250&dq=%22lichtjahr%22&hl=nl&sa=X&ei=I9o5U-jUO8O40QXZkoGgAQ&redir_esc=y#v=onepage&q=seltsamer%20weise&f=false"><i>Populäre Himmelskunde u. astronomische Geographie</i></a>. hlm. 250.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Popul%C3%A4re+Himmelskunde+u.+astronomische+Geographie&rft.pages=250&rft.date=1855&rft.aulast=Diesterweg&rft.aufirst=Adolph+Wilhelm&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3D0QIrAAAAcAAJ%26pg%3DPA250%26dq%3D%2522lichtjahr%2522%26hl%3Dnl%26sa%3DX%26ei%3DI9o5U-jUO8O40QXZkoGgAQ%26redir_esc%3Dy%23v%3Donepage%26q%3Dseltsamer%2520weise%26f%3Dfalse&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></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"><cite class="citation book"><a rel="nofollow" class="external text" href="https://books.google.com/books?id=Dko5AQAAMAAJ&pg=PA240&dq=%22light+years%22+%22as+the+Germans+call+the+space+traversed+by+light+in+a+year%22&hl=nl&sa=X&ei=jjdiU8u9N8PDPNmrgdAO&redir_esc=y#v=onepage&q=%22light%20years%22%20%22as%20the%20Germans%20call%20the%20space%20traversed%20by%20light%20in%20a%20year%22&f=false"><i>The Student and Intellectual Observer of Science, Literature and Art</i></a><span class="reference-accessdate">. Diakses tanggal <span class="nowrap">1 November</span> 2014</span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Student+and+Intellectual+Observer+of+Science%2C+Literature+and+Art&rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DDko5AQAAMAAJ%26pg%3DPA240%26dq%3D%2522light%2Byears%2522%2B%2522as%2Bthe%2BGermans%2Bcall%2Bthe%2Bspace%2Btraversed%2Bby%2Blight%2Bin%2Ba%2Byear%2522%26hl%3Dnl%26sa%3DX%26ei%3DjjdiU8u9N8PDPNmrgdAO%26redir_esc%3Dy%23v%3Donepage%26q%3D%2522light%2520years%2522%2520%2522as%2520the%2520Germans%2520call%2520the%2520space%2520traversed%2520by%2520light%2520in%2520a%2520year%2522%26f%3Dfalse&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></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"><cite class="citation web"><a rel="nofollow" class="external text" href="https://archive.org/stream/stellarmovements00eddirich#page/14/mode/2up/search/light+year">"Stellar movements and the structure of the universe"</a><span class="reference-accessdate">. Diakses tanggal <span class="nowrap">1 November</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=Stellar+movements+and+the+structure+of+the+universe&rft_id=https%3A%2F%2Farchive.org%2Fstream%2Fstellarmovements00eddirich%23page%2F14%2Fmode%2F2up%2Fsearch%2Flight%2Byear&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><cite class="citation">"Chapter 1, Table 1-1", <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140419043412/http://www.iers.org/MainDisp.csl?pid=46-25776"><i>IERS Conventions (2003)</i></a>, diarsipkan dari <a rel="nofollow" class="external text" href="http://www.iers.org/MainDisp.csl?pid=46-25776">versi asli</a> tanggal 2014-04-19<span class="reference-accessdate">, diakses tanggal <span class="nowrap">2018-12-29</span></span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Chapter+1%2C+Table+1-1&rft.btitle=IERS+Conventions+%282003%29&rft_id=http%3A%2F%2Fwww.iers.org%2FMainDisp.csl%3Fpid%3D46-25776&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><cite class="citation"><a rel="nofollow" class="external text" href="https://voyager.jpl.nasa.gov/where/index.html"><i>WHERE ARE THE VOYAGERS?</i></a><span class="reference-accessdate">, diakses tanggal <span class="nowrap">14 October</span> 2014</span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=WHERE+ARE+THE+VOYAGERS%3F&rft_id=http%3A%2F%2Fvoyager.jpl.nasa.gov%2Fwhere%2Findex.html&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><b><a href="#cite_ref-15">^</a></b></span> <span class="reference-text"><cite class="citation"><a rel="nofollow" class="external text" href="https://www.nasa.gov/mission_pages/voyager/voyager20130912.html#.VD37P410yCg"><i>NASA Spacecraft Embarks on Historic Journey Into Interstellar Space</i></a><span class="reference-accessdate">, diakses tanggal <span class="nowrap">14 October</span> 2014</span></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=NASA+Spacecraft+Embarks+on+Historic+Journey+Into+Interstellar+Space&rft_id=http%3A%2F%2Fwww.nasa.gov%2Fmission_pages%2Fvoyager%2Fvoyager20130912.html%23.VD37P410yCg&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><b><a href="#cite_ref-16">^</a></b></span> <span class="reference-text"><cite id="CITEREFNASA" class="citation"><a href="/wiki/NASA" class="mw-redirect" title="NASA">NASA</a>, <a rel="nofollow" class="external text" href="https://heasarc.gsfc.nasa.gov/docs/cosmic/nearest_star_info.html"><i>Cosmic Distance Scales – The Nearest Star</i></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Cosmic+Distance+Scales+%E2%80%93+The+Nearest+Star&rft.au=NASA&rft_id=http%3A%2F%2Fheasarc.gsfc.nasa.gov%2Fdocs%2Fcosmic%2Fnearest_star_info.html&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><b><a href="#cite_ref-17">^</a></b></span> <span class="reference-text"><cite class="citation"><a rel="nofollow" class="external text" href="http://www.daviddarling.info/encyclopedia/P/ProximaCen.html">"Proxima Centauri (Gliese 551)"</a>, <i>Encyclopedia of Astrobiology, Astronomy, and Spaceflight</i></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=Proxima+Centauri+%28Gliese+551%29&rft.btitle=Encyclopedia+of+Astrobiology%2C+Astronomy%2C+and+Spaceflight&rft_id=http%3A%2F%2Fwww.daviddarling.info%2Fencyclopedia%2FP%2FProximaCen.html&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><b><a href="#cite_ref-18">^</a></b></span> <span class="reference-text"><cite class="citation web"><a rel="nofollow" class="external text" href="https://www.bbc.co.uk/news/science-environment-20770103">"Tau Ceti's planets nearest around single, Sun-like star"</a>. <i>BBC News</i>. 19 December 2012<span class="reference-accessdate">. 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(2000), <a rel="nofollow" class="external text" href="http://iopscience.iop.org/article/10.1086/316512/pdf">"The Distance to the Galactic Center"</a>, <i>Publications of the Astronomical Society of the Pacific</i>, <b>112</b> (768): 202, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2000PASP..112..202M">2000PASP..112..202M</a>, <a href="/wiki/Digital_object_identifier" class="mw-redirect" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1086%2F316512">10.1086/316512</a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Publications+of+the+Astronomical+Society+of+the+Pacific&rft.atitle=The+Distance+to+the+Galactic+Center&rft.volume=112&rft.issue=768&rft.pages=202&rft.date=2000&rft_id=info%3Adoi%2F10.1086%2F316512&rft_id=info%3Abibcode%2F2000PASP..112..202M&rft.aulast=McNamara&rft.aufirst=D.+H.&rft.au=Madsen%2C+J.+B.&rft.au=Barnes%2C+J.&rft.au=Ericksen%2C+B.+F.&rft_id=http%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.1086%2F316512%2Fpdf&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-22"><span class="mw-cite-backlink"><b><a href="#cite_ref-22">^</a></b></span> <span class="reference-text"><cite id="CITEREFFujisawa,_K.Inoue,_M.Kobayashi,_H.Murata,_Y.2000" class="citation">Fujisawa, K.; Inoue, M.; Kobayashi, H.; Murata, Y.; Wajima, K.; Kameno, S.; Edwards, P. G.; Hirabayashi, H.; Morimoto, M. (2000), <a rel="nofollow" class="external text" href="https://web.archive.org/web/20090902035920/http://sciencelinks.jp/j-east/article/200123/000020012301A0179284.php">"Large Angle Bending of the Light-Month Jet in Centaurus A"</a>, <i>Publications of the Astronomical Society of Japan</i>, <b>52</b> (6): 1021–26, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/2000PASJ...52.1021F">2000PASJ...52.1021F</a>, <a href="/wiki/Digital_object_identifier" class="mw-redirect" title="Digital object identifier">doi</a>:<a rel="nofollow" class="external text" href="https://doi.org/10.1093%2Fpasj%2F52.6.1021">10.1093/pasj/52.6.1021</a>, diarsipkan dari <a rel="nofollow" class="external text" href="http://sciencelinks.jp/j-east/article/200123/000020012301A0179284.php">versi asli</a> tanggal 2009-09-02</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.jtitle=Publications+of+the+Astronomical+Society+of+Japan&rft.atitle=Large+Angle+Bending+of+the+Light-Month+Jet+in+Centaurus+A&rft.volume=52&rft.issue=6&rft.pages=1021-26&rft.date=2000&rft_id=info%3Adoi%2F10.1093%2Fpasj%2F52.6.1021&rft_id=info%3Abibcode%2F2000PASJ...52.1021F&rft.au=Fujisawa%2C+K.&rft.au=Inoue%2C+M.&rft.au=Kobayashi%2C+H.&rft.au=Murata%2C+Y.&rft.au=Wajima%2C+K.&rft.au=Kameno%2C+S.&rft.au=Edwards%2C+P.+G.&rft.au=Hirabayashi%2C+H.&rft.au=Morimoto%2C+M.&rft_id=http%3A%2F%2Fsciencelinks.jp%2Fj-east%2Farticle%2F200123%2F000020012301A0179284.php&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-23"><span class="mw-cite-backlink"><b><a href="#cite_ref-23">^</a></b></span> <span class="reference-text"><cite id="CITEREFJunor,_W.Biretta,_J._A.1994" class="citation">Junor, W.; Biretta, J. A. (1994), "The Inner Light-Month of the M87 Jet", dalam Zensus, J. Anton; Kellermann; Kenneth I., <i>Compact Extragalactic Radio Sources, Proceedings of the NRAO workshop held at Socorro, New Mexico, February 11–12, 1994</i>, Green Bank, WV: National Radio Astronomy Observatory (NRAO), hlm. 97, <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>:<a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1994cers.conf...97J">1994cers.conf...97J</a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=bookitem&rft.atitle=The+Inner+Light-Month+of+the+M87+Jet&rft.btitle=Compact+Extragalactic+Radio+Sources%2C+Proceedings+of+the+NRAO+workshop+held+at+Socorro%2C+New+Mexico%2C+February+11%E2%80%9312%2C+1994&rft.place=Green+Bank%2C+WV&rft.pages=97&rft.pub=National+Radio+Astronomy+Observatory+%28NRAO%29&rft.date=1994&rft_id=info%3Abibcode%2F1994cers.conf...97J&rft.au=Junor%2C+W.&rft.au=Biretta%2C+J.+A.&rfr_id=info%3Asid%2Fid.wikipedia.org%3ATahun+cahaya" class="Z3988"><span style="display:none;"> </span></span></span> </li> <li id="cite_note-24"><span class="mw-cite-backlink"><b><a href="#cite_ref-24">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://www.haydenplanetarium.org/universe/duguide/app_light_travel_time_dista.php">Light-Travel Time and Distance by the Hayden Planetarium</a> Accessed October 2010.</span> </li> </ol></div></div> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r23782733">.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 ol 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