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sitedir-ltr mw-hide-empty-elt ns-0 ns-subject mw-editable page-Cel rootpage-Cel skin-vector-2022 action-view"><a class="mw-jump-link" href="#bodyContent">Vés al contingut</a> <div class="vector-header-container"> <header class="vector-header mw-header"> <div class="vector-header-start"> <nav class="vector-main-menu-landmark" aria-label="Lloc"> <div id="vector-main-menu-dropdown" class="vector-dropdown vector-main-menu-dropdown vector-button-flush-left vector-button-flush-right" > <input type="checkbox" id="vector-main-menu-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-main-menu-dropdown" class="vector-dropdown-checkbox " aria-label="Menú principal" > <label id="vector-main-menu-dropdown-label" for="vector-main-menu-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-menu mw-ui-icon-wikimedia-menu"></span> <span class="vector-dropdown-label-text">Menú principal</span> </label> <div class="vector-dropdown-content"> <div id="vector-main-menu-unpinned-container" class="vector-unpinned-container"> <div id="vector-main-menu" class="vector-main-menu vector-pinnable-element"> <div class="vector-pinnable-header vector-main-menu-pinnable-header vector-pinnable-header-unpinned" data-feature-name="main-menu-pinned" data-pinnable-element-id="vector-main-menu" data-pinned-container-id="vector-main-menu-pinned-container" data-unpinned-container-id="vector-main-menu-unpinned-container" > <div class="vector-pinnable-header-label">Menú principal</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-main-menu.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-main-menu.unpin">amaga</button> </div> <div id="p-navigation" class="vector-menu mw-portlet mw-portlet-navigation" > <div class="vector-menu-heading"> Navegació </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-mainpage-description" class="mw-list-item"><a href="/wiki/Portada" title="Visiteu la pàgina principal [z]" accesskey="z"><span>Portada</span></a></li><li id="n-randompage" class="mw-list-item"><a href="/wiki/Especial:Article_aleatori" title="Carrega una pàgina a l’atzar [x]" accesskey="x"><span>Article a l'atzar</span></a></li><li id="n-Articles-de-qualitat" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Articles_de_qualitat"><span>Articles de qualitat</span></a></li> </ul> </div> </div> <div id="p-Comunitat" class="vector-menu mw-portlet mw-portlet-Comunitat" > <div class="vector-menu-heading"> Comunitat </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="n-portal" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Portal" title="Sobre el projecte, què podeu fer, on trobareu les coses"><span>Portal viquipedista</span></a></li><li id="n-Agenda-d'actes" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Trobades"><span>Agenda d'actes</span></a></li><li id="n-recentchanges" class="mw-list-item"><a href="/wiki/Especial:Canvis_recents" title="Una llista dels canvis recents al wiki [r]" accesskey="r"><span>Canvis recents</span></a></li><li id="n-La-taverna" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:La_taverna"><span>La taverna</span></a></li><li id="n-contactpage" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Contacte"><span>Contacte</span></a></li><li id="n-Xat" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Canals_IRC"><span>Xat</span></a></li><li id="n-help" class="mw-list-item"><a href="/wiki/Viquip%C3%A8dia:Ajuda" title="El lloc per a saber més coses"><span>Ajuda</span></a></li> </ul> </div> </div> </div> </div> </div> </div> </nav> <a href="/wiki/Portada" 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="Viquipèdia" src="/static/images/mobile/copyright/wikipedia-wordmark-ca.svg" style="width: 7.5em; height: 1.4375em;"> <img class="mw-logo-tagline" alt="l'Enciclopèdia Lliure" src="/static/images/mobile/copyright/wikipedia-tagline-ca.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/Especial:Cerca" class="cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only search-toggle" title="Cerca a la Viquipèdia [f]" accesskey="f"><span class="vector-icon mw-ui-icon-search mw-ui-icon-wikimedia-search"></span> <span>Cerca</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="Cerca a Viquipèdia" aria-label="Cerca a Viquipèdia" autocapitalize="sentences" title="Cerca a la Viquipèdia [f]" accesskey="f" id="searchInput" > <span class="cdx-text-input__icon cdx-text-input__start-icon"></span> </div> <input type="hidden" name="title" value="Especial:Cerca"> </div> <button class="cdx-button cdx-search-input__end-button">Cerca</button> </form> </div> </div> </div> <nav class="vector-user-links vector-user-links-wide" aria-label="Eines personals"> <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="Aparença"> <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="Aparença" > <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">Aparença</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_ca.wikipedia.org&uselang=ca" class=""><span>Donatius</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=Especial:Crea_compte&returnto=Cel" title="Us animem a crear un compte i iniciar una sessió, encara que no és obligatori" class=""><span>Crea un compte</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=Especial:Registre_i_entrada&returnto=Cel" title="Us animem a registrar-vos, però no és obligatori [o]" accesskey="o" class=""><span>Inicia la sessió</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="Més opcions" > <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="Eines personals" > <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">Eines personals</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Menú d'usuari" > <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_ca.wikipedia.org&uselang=ca"><span>Donatius</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Crea_compte&returnto=Cel" title="Us animem a crear un compte i iniciar una sessió, encara que no és obligatori"><span class="vector-icon mw-ui-icon-userAdd mw-ui-icon-wikimedia-userAdd"></span> <span>Crea un compte</span></a></li><li id="pt-login" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Especial:Registre_i_entrada&returnto=Cel" title="Us animem a registrar-vos, però no és obligatori [o]" accesskey="o"><span class="vector-icon mw-ui-icon-logIn mw-ui-icon-wikimedia-logIn"></span> <span>Inicia la sessió</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"> Pàgines per a editors no registrats <a href="/wiki/Ajuda:Introducci%C3%B3" aria-label="Vegeu més informació sobre l'edició"><span>més informació</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/Especial:Contribucions_pr%C3%B2pies" title="Una llista de les modificacions fetes des d'aquesta adreça IP [y]" accesskey="y"><span>Contribucions</span></a></li><li id="pt-anontalk" class="mw-list-item"><a href="/wiki/Especial:Discussi%C3%B3_personal" title="Discussió sobre les edicions per aquesta adreça ip. [n]" accesskey="n"><span>Discussió per aquest IP</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="Lloc"> <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="Contingut" 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">Contingut</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">amaga</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">Inici</div> </a> </li> <li id="toc-Història_de_l'observació_del_cel" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Història_de_l'observació_del_cel"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Història de l'observació del cel</span> </div> </a> <ul id="toc-Història_de_l'observació_del_cel-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Colors" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Colors"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>Colors</span> </div> </a> <button aria-controls="toc-Colors-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Commuta la subsecció Colors</span> </button> <ul id="toc-Colors-sublist" class="vector-toc-list"> <li id="toc-Durant_el_dia" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Durant_el_dia"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Durant el dia</span> </div> </a> <ul id="toc-Durant_el_dia-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Posta_de_sol" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Posta_de_sol"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Posta de sol</span> </div> </a> <ul id="toc-Posta_de_sol-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Nit" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Nit"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.3</span> <span>Nit</span> </div> </a> <ul id="toc-Nit-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Altres_casos" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Altres_casos"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.4</span> <span>Altres casos</span> </div> </a> <ul id="toc-Altres_casos-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Referències" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Referències"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Referències</span> </div> </a> <ul id="toc-Referències-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Vegeu_també" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Vegeu_també"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Vegeu també</span> </div> </a> <ul id="toc-Vegeu_també-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="Contingut" 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="Commuta la taula de continguts." > <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">Commuta la taula de continguts.</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">Cel</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="Vés a un article en una altra llengua. Disponible en 142 llengües" > <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-142" 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">142 llengües</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ady mw-list-item"><a href="https://ady.wikipedia.org/wiki/%D0%9E%D1%88%D1%8A%D1%83%D0%B0%D0%BF%D1%89%D1%8D" title="Ошъуапщэ - adigué" lang="ady" hreflang="ady" data-title="Ошъуапщэ" data-language-autonym="Адыгабзэ" data-language-local-name="adigué" class="interlanguage-link-target"><span>Адыгабзэ</span></a></li><li class="interlanguage-link interwiki-alt mw-list-item"><a href="https://alt.wikipedia.org/wiki/%D0%A2%D0%B5%D2%A5%D0%B5%D1%80%D0%B8" title="Теҥери - altaic meridional" lang="alt" hreflang="alt" data-title="Теҥери" data-language-autonym="Алтай тил" data-language-local-name="altaic meridional" class="interlanguage-link-target"><span>Алтай тил</span></a></li><li class="interlanguage-link interwiki-am mw-list-item"><a href="https://am.wikipedia.org/wiki/%E1%88%B0%E1%88%9B%E1%8B%AD" title="ሰማይ - amhàric" lang="am" hreflang="am" data-title="ሰማይ" data-language-autonym="አማርኛ" data-language-local-name="amhàric" class="interlanguage-link-target"><span>አማርኛ</span></a></li><li class="interlanguage-link interwiki-ang mw-list-item"><a href="https://ang.wikipedia.org/wiki/Sky" title="Sky - anglès antic" lang="ang" hreflang="ang" data-title="Sky" data-language-autonym="Ænglisc" data-language-local-name="anglès antic" 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%85%D8%A7%D8%A1" title="سماء - àrab" lang="ar" hreflang="ar" data-title="سماء" data-language-autonym="العربية" data-language-local-name="àrab" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-arz mw-list-item"><a href="https://arz.wikipedia.org/wiki/%D8%B3%D9%85%D8%A7_(%D9%81%D9%84%D9%83)" title="سما (فلك) - àrab egipci" lang="arz" hreflang="arz" data-title="سما (فلك)" data-language-autonym="مصرى" data-language-local-name="àrab egipci" class="interlanguage-link-target"><span>مصرى</span></a></li><li class="interlanguage-link interwiki-ast mw-list-item"><a href="https://ast.wikipedia.org/wiki/Cielu" title="Cielu - asturià" lang="ast" hreflang="ast" data-title="Cielu" data-language-autonym="Asturianu" data-language-local-name="asturià" class="interlanguage-link-target"><span>Asturianu</span></a></li><li class="interlanguage-link interwiki-av mw-list-item"><a href="https://av.wikipedia.org/wiki/%D0%97%D0%BE%D0%B1" title="Зоб - àvar" lang="av" hreflang="av" data-title="Зоб" data-language-autonym="Авар" data-language-local-name="àvar" class="interlanguage-link-target"><span>Авар</span></a></li><li class="interlanguage-link interwiki-awa mw-list-item"><a href="https://awa.wikipedia.org/wiki/%E0%A4%86%E0%A4%B8%E0%A4%AE%E0%A4%BE%E0%A4%A8" title="आसमान - awadhi" lang="awa" hreflang="awa" data-title="आसमान" data-language-autonym="अवधी" data-language-local-name="awadhi" class="interlanguage-link-target"><span>अवधी</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/S%C9%99ma" title="Səma - azerbaidjanès" lang="az" hreflang="az" data-title="Səma" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaidjanès" 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/%DA%AF%D8%A4%DB%8C" title="گؤی - South Azerbaijani" lang="azb" hreflang="azb" data-title="گؤی" data-language-autonym="تۆرکجه" data-language-local-name="South Azerbaijani" class="interlanguage-link-target"><span>تۆرکجه</span></a></li><li class="interlanguage-link interwiki-bat-smg mw-list-item"><a href="https://bat-smg.wikipedia.org/wiki/Dongos" title="Dongos - Samogitian" lang="sgs" hreflang="sgs" data-title="Dongos" data-language-autonym="Žemaitėška" data-language-local-name="Samogitian" class="interlanguage-link-target"><span>Žemaitėška</span></a></li><li class="interlanguage-link interwiki-be mw-list-item"><a href="https://be.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B1%D0%B0" title="Неба - belarús" lang="be" hreflang="be" data-title="Неба" data-language-autonym="Беларуская" data-language-local-name="belarús" class="interlanguage-link-target"><span>Беларуская</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B1%D0%B5" title="Небе - búlgar" lang="bg" hreflang="bg" data-title="Небе" data-language-autonym="Български" data-language-local-name="búlgar" 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%86%E0%A4%B8%E0%A4%AE%E0%A4%BE%E0%A4%A8" title="आसमान - Bhojpuri" lang="bh" hreflang="bh" data-title="आसमान" 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%95%E0%A6%BE%E0%A6%B6" title="আকাশ - bengalí" lang="bn" hreflang="bn" data-title="আকাশ" data-language-autonym="বাংলা" data-language-local-name="bengalí" 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/Oabl" title="Oabl - bretó" lang="br" hreflang="br" data-title="Oabl" data-language-autonym="Brezhoneg" data-language-local-name="bretó" 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/Nebo" title="Nebo - bosnià" lang="bs" hreflang="bs" data-title="Nebo" data-language-autonym="Bosanski" data-language-local-name="bosnià" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-bxr mw-list-item"><a href="https://bxr.wikipedia.org/wiki/%D0%A2%D1%8D%D0%BD%D0%B3%D1%8D%D1%80%D0%B8" title="Тэнгэри - Russia Buriat" lang="bxr" hreflang="bxr" data-title="Тэнгэри" data-language-autonym="Буряад" data-language-local-name="Russia Buriat" class="interlanguage-link-target"><span>Буряад</span></a></li><li class="interlanguage-link interwiki-ce mw-list-item"><a href="https://ce.wikipedia.org/wiki/%D0%A1%D1%82%D0%B8%D0%B3%D0%B0%D0%BB" title="Стигал - txetxè" lang="ce" hreflang="ce" data-title="Стигал" data-language-autonym="Нохчийн" data-language-local-name="txetxè" class="interlanguage-link-target"><span>Нохчийн</span></a></li><li class="interlanguage-link interwiki-chr mw-list-item"><a href="https://chr.wikipedia.org/wiki/%E1%8E%A6%E1%8E%B7%E1%8E%BE%E1%8F%97" title="ᎦᎷᎾᏗ - cherokee" lang="chr" hreflang="chr" data-title="ᎦᎷᎾᏗ" data-language-autonym="ᏣᎳᎩ" data-language-local-name="cherokee" class="interlanguage-link-target"><span>ᏣᎳᎩ</span></a></li><li class="interlanguage-link interwiki-ckb mw-list-item"><a href="https://ckb.wikipedia.org/wiki/%D8%A6%D8%A7%D8%B3%D9%85%D8%A7%D9%86" title="ئاسمان - kurd central" lang="ckb" hreflang="ckb" data-title="ئاسمان" data-language-autonym="کوردی" data-language-local-name="kurd central" class="interlanguage-link-target"><span>کوردی</span></a></li><li class="interlanguage-link interwiki-co mw-list-item"><a href="https://co.wikipedia.org/wiki/Cele" title="Cele - cors" lang="co" hreflang="co" data-title="Cele" data-language-autonym="Corsu" data-language-local-name="cors" class="interlanguage-link-target"><span>Corsu</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Obloha" title="Obloha - txec" lang="cs" hreflang="cs" data-title="Obloha" data-language-autonym="Čeština" data-language-local-name="txec" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%A2%D3%B3%D0%BF%D0%B5" title="Тӳпе - txuvaix" lang="cv" hreflang="cv" data-title="Тӳпе" data-language-autonym="Чӑвашла" data-language-local-name="txuvaix" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Himmel" title="Himmel - danès" lang="da" hreflang="da" data-title="Himmel" data-language-autonym="Dansk" data-language-local-name="danès" 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/Himmel_(planetar)" title="Himmel (planetar) - alemany" lang="de" hreflang="de" data-title="Himmel (planetar)" data-language-autonym="Deutsch" data-language-local-name="alemany" 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/Asm%C3%AAn" title="Asmên - Zazaki" lang="diq" hreflang="diq" data-title="Asmên" data-language-autonym="Zazaki" data-language-local-name="Zazaki" class="interlanguage-link-target"><span>Zazaki</span></a></li><li class="interlanguage-link interwiki-dty mw-list-item"><a href="https://dty.wikipedia.org/wiki/%E0%A4%86%E0%A4%95%E0%A4%BE%E0%A4%B6" title="आकाश - Doteli" lang="dty" hreflang="dty" data-title="आकाश" data-language-autonym="डोटेली" data-language-local-name="Doteli" class="interlanguage-link-target"><span>डोटेली</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%9F%CF%85%CF%81%CE%B1%CE%BD%CF%8C%CF%82" title="Ουρανός - grec" lang="el" hreflang="el" data-title="Ουρανός" data-language-autonym="Ελληνικά" data-language-local-name="grec" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Sky" title="Sky - anglès" lang="en" hreflang="en" data-title="Sky" data-language-autonym="English" data-language-local-name="anglès" 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/%C4%88ielo" title="Ĉielo - esperanto" lang="eo" hreflang="eo" data-title="Ĉielo" 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/Cielo" title="Cielo - espanyol" lang="es" hreflang="es" data-title="Cielo" data-language-autonym="Español" data-language-local-name="espanyol" 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/Taevas" title="Taevas - estonià" lang="et" hreflang="et" data-title="Taevas" data-language-autonym="Eesti" data-language-local-name="estonià" 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/Zeru" title="Zeru - basc" lang="eu" hreflang="eu" data-title="Zeru" data-language-autonym="Euskara" data-language-local-name="basc" 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/Cielu" title="Cielu - extremeny" lang="ext" hreflang="ext" data-title="Cielu" data-language-autonym="Estremeñu" data-language-local-name="extremeny" 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%A2%D8%B3%D9%85%D8%A7%D9%86" title="آسمان - persa" lang="fa" hreflang="fa" data-title="آسمان" data-language-autonym="فارسی" data-language-local-name="persa" 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/Taivas" title="Taivas - finès" lang="fi" hreflang="fi" data-title="Taivas" data-language-autonym="Suomi" data-language-local-name="finès" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fj mw-list-item"><a href="https://fj.wikipedia.org/wiki/Lomalagi" title="Lomalagi - fijià" lang="fj" hreflang="fj" data-title="Lomalagi" data-language-autonym="Na Vosa Vakaviti" data-language-local-name="fijià" class="interlanguage-link-target"><span>Na Vosa Vakaviti</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Ciel" title="Ciel - francès" lang="fr" hreflang="fr" data-title="Ciel" data-language-autonym="Français" data-language-local-name="francès" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-fy mw-list-item"><a href="https://fy.wikipedia.org/wiki/Loft" title="Loft - frisó occidental" lang="fy" hreflang="fy" data-title="Loft" data-language-autonym="Frysk" data-language-local-name="frisó occidental" 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/Sp%C3%A9ir" title="Spéir - irlandès" lang="ga" hreflang="ga" data-title="Spéir" data-language-autonym="Gaeilge" data-language-local-name="irlandès" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gd mw-list-item"><a href="https://gd.wikipedia.org/wiki/Adhar" title="Adhar - gaèlic escocès" lang="gd" hreflang="gd" data-title="Adhar" data-language-autonym="Gàidhlig" data-language-local-name="gaèlic escocès" class="interlanguage-link-target"><span>Gàidhlig</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Ceo" title="Ceo - gallec" lang="gl" hreflang="gl" data-title="Ceo" data-language-autonym="Galego" data-language-local-name="gallec" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-gn mw-list-item"><a href="https://gn.wikipedia.org/wiki/Yv%C3%A1ga" title="Yvága - guaraní" lang="gn" hreflang="gn" data-title="Yvága" data-language-autonym="Avañe'ẽ" data-language-local-name="guaraní" class="interlanguage-link-target"><span>Avañe'ẽ</span></a></li><li class="interlanguage-link interwiki-guc mw-list-item"><a href="https://guc.wikipedia.org/wiki/Siruma" title="Siruma - wayú" lang="guc" hreflang="guc" data-title="Siruma" data-language-autonym="Wayuunaiki" data-language-local-name="wayú" class="interlanguage-link-target"><span>Wayuunaiki</span></a></li><li class="interlanguage-link interwiki-ha mw-list-item"><a href="https://ha.wikipedia.org/wiki/Sama" title="Sama - haussa" lang="ha" hreflang="ha" data-title="Sama" data-language-autonym="Hausa" data-language-local-name="haussa" class="interlanguage-link-target"><span>Hausa</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A9%D7%9E%D7%99%D7%99%D7%9D" title="שמיים - hebreu" lang="he" hreflang="he" data-title="שמיים" data-language-autonym="עברית" data-language-local-name="hebreu" 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%86%E0%A4%95%E0%A4%BE%E0%A4%B6" title="आकाश - hindi" lang="hi" hreflang="hi" data-title="आकाश" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hr mw-list-item"><a href="https://hr.wikipedia.org/wiki/Nebo" title="Nebo - croat" lang="hr" hreflang="hr" data-title="Nebo" data-language-autonym="Hrvatski" data-language-local-name="croat" 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/Sy%C3%A8l" title="Syèl - crioll d’Haití" lang="ht" hreflang="ht" data-title="Syèl" data-language-autonym="Kreyòl ayisyen" data-language-local-name="crioll d’Haití" 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/%C3%89g" title="Ég - hongarès" lang="hu" hreflang="hu" data-title="Ég" data-language-autonym="Magyar" data-language-local-name="hongarès" 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%B5%D6%80%D5%AF%D5%AB%D5%B6%D6%84" title="Երկինք - armeni" lang="hy" hreflang="hy" data-title="Երկինք" data-language-autonym="Հայերեն" data-language-local-name="armeni" 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/Celo" title="Celo - interlingua" lang="ia" hreflang="ia" data-title="Celo" data-language-autonym="Interlingua" data-language-local-name="interlingua" class="interlanguage-link-target"><span>Interlingua</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Langit" title="Langit - indonesi" lang="id" hreflang="id" data-title="Langit" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesi" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-inh mw-list-item"><a href="https://inh.wikipedia.org/wiki/%D0%A1%D0%B8%D0%B3%D0%B0%D0%BB%D0%B5" title="Сигале - ingúix" lang="inh" hreflang="inh" data-title="Сигале" data-language-autonym="ГӀалгӀай" data-language-local-name="ingúix" class="interlanguage-link-target"><span>ГӀалгӀай</span></a></li><li class="interlanguage-link interwiki-io mw-list-item"><a href="https://io.wikipedia.org/wiki/Cielo" title="Cielo - ido" lang="io" hreflang="io" data-title="Cielo" 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/Himinn" title="Himinn - islandès" lang="is" hreflang="is" data-title="Himinn" data-language-autonym="Íslenska" data-language-local-name="islandès" 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/Cielo" title="Cielo - italià" lang="it" hreflang="it" data-title="Cielo" data-language-autonym="Italiano" data-language-local-name="italià" 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/%E7%A9%BA" title="空 - japonès" lang="ja" hreflang="ja" data-title="空" data-language-autonym="日本語" data-language-local-name="japonès" 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/Langit" title="Langit - javanès" lang="jv" hreflang="jv" data-title="Langit" data-language-autonym="Jawa" data-language-local-name="javanès" 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%AA%E1%83%90" title="ცა - georgià" lang="ka" hreflang="ka" data-title="ცა" data-language-autonym="ქართული" data-language-local-name="georgià" 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/Igenni" title="Igenni - cabilenc" lang="kab" hreflang="kab" data-title="Igenni" data-language-autonym="Taqbaylit" data-language-local-name="cabilenc" class="interlanguage-link-target"><span>Taqbaylit</span></a></li><li class="interlanguage-link interwiki-kcg mw-list-item"><a href="https://kcg.wikipedia.org/wiki/Kyai_tswazwa" title="Kyai tswazwa - tyap" lang="kcg" hreflang="kcg" data-title="Kyai tswazwa" data-language-autonym="Tyap" data-language-local-name="tyap" class="interlanguage-link-target"><span>Tyap</span></a></li><li class="interlanguage-link interwiki-kk mw-list-item"><a href="https://kk.wikipedia.org/wiki/%D0%90%D1%81%D0%BF%D0%B0%D0%BD" title="Аспан - kazakh" lang="kk" hreflang="kk" data-title="Аспан" data-language-autonym="Қазақша" data-language-local-name="kazakh" class="interlanguage-link-target"><span>Қазақша</span></a></li><li class="interlanguage-link interwiki-kn mw-list-item"><a href="https://kn.wikipedia.org/wiki/%E0%B2%86%E0%B2%95%E0%B2%BE%E0%B2%B6" title="ಆಕಾಶ - kannada" lang="kn" hreflang="kn" data-title="ಆಕಾಶ" 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/%ED%95%98%EB%8A%98" title="하늘 - coreà" lang="ko" hreflang="ko" data-title="하늘" data-language-autonym="한국어" data-language-local-name="coreà" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-ks mw-list-item"><a href="https://ks.wikipedia.org/wiki/%D9%86%D9%8E%D8%A8" title="نَب - caixmiri" lang="ks" hreflang="ks" data-title="نَب" data-language-autonym="कॉशुर / کٲشُر" data-language-local-name="caixmiri" class="interlanguage-link-target"><span>कॉशुर / کٲشُر</span></a></li><li class="interlanguage-link interwiki-ku mw-list-item"><a href="https://ku.wikipedia.org/wiki/Esman" title="Esman - kurd" lang="ku" hreflang="ku" data-title="Esman" data-language-autonym="Kurdî" data-language-local-name="kurd" class="interlanguage-link-target"><span>Kurdî</span></a></li><li class="interlanguage-link interwiki-la mw-list-item"><a href="https://la.wikipedia.org/wiki/Caelum" title="Caelum - llatí" lang="la" hreflang="la" data-title="Caelum" data-language-autonym="Latina" data-language-local-name="llatí" 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/Himmel_(Astronomie)" title="Himmel (Astronomie) - luxemburguès" lang="lb" hreflang="lb" data-title="Himmel (Astronomie)" data-language-autonym="Lëtzebuergesch" data-language-local-name="luxemburguès" class="interlanguage-link-target"><span>Lëtzebuergesch</span></a></li><li class="interlanguage-link interwiki-lmo mw-list-item"><a href="https://lmo.wikipedia.org/wiki/Ciel" title="Ciel - llombard" lang="lmo" hreflang="lmo" data-title="Ciel" data-language-autonym="Lombard" data-language-local-name="llombard" class="interlanguage-link-target"><span>Lombard</span></a></li><li class="interlanguage-link interwiki-ln mw-list-item"><a href="https://ln.wikipedia.org/wiki/L%C3%B3la" title="Lóla - lingala" lang="ln" hreflang="ln" data-title="Lóla" data-language-autonym="Lingála" data-language-local-name="lingala" class="interlanguage-link-target"><span>Lingála</span></a></li><li class="interlanguage-link interwiki-lt mw-list-item"><a href="https://lt.wikipedia.org/wiki/Dangus" title="Dangus - lituà" lang="lt" hreflang="lt" data-title="Dangus" data-language-autonym="Lietuvių" data-language-local-name="lituà" 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/Debesis" title="Debesis - letó" lang="lv" hreflang="lv" data-title="Debesis" data-language-autonym="Latviešu" data-language-local-name="letó" class="interlanguage-link-target"><span>Latviešu</span></a></li><li class="interlanguage-link interwiki-mdf mw-list-item"><a href="https://mdf.wikipedia.org/wiki/%D0%9C%D0%B5%D0%BD%D0%B5%D0%BB%D1%81%D1%8C" title="Менелсь - mordovià moksa" lang="mdf" hreflang="mdf" data-title="Менелсь" data-language-autonym="Мокшень" data-language-local-name="mordovià moksa" class="interlanguage-link-target"><span>Мокшень</span></a></li><li class="interlanguage-link interwiki-mi mw-list-item"><a href="https://mi.wikipedia.org/wiki/Rangi" title="Rangi - maori" lang="mi" hreflang="mi" data-title="Rangi" data-language-autonym="Māori" data-language-local-name="maori" class="interlanguage-link-target"><span>Māori</span></a></li><li class="interlanguage-link interwiki-mk mw-list-item"><a href="https://mk.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B1%D0%BE" title="Небо - macedoni" lang="mk" hreflang="mk" data-title="Небо" data-language-autonym="Македонски" data-language-local-name="macedoni" 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%86%E0%B4%95%E0%B4%BE%E0%B4%B6%E0%B4%82" title="ആകാശം - malaiàlam" lang="ml" hreflang="ml" data-title="ആകാശം" data-language-autonym="മലയാളം" data-language-local-name="malaiàlam" class="interlanguage-link-target"><span>മലയാളം</span></a></li><li class="interlanguage-link interwiki-mr mw-list-item"><a href="https://mr.wikipedia.org/wiki/%E0%A4%86%E0%A4%95%E0%A4%BE%E0%A4%B6" title="आकाश - marathi" lang="mr" hreflang="mr" data-title="आकाश" data-language-autonym="मराठी" data-language-local-name="marathi" class="interlanguage-link-target"><span>मराठी</span></a></li><li class="interlanguage-link interwiki-mrj mw-list-item"><a href="https://mrj.wikipedia.org/wiki/%D0%9F%D3%B9%D0%BB%D0%B3%D0%BE%D0%BC" title="Пӹлгом - mari occidental" lang="mrj" hreflang="mrj" data-title="Пӹлгом" data-language-autonym="Кырык мары" data-language-local-name="mari occidental" class="interlanguage-link-target"><span>Кырык мары</span></a></li><li class="interlanguage-link interwiki-ms mw-list-item"><a href="https://ms.wikipedia.org/wiki/Langit" title="Langit - malai" lang="ms" hreflang="ms" data-title="Langit" data-language-autonym="Bahasa Melayu" data-language-local-name="malai" class="interlanguage-link-target"><span>Bahasa Melayu</span></a></li><li class="interlanguage-link interwiki-mwl mw-list-item"><a href="https://mwl.wikipedia.org/wiki/Cielo" title="Cielo - mirandès" lang="mwl" hreflang="mwl" data-title="Cielo" data-language-autonym="Mirandés" data-language-local-name="mirandès" class="interlanguage-link-target"><span>Mirandés</span></a></li><li class="interlanguage-link interwiki-my mw-list-item"><a href="https://my.wikipedia.org/wiki/%E1%80%80%E1%80%B1%E1%80%AC%E1%80%84%E1%80%BA%E1%80%B8%E1%80%80%E1%80%84%E1%80%BA" title="ကောင်းကင် - birmà" lang="my" hreflang="my" data-title="ကောင်းကင်" data-language-autonym="မြန်မာဘာသာ" data-language-local-name="birmà" 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/Ilhuicatl" title="Ilhuicatl - Nahuatl" lang="nah" hreflang="nah" data-title="Ilhuicatl" data-language-autonym="Nāhuatl" data-language-local-name="Nahuatl" class="interlanguage-link-target"><span>Nāhuatl</span></a></li><li class="interlanguage-link interwiki-ne mw-list-item"><a href="https://ne.wikipedia.org/wiki/%E0%A4%86%E0%A4%95%E0%A4%BE%E0%A4%B6" title="आकाश - nepalès" lang="ne" hreflang="ne" data-title="आकाश" data-language-autonym="नेपाली" data-language-local-name="nepalès" class="interlanguage-link-target"><span>नेपाली</span></a></li><li class="interlanguage-link interwiki-new mw-list-item"><a href="https://new.wikipedia.org/wiki/%E0%A4%B8%E0%A4%B0%E0%A5%8D%E0%A4%97%E0%A4%83" title="सर्गः - newari" lang="new" hreflang="new" data-title="सर्गः" data-language-autonym="नेपाल भाषा" data-language-local-name="newari" class="interlanguage-link-target"><span>नेपाल भाषा</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Hemelgewelf" title="Hemelgewelf - neerlandès" lang="nl" hreflang="nl" data-title="Hemelgewelf" data-language-autonym="Nederlands" data-language-local-name="neerlandès" 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/Himmel" title="Himmel - noruec nynorsk" lang="nn" hreflang="nn" data-title="Himmel" data-language-autonym="Norsk nynorsk" data-language-local-name="noruec nynorsk" class="interlanguage-link-target"><span>Norsk nynorsk</span></a></li><li class="interlanguage-link interwiki-nrm mw-list-item"><a href="https://nrm.wikipedia.org/wiki/Cyil" title="Cyil - Norman" lang="nrf" hreflang="nrf" data-title="Cyil" data-language-autonym="Nouormand" data-language-local-name="Norman" class="interlanguage-link-target"><span>Nouormand</span></a></li><li class="interlanguage-link interwiki-oc mw-list-item"><a href="https://oc.wikipedia.org/wiki/C%C3%A8u" title="Cèu - occità" lang="oc" hreflang="oc" data-title="Cèu" data-language-autonym="Occitan" data-language-local-name="occità" class="interlanguage-link-target"><span>Occitan</span></a></li><li class="interlanguage-link interwiki-pa mw-list-item"><a href="https://pa.wikipedia.org/wiki/%E0%A8%85%E0%A8%95%E0%A8%BE%E0%A8%B8%E0%A8%BC" title="ਅਕਾਸ਼ - panjabi" lang="pa" hreflang="pa" data-title="ਅਕਾਸ਼" data-language-autonym="ਪੰਜਾਬੀ" data-language-local-name="panjabi" class="interlanguage-link-target"><span>ਪੰਜਾਬੀ</span></a></li><li class="interlanguage-link interwiki-pi mw-list-item"><a href="https://pi.wikipedia.org/wiki/%E0%A4%86%E0%A4%95%E0%A4%BE%E0%A4%B8%E0%A5%8B" title="आकासो - pali" lang="pi" hreflang="pi" data-title="आकासो" data-language-autonym="पालि" data-language-local-name="pali" class="interlanguage-link-target"><span>पालि</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Niebo" title="Niebo - polonès" lang="pl" hreflang="pl" data-title="Niebo" data-language-autonym="Polski" data-language-local-name="polonès" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pnb mw-list-item"><a href="https://pnb.wikipedia.org/wiki/%D8%A2%D8%B3%D9%85%D8%A7%D9%86" title="آسمان - Western Punjabi" lang="pnb" hreflang="pnb" data-title="آسمان" 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/%D8%A2%D8%B3%D9%85%D8%A7%D9%86" title="آسمان - paixtu" lang="ps" hreflang="ps" data-title="آسمان" data-language-autonym="پښتو" data-language-local-name="paixtu" 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/C%C3%A9u" title="Céu - portuguès" lang="pt" hreflang="pt" data-title="Céu" data-language-autonym="Português" data-language-local-name="portuguès" 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/Hanaq_pacha" title="Hanaq pacha - quítxua" lang="qu" hreflang="qu" data-title="Hanaq pacha" data-language-autonym="Runa Simi" data-language-local-name="quítxua" class="interlanguage-link-target"><span>Runa Simi</span></a></li><li class="interlanguage-link interwiki-rmy mw-list-item"><a href="https://rmy.wikipedia.org/wiki/Bollepen" title="Bollepen - Vlax Romani" lang="rmy" hreflang="rmy" data-title="Bollepen" data-language-autonym="Romani čhib" data-language-local-name="Vlax Romani" class="interlanguage-link-target"><span>Romani čhib</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Cer_(planetar)" title="Cer (planetar) - romanès" lang="ro" hreflang="ro" data-title="Cer (planetar)" data-language-autonym="Română" data-language-local-name="romanès" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-roa-rup mw-list-item"><a href="https://roa-rup.wikipedia.org/wiki/%C8%9Aeru" title="Țeru - aromanès" lang="rup" hreflang="rup" data-title="Țeru" data-language-autonym="Armãneashti" data-language-local-name="aromanès" class="interlanguage-link-target"><span>Armãneashti</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B1%D0%BE" title="Небо - rus" lang="ru" hreflang="ru" data-title="Небо" data-language-autonym="Русский" data-language-local-name="rus" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sat mw-list-item"><a href="https://sat.wikipedia.org/wiki/%E1%B1%A5%E1%B1%AE%E1%B1%A8%E1%B1%A2%E1%B1%9F" title="ᱥᱮᱨᱢᱟ - santali" lang="sat" hreflang="sat" data-title="ᱥᱮᱨᱢᱟ" data-language-autonym="ᱥᱟᱱᱛᱟᱲᱤ" data-language-local-name="santali" class="interlanguage-link-target"><span>ᱥᱟᱱᱛᱟᱲᱤ</span></a></li><li class="interlanguage-link interwiki-scn mw-list-item"><a href="https://scn.wikipedia.org/wiki/Celu" title="Celu - sicilià" lang="scn" hreflang="scn" data-title="Celu" data-language-autonym="Sicilianu" data-language-local-name="sicilià" 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/Lift" title="Lift - escocès" lang="sco" hreflang="sco" data-title="Lift" data-language-autonym="Scots" data-language-local-name="escocès" 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/%D8%A2%D8%B3%D9%85%D8%A7%D9%86" title="آسمان - sindi" lang="sd" hreflang="sd" data-title="آسمان" data-language-autonym="سنڌي" data-language-local-name="sindi" 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/Nebo" title="Nebo - serbocroat" lang="sh" hreflang="sh" data-title="Nebo" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="serbocroat" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-shi mw-list-item"><a href="https://shi.wikipedia.org/wiki/Ignwan" title="Ignwan - taixelhit" lang="shi" hreflang="shi" data-title="Ignwan" data-language-autonym="Taclḥit" data-language-local-name="taixelhit" class="interlanguage-link-target"><span>Taclḥit</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Sky" title="Sky - Simple English" lang="en-simple" hreflang="en-simple" data-title="Sky" 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/Obloha" title="Obloha - eslovac" lang="sk" hreflang="sk" data-title="Obloha" data-language-autonym="Slovenčina" data-language-local-name="eslovac" 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/Nebo" title="Nebo - eslovè" lang="sl" hreflang="sl" data-title="Nebo" data-language-autonym="Slovenščina" data-language-local-name="eslovè" 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/Cir" title="Cir - somali" lang="so" hreflang="so" data-title="Cir" data-language-autonym="Soomaaliga" data-language-local-name="somali" 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/Qielli" title="Qielli - albanès" lang="sq" hreflang="sq" data-title="Qielli" data-language-autonym="Shqip" data-language-local-name="albanès" 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%9D%D0%B5%D0%B1%D0%BE" title="Небо - serbi" lang="sr" hreflang="sr" data-title="Небо" data-language-autonym="Српски / srpski" data-language-local-name="serbi" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-su mw-list-item"><a href="https://su.wikipedia.org/wiki/Langit" title="Langit - sondanès" lang="su" hreflang="su" data-title="Langit" data-language-autonym="Sunda" data-language-local-name="sondanès" class="interlanguage-link-target"><span>Sunda</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Himmel" title="Himmel - suec" lang="sv" hreflang="sv" data-title="Himmel" data-language-autonym="Svenska" data-language-local-name="suec" 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/Anga" title="Anga - suahili" lang="sw" hreflang="sw" data-title="Anga" data-language-autonym="Kiswahili" data-language-local-name="suahili" 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%B5%E0%AE%BE%E0%AE%A9%E0%AE%AE%E0%AF%8D" title="வானம் - tàmil" lang="ta" hreflang="ta" data-title="வானம்" data-language-autonym="தமிழ்" data-language-local-name="tàmil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-tcy mw-list-item"><a href="https://tcy.wikipedia.org/wiki/%E0%B2%86%E0%B2%95%E0%B2%BE%E0%B2%B8%E0%B3%8A" title="ಆಕಾಸೊ - Tulu" lang="tcy" hreflang="tcy" data-title="ಆಕಾಸೊ" data-language-autonym="ತುಳು" data-language-local-name="Tulu" class="interlanguage-link-target"><span>ತುಳು</span></a></li><li class="interlanguage-link interwiki-te mw-list-item"><a href="https://te.wikipedia.org/wiki/%E0%B0%86%E0%B0%95%E0%B0%BE%E0%B0%B6%E0%B0%82" title="ఆకాశం - telugu" lang="te" hreflang="te" data-title="ఆకాశం" data-language-autonym="తెలుగు" data-language-local-name="telugu" class="interlanguage-link-target"><span>తెలుగు</span></a></li><li class="interlanguage-link interwiki-tg mw-list-item"><a href="https://tg.wikipedia.org/wiki/%D0%9E%D1%81%D0%BC%D0%BE%D0%BD" title="Осмон - tadjik" lang="tg" hreflang="tg" data-title="Осмон" data-language-autonym="Тоҷикӣ" data-language-local-name="tadjik" class="interlanguage-link-target"><span>Тоҷикӣ</span></a></li><li class="interlanguage-link interwiki-th mw-list-item"><a href="https://th.wikipedia.org/wiki/%E0%B8%97%E0%B9%89%E0%B8%AD%E0%B8%87%E0%B8%9F%E0%B9%89%E0%B8%B2" title="ท้องฟ้า - tai" lang="th" hreflang="th" data-title="ท้องฟ้า" data-language-autonym="ไทย" data-language-local-name="tai" class="interlanguage-link-target"><span>ไทย</span></a></li><li class="interlanguage-link interwiki-tl mw-list-item"><a href="https://tl.wikipedia.org/wiki/Langit_(meteorolohiya)" title="Langit (meteorolohiya) - tagal" lang="tl" hreflang="tl" data-title="Langit (meteorolohiya)" data-language-autonym="Tagalog" data-language-local-name="tagal" 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/G%C3%B6ky%C3%BCz%C3%BC" title="Gökyüzü - turc" lang="tr" hreflang="tr" data-title="Gökyüzü" data-language-autonym="Türkçe" data-language-local-name="turc" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-trv mw-list-item"><a href="https://trv.wikipedia.org/wiki/Karac" title="Karac - taroko" lang="trv" hreflang="trv" data-title="Karac" data-language-autonym="Seediq" data-language-local-name="taroko" class="interlanguage-link-target"><span>Seediq</span></a></li><li class="interlanguage-link interwiki-tt mw-list-item"><a href="https://tt.wikipedia.org/wiki/%D0%9A%D2%AF%D0%BA" title="Күк - tàtar" lang="tt" hreflang="tt" data-title="Күк" data-language-autonym="Татарча / tatarça" data-language-local-name="tàtar" class="interlanguage-link-target"><span>Татарча / tatarça</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9D%D0%B5%D0%B1%D0%BE" title="Небо - ucraïnès" lang="uk" hreflang="uk" data-title="Небо" data-language-autonym="Українська" data-language-local-name="ucraïnès" 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/%D8%A2%D8%B3%D9%85%D8%A7%D9%86" title="آسمان - urdú" lang="ur" hreflang="ur" data-title="آسمان" data-language-autonym="اردو" data-language-local-name="urdú" 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/Osmon" title="Osmon - uzbek" lang="uz" hreflang="uz" data-title="Osmon" 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-vep mw-list-item"><a href="https://vep.wikipedia.org/wiki/Taivaz" title="Taivaz - vepse" lang="vep" hreflang="vep" data-title="Taivaz" data-language-autonym="Vepsän kel’" data-language-local-name="vepse" class="interlanguage-link-target"><span>Vepsän kel’</span></a></li><li class="interlanguage-link interwiki-vi mw-list-item"><a href="https://vi.wikipedia.org/wiki/B%E1%BA%A7u_tr%E1%BB%9Di" title="Bầu trời - vietnamita" lang="vi" hreflang="vi" data-title="Bầu trời" data-language-autonym="Tiếng Việt" data-language-local-name="vietnamita" 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/Sil" title="Sil - volapük" lang="vo" hreflang="vo" data-title="Sil" data-language-autonym="Volapük" data-language-local-name="volapük" 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/Langit_(astronomiya)" title="Langit (astronomiya) - waray" lang="war" hreflang="war" data-title="Langit (astronomiya)" data-language-autonym="Winaray" data-language-local-name="waray" class="interlanguage-link-target"><span>Winaray</span></a></li><li class="interlanguage-link interwiki-wo mw-list-item"><a href="https://wo.wikipedia.org/wiki/Asamaan" title="Asamaan - wòlof" lang="wo" hreflang="wo" data-title="Asamaan" data-language-autonym="Wolof" data-language-local-name="wòlof" class="interlanguage-link-target"><span>Wolof</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a href="https://wuu.wikipedia.org/wiki/%E5%A4%A9%E7%A9%BA" title="天空 - xinès wu" lang="wuu" hreflang="wuu" data-title="天空" data-language-autonym="吴语" data-language-local-name="xinès wu" class="interlanguage-link-target"><span>吴语</span></a></li><li class="interlanguage-link interwiki-xh mw-list-item"><a href="https://xh.wikipedia.org/wiki/Isibhakabhaka" title="Isibhakabhaka - xosa" lang="xh" hreflang="xh" data-title="Isibhakabhaka" data-language-autonym="IsiXhosa" data-language-local-name="xosa" class="interlanguage-link-target"><span>IsiXhosa</span></a></li><li class="interlanguage-link interwiki-xmf mw-list-item"><a href="https://xmf.wikipedia.org/wiki/%E1%83%AA%E1%83%90" title="ცა - mingrelià" lang="xmf" hreflang="xmf" data-title="ცა" data-language-autonym="მარგალური" data-language-local-name="mingrelià" class="interlanguage-link-target"><span>მარგალური</span></a></li><li class="interlanguage-link interwiki-yi mw-list-item"><a href="https://yi.wikipedia.org/wiki/%D7%94%D7%99%D7%9E%D7%9C" title="הימל - ídix" lang="yi" hreflang="yi" data-title="הימל" data-language-autonym="ייִדיש" data-language-local-name="ídix" class="interlanguage-link-target"><span>ייִדיש</span></a></li><li class="interlanguage-link interwiki-za mw-list-item"><a href="https://za.wikipedia.org/wiki/Mbwn" title="Mbwn - zhuang" lang="za" hreflang="za" data-title="Mbwn" data-language-autonym="Vahcuengh" data-language-local-name="zhuang" class="interlanguage-link-target"><span>Vahcuengh</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E5%A4%A9%E7%A9%BA" title="天空 - xinès" lang="zh" hreflang="zh" data-title="天空" data-language-autonym="中文" data-language-local-name="xinès" class="interlanguage-link-target"><span>中文</span></a></li><li class="interlanguage-link interwiki-zh-min-nan mw-list-item"><a href="https://zh-min-nan.wikipedia.org/wiki/Thi%E2%81%BF-t%C3%A9ng" title="Thiⁿ-téng - xinès min del sud" lang="nan" hreflang="nan" data-title="Thiⁿ-téng" data-language-autonym="閩南語 / Bân-lâm-gú" data-language-local-name="xinès min del sud" class="interlanguage-link-target"><span>閩南語 / Bân-lâm-gú</span></a></li><li class="interlanguage-link interwiki-zh-yue mw-list-item"><a href="https://zh-yue.wikipedia.org/wiki/%E5%A4%A9" title="天 - cantonès" lang="yue" hreflang="yue" data-title="天" data-language-autonym="粵語" data-language-local-name="cantonès" class="interlanguage-link-target"><span>粵語</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q527#sitelinks-wikipedia" title="Modifica enllaços interlingües" class="wbc-editpage">Modifica els enllaços</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Espais de noms"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Cel" title="Vegeu el contingut de la pàgina [c]" accesskey="c"><span>Pàgina</span></a></li><li id="ca-talk" class="new vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Discussi%C3%B3:Cel&action=edit&redlink=1" rel="discussion" class="new" title="Discussió sobre el contingut d'aquesta pàgina (encara no existeix) [t]" accesskey="t"><span>Discussió</span></a></li> </ul> </div> </div> <div id="vector-variants-dropdown" class="vector-dropdown emptyPortlet" > <input type="checkbox" id="vector-variants-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-variants-dropdown" class="vector-dropdown-checkbox " aria-label="Canvia la variant de llengua" > <label id="vector-variants-dropdown-label" for="vector-variants-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">català</span> </label> <div class="vector-dropdown-content"> <div id="p-variants" class="vector-menu mw-portlet mw-portlet-variants emptyPortlet" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> </ul> </div> </div> </div> </div> </nav> </div> <div id="right-navigation" class="vector-collapsible"> <nav aria-label="Vistes"> <div id="p-views" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-views" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-view" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/Cel"><span>Mostra</span></a></li><li id="ca-edit" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Cel&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-history" class="vector-tab-noicon mw-list-item"><a href="/w/index.php?title=Cel&action=history" title="Versions antigues d'aquesta pàgina [h]" accesskey="h"><span>Mostra l'historial</span></a></li> </ul> </div> </div> </nav> <nav class="vector-page-tools-landmark" aria-label="Eines de la pàgina"> <div id="vector-page-tools-dropdown" class="vector-dropdown vector-page-tools-dropdown" > <input type="checkbox" id="vector-page-tools-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-tools-dropdown" class="vector-dropdown-checkbox " aria-label="Eines" > <label id="vector-page-tools-dropdown-label" for="vector-page-tools-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet" aria-hidden="true" ><span class="vector-dropdown-label-text">Eines</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-tools-unpinned-container" class="vector-unpinned-container"> <div id="vector-page-tools" class="vector-page-tools vector-pinnable-element"> <div class="vector-pinnable-header vector-page-tools-pinnable-header vector-pinnable-header-unpinned" data-feature-name="page-tools-pinned" data-pinnable-element-id="vector-page-tools" data-pinned-container-id="vector-page-tools-pinned-container" data-unpinned-container-id="vector-page-tools-unpinned-container" > <div class="vector-pinnable-header-label">Eines</div> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-page-tools.pin">mou a la barra lateral</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-page-tools.unpin">amaga</button> </div> <div id="p-cactions" class="vector-menu mw-portlet mw-portlet-cactions emptyPortlet vector-has-collapsible-items" title="Més opcions" > <div class="vector-menu-heading"> Accions </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-more-view" class="selected vector-more-collapsible-item mw-list-item"><a href="/wiki/Cel"><span>Mostra</span></a></li><li id="ca-more-edit" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Cel&action=edit" title="Modifica el codi font d'aquesta pàgina [e]" accesskey="e"><span>Modifica</span></a></li><li id="ca-more-history" class="vector-more-collapsible-item mw-list-item"><a href="/w/index.php?title=Cel&action=history"><span>Mostra l'historial</span></a></li> </ul> </div> </div> <div id="p-tb" class="vector-menu mw-portlet mw-portlet-tb" > <div class="vector-menu-heading"> General </div> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="t-whatlinkshere" 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class="mw-redirect" title="Firmament">Firmament</a>)</span></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="ca" dir="ltr"><style data-mw-deduplicate="TemplateStyles:r34261971">.mw-parser-output .hatnote{width:100%;border-color:#77ccff;color:var(--color-base,#202122);background-color:#f5f5f5;margin-bottom:1em;font-style:italic}.mw-parser-output .hatnote i{font-style:normal}@media screen{html.skin-theme-clientpref-night .mw-parser-output .hatnote{color:var(--color-inverted,#fff);background-color:var(--background-color-inverted,#101418)}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .hatnote{color:var(--color-inverted,#fff);background-color:var(--background-color-inverted,#101418)}}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style> <table class="hatnote" cellspacing="5"> <tbody><tr> <td style="width: 25px; vertical-align: top;"><span typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/22px-Disambig_grey.svg.png" decoding="async" width="22" height="17" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/33px-Disambig_grey.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Disambig_grey.svg/44px-Disambig_grey.svg.png 2x" data-file-width="260" data-file-height="200" /></span></span> </td> <td>Aquest article tracta sobre el cel físic; per al concepte religiós i espiritual, vegeu l'article <b><a href="/wiki/Cel_(religi%C3%B3)" title="Cel (religió)">Cel (religió)</a></b>. </td></tr></tbody></table> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:Sky_with_puffy_clouds.JPG" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Sky_with_puffy_clouds.JPG/220px-Sky_with_puffy_clouds.JPG" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Sky_with_puffy_clouds.JPG/330px-Sky_with_puffy_clouds.JPG 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e7/Sky_with_puffy_clouds.JPG/440px-Sky_with_puffy_clouds.JPG 2x" data-file-width="2560" data-file-height="1920" /></a><figcaption>El cel de dia</figcaption></figure> <p>El <b>cel</b> és l'espai visible des de la <a href="/wiki/Terra" title="Terra">Terra</a> quan es mira en direcció oposada a aquesta. El <a href="/wiki/Zenit" title="Zenit">zenit</a> és el punt del cel que es correspon amb la vertical del lloc, i el seu oposat s'anomena <a href="/wiki/Nadir" title="Nadir">nadir</a>. </p><p>En <a href="/wiki/Astronomia" title="Astronomia">astronomia</a> <i>cel</i> és sinònim d'<a href="/wiki/Firmament" class="mw-redirect" title="Firmament">esfera celestial</a>: una <a href="/wiki/Volta" title="Volta">volta</a> imaginària sobre la qual es distribueixen el <a href="/wiki/Sol" title="Sol">Sol</a>, els <a href="/wiki/Estel" title="Estel">estels</a>, els <a href="/wiki/Planetes" class="mw-redirect" title="Planetes">planetes</a> i la <a href="/wiki/Lluna" title="Lluna">Lluna</a>. L'esfera celestial es divideix en regions denominades <a href="/wiki/Constel%C2%B7laci%C3%B3" title="Constel·lació">constel·lacions</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>En <a href="/wiki/Meteorologia" title="Meteorologia">meteorologia</a> el terme <i>cel</i> fa referència a la zona gasosa més densa de l'<a href="/wiki/Atmosfera_terrestre" title="Atmosfera terrestre">atmosfera</a> d'un <a href="/wiki/Planeta" title="Planeta">planeta</a>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>El color del cel és el resultat de la <a href="/wiki/Radiaci%C3%B3_difusa" title="Radiació difusa">radiació difusa</a>, interacció de la <a href="/wiki/Llum" title="Llum">llum</a> solar amb l'atmosfera.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> En un dia solejat el cel del nostre planeta es veu generalment blau clar. El color varia entre el <a href="/wiki/Taronja" title="Taronja">taronja</a> i el <a href="/wiki/Vermell" class="mw-redirect" title="Vermell">vermell</a> durant l'<a href="/wiki/Crepuscle" title="Crepuscle">alba</a> i el <a href="/wiki/Capvespre" title="Capvespre">capvespre</a>. Quan arriba la <a href="/wiki/Nit" title="Nit">nit</a> el color passa a ser blau molt fosc, quasi negre. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Fitxer:Sky_Dusk.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Sky_Dusk.jpg/220px-Sky_Dusk.jpg" decoding="async" width="220" height="165" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Sky_Dusk.jpg/330px-Sky_Dusk.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/21/Sky_Dusk.jpg/440px-Sky_Dusk.jpg 2x" data-file-width="2048" data-file-height="1536" /></a><figcaption>El cel a l'alba</figcaption></figure> <p>Durant el dia el sol es pot veure al cel, a menys que estigui ocult pels <a href="/wiki/N%C3%BAvols" class="mw-redirect" title="Núvols">núvols</a>. Durant la nit (i en cert grau durant el dia) la <a href="/wiki/Lluna" title="Lluna">Lluna</a>, els <a href="/wiki/Estel" title="Estel">estels</a> i, a vegades, alguns <a href="/wiki/Planetes" class="mw-redirect" title="Planetes">planetes</a> veïns són visibles al cel. </p><p>Alguns dels fenòmens naturals vistos al cel són els núvols, l'<a href="/wiki/Arc_de_Sant_Mart%C3%AD" title="Arc de Sant Martí">arc de Sant Martí</a> i l'<a href="/wiki/Aurora_polar" title="Aurora polar">aurora</a>. El <a href="/wiki/Llamp" title="Llamp">llamp</a> es pot veure al cel durant les <a href="/wiki/Tempesta" title="Tempesta">tempestes</a> elèctriques. Com a resultat d'activitats humanes, la <a href="/wiki/Boira" title="Boira">boira</a> es veu sovint sobre grans ciutats durant les primeres hores del matí. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Història_de_l'observació_del_cel"><span id="Hist.C3.B2ria_de_l.27observaci.C3.B3_del_cel"></span>Història de l'observació del cel</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cel&action=edit&section=1" title="Modifica la secció: Història de l'observació del cel"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Al llarg de la història l'home ha mirat al cel i ha buscat una relació entre totes les seves particularitats. Un primer enfocament de la disciplina astronòmica va abordar por el costat pràctic observant l'<a href="/wiki/Esfera_celeste" title="Esfera celeste">esfera celeste</a>. </p><p>Les <a href="/wiki/Cultura" title="Cultura">cultures</a> primitives identificaven els objectes celestials amb els <a href="/wiki/Mitologia" title="Mitologia">déus</a> i els <a href="/wiki/%C3%89sser_espiritual" class="mw-redirect" title="Ésser espiritual">éssers espirituals</a>.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> En l'Antiguitat la <a href="/wiki/Mesopot%C3%A0mia" title="Mesopotàmia">civilització mesopotàmica</a> van dividir l'<a href="/wiki/Esfera_celeste" title="Esfera celeste">esfera celeste</a> en <a href="/wiki/Constel%C2%B7laci%C3%B3" title="Constel·lació">constel·lacions</a>, i van anomenar <a href="/wiki/Zod%C3%ADac" title="Zodíac"><i>constel·lacions zodiacals</i></a> les 12 que marquen el moviment anual del Sol en el cel. Els <a href="/wiki/Antics_grecs" class="mw-redirect" title="Antics grecs">antics grecs</a> van fer importants contribucions a l'astronomia. Segons <a href="/wiki/Arist%C3%B2til" title="Aristòtil">Aristòtil</a> i <a href="/wiki/Plat%C3%B3" title="Plató">Plató</a>, l'<a href="/wiki/Univers" title="Univers">univers</a> era <a href="/wiki/Finit" class="mw-redirect" title="Finit">finit</a> i <a href="/wiki/Esfera" title="Esfera">esfèric</a>. El primer ja presenta les observacions i especulacions sobre l'origen dels fenòmens atmosfèrics i <a href="/wiki/Espai_exterior" title="Espai exterior">celestes</a>.<sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Teofrast" title="Teofrast">Teofrast</a>, deixeble seu va publicar un text centrat a la previsió del temps sobre la base de les observacions dels fenòmens meteorològics.<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> Posteriorment se succeeixen diferents progressos al camp meteorològic amb el desenvolupament d'instruments més segurs. <a href="/wiki/Galileo_Galilei" title="Galileo Galilei">Galileu</a> construeix un <a href="/wiki/Term%C3%B2metre" title="Termòmetre">termòmetre</a> el 1607, seguit de la invenció del <a href="/wiki/Bar%C3%B2metre" title="Baròmetre">baròmetre</a> per <a href="/wiki/Evangelista_Torricelli" title="Evangelista Torricelli">Evangelista Torricelli</a> el 1643. La primera acció sobre la dependència de la <a href="/wiki/Pressi%C3%B3_atmosf%C3%A8rica" title="Pressió atmosfèrica">pressió atmosfèrica</a> en funció de l'alçada la fa <a href="/wiki/Blaise_Pascal" title="Blaise Pascal">Blaise Pascal</a> i <a href="/wiki/Ren%C3%A9_Descartes" title="René Descartes">René Descartes</a>. Amb la <a href="/wiki/Revoluci%C3%B3_de_Cop%C3%A8rnic" title="Revolució de Copèrnic">revolució copernicana</a> que va començar l'any 1543 es va acabar la vinculació de l'astrologia i l'astronomia que tant suport econòmic i social havia rebut per part de l'<a href="/wiki/Esgl%C3%A9sia_(instituci%C3%B3)" title="Església (institució)">Església cristiana</a>, des del segle XII fins a la <a href="/wiki/Il%C2%B7lustraci%C3%B3" title="Il·lustració">Il·lustració</a>.<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> </p><p>L'<a href="/wiki/Anem%C3%B2metre" title="Anemòmetre">anemòmetre</a> per a la mesura de la velocitat del <a href="/wiki/Vent" title="Vent">vent</a> el construeix el 1667 <a href="/wiki/Robert_Hooke" title="Robert Hooke">Robert Hooke</a>,<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> mentre que <a href="/wiki/Horace-B%C3%A9n%C3%A9dict_de_Saussure" title="Horace-Bénédict de Saussure">Horaci de Saussure</a> incorpora el 1780 amb l'<a href="/wiki/Higr%C3%B2metre" title="Higròmetre">higròmetre</a> de cabell, que mesura la <a href="/wiki/Humitat" title="Humitat">humitat</a>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> Benjamin Franklin va investigar la dependència del volum de <a href="/wiki/Gas" title="Gas">gasos</a> sobre la <a href="/wiki/Pressi%C3%B3" title="Pressió">pressió</a>, que conduiria a la <a href="/wiki/Termodin%C3%A0mica" title="Termodinàmica">termodinàmica</a>, i va ser el primer americà a registrar de manera detallada la condició del temps diàriament, i dels primers a efectuar <a href="/wiki/Pron%C3%B2stic_meteorol%C3%B2gic" class="mw-redirect" title="Pronòstic meteorològic">previsions meteorològiques</a>. <a href="/wiki/George_Hadley" title="George Hadley">George Hadley</a>, va donar una correcta explicació general de la <a href="/wiki/Circulaci%C3%B3_atmosf%C3%A8rica" title="Circulació atmosfèrica">circulació atmosfèrica</a> global. Ja al segle <span title="Nombre escrit en xifres romanes" style="font-variant:small-caps;">xix</span> <a href="/w/index.php?title=Luke_Howard&action=edit&redlink=1" class="new" title="Luke Howard (encara no existeix)">Luke Howard</a> i <a href="/wiki/Francis_Beaufort" title="Francis Beaufort">Francis Beaufort</a> introdueixen el seu sistema de classificació de núvols, de 1802<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> i de la força del vent, de 1806.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p><p>A Catalunya, <a href="/wiki/Eduard_Fontser%C3%A8_i_Riba" title="Eduard Fontserè i Riba">Eduard Fontseré</a> va ser un meteoròleg que va contribuir a la consolidació d'aquesta ciència al nostre país. Un dels seus assaigs "<i>El Cel de Catalunya"</i>,<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup>llegit a l'<a href="/wiki/Ateneu_Barcelon%C3%A8s" title="Ateneu Barcelonès">Ateneu Barcelonès</a> el 1935 és considerat com un text clau per la ciència <a href="/wiki/Meteorologia" title="Meteorologia">meteorològica</a> catalana.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Colors">Colors</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cel&action=edit&section=2" title="Modifica la secció: Colors"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Durant_el_dia">Durant el dia</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cel&action=edit&section=3" title="Modifica la secció: Durant el dia"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Durant el dia el cel és normalment de color blau,<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup> això és degut a la desviació dels raigs de <a href="/wiki/Longitud_d%27ona" title="Longitud d'ona">longitud d'ona</a> curta, com el blau i el violeta, i perquè les molècules d'aire <a href="/wiki/Difusi%C3%B3_de_Rayleigh" title="Difusió de Rayleigh">dispersen longituds d'ona més curtes</a> de la <a href="/wiki/Radiaci%C3%B3_solar" title="Radiació solar">llum solar</a> més que les més llargues (llum més vermella).<sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> El <a href="/wiki/Cel_nocturn" title="Cel nocturn">cel nocturn</a> sembla ser una superfície o regió majoritàriament fosca amb <a href="/wiki/Estel" title="Estel">estels</a>.<sup id="cite_ref-17" class="reference"><a href="#cite_note-17"><span class="cite-bracket">[</span>17<span class="cite-bracket">]</span></a></sup> El Sol i, de vegades, la Lluna són visibles al cel durant el dia, tret que estiguin enfosquits pels <a href="/wiki/N%C3%BAvol" title="Núvol">núvols</a>. A la nit, la Lluna, els planetes i les estrelles són igualment visibles al cel. </p><p>L'<a href="/wiki/Ull" title="Ull">ull</a> humà és més sensible al blau que el violeta, a més a més la <a href="/wiki/Llum" title="Llum">llum</a> solar compta amb més blau. Això fa que el cel no sigui lila, que té longitud més curta. la part que envolta el <a href="/wiki/Sol" title="Sol">Sol</a>, té un color groc vermellós, que és degut a la desviació dels raigs de longitud d'ona llarga. La del groc i el vermell és molt petita, per la qual cosa aquests arriben quasi en línia recta des del <a href="/wiki/Sol" title="Sol">Sol</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Posta_de_sol">Posta de sol</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cel&action=edit&section=4" title="Modifica la secció: Posta de sol"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/w/index.php?title=Plantilla:Ap&action=edit&redlink=1" class="new" title="Plantilla:Ap (encara no existeix)">Plantilla:Ap</a> Durant la posta de sol la <a href="/wiki/Llum" title="Llum">llum</a> del sol arriba de manera tangent a la superfície de la <a href="/wiki/Terra" title="Terra">Terra</a>, per tant recorre molt més aire, fet que provoca que els raigs grocs siguin difuminats, només els raigs vermells arriben directament del <a href="/wiki/Sol" title="Sol">Sol</a>, això provoca que vegem el cel ataronjat o groguenc i el Sol pràcticament vermell. També influeix la pols i les partícules que floten en l'aire, factor que augmenta significativament quan hi ha altes pressions.<sup id="cite_ref-18" class="reference"><a href="#cite_note-18"><span class="cite-bracket">[</span>18<span class="cite-bracket">]</span></a></sup> </p><p>La lluentor i el color del cel varien molt al llarg d'un dia, i la causa principal d'aquestes propietats també difereix. Quan el Sol està molt per sobre de l'horitzó, la dispersió directa de la llum solar (<a href="/wiki/Dispersi%C3%B3_de_Rayleigh" class="mw-redirect" title="Dispersió de Rayleigh">dispersió de Rayleigh</a>) és la font de llum aclaparadorament dominant. No obstant això, durant el crepuscle, el període entre la posta de sol i la nit o entre la nit i l'alba, la situació és més complexa. </p><p>Les llampades i els raigs verds són fenòmens òptics que es produeixen poc després de la posta de sol o abans de l'alba, quan un punt verd és visible per sobre del Sol, normalment durant no més d'un o dos segons, o pot assemblar-se a un raig verd que surt disparat des del punt de la posta de sol. Els centelleigs verds són un grup de fenòmens que obeeixen a diferents causes,<sup id="cite_ref-young_19-0" class="reference"><a href="#cite_note-young-19"><span class="cite-bracket">[</span>19<span class="cite-bracket">]</span></a></sup> la majoria es produeixen quan hi ha una inversió de temperatura (quan la temperatura augmenta amb l'altitud en lloc de la disminució normal de la temperatura amb l'altitud). Els centelleigs verds poden observar-se des de qualsevol altitud (fins i tot des d'un avió). Solen veure's per sobre d'un horitzó sense obstacles, com ara sobre l'oceà, però també es veuen per sobre dels núvols i les muntanyes. Els centelleigs verds també es poden observar a l'horitzó en associació amb la Lluna i els planetes brillants, inclosos Venus i Júpiter.<sup id="cite_ref-20" class="reference"><a href="#cite_note-20"><span class="cite-bracket">[</span>20<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-21" class="reference"><a href="#cite_note-21"><span class="cite-bracket">[</span>21<span class="cite-bracket">]</span></a></sup> </p><p>L'<a href="/w/index.php?title=Ombra_de_la_Terra&action=edit&redlink=1" class="new" title="Ombra de la Terra (encara no existeix)">ombra de la Terra</a> és la que projecta el planeta a través de la seva atmosfera i cap a l'<a href="/wiki/Espai_exterior" title="Espai exterior">espai exterior</a>. Aquest fenomen atmosfèric és visible durant el crepuscle civil (després de la posta del sol i abans de la sortida). Quan les condicions meteorològiques i el lloc d'observació permeten una visió clara de l'horitzó, la franja de l‟ombra apareix com una banda fosca o blavosa apagada just per sobre de l'horitzó, a la part baixa del cel oposada a la direcció del Sol (ponent o naixent). Un fenomen relacionat és el <a href="/wiki/Cintur%C3%B3_de_Venus" title="Cinturó de Venus">Cinturó de Venus</a> (o arc anticrepuscular), una banda rosada que és visible per sobre de la banda blavosa de l'ombra de la Terra a la mateixa part del cel. Cap línia definida no divideix l'ombra de la Terra i el Cinturó de Venus; una banda de color s'esvaeix a l'altra al cel.<sup id="cite_ref-AO_22-0" class="reference"><a href="#cite_note-AO-22"><span class="cite-bracket">[</span>22<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-earth-shadow_23-0" class="reference"><a href="#cite_note-earth-shadow-23"><span class="cite-bracket">[</span>23<span class="cite-bracket">]</span></a></sup> </p><p>El crepuscle es divideix en tres etapes segons la profunditat del Sol sota l'horitzó, mesurada en segments de 6°. Després de la posta de sol, es produeix el crepuscle civil, que finalitza quan el Sol baixa més de 6° per sota de l'horitzó. El segueix el crepuscle nàutic, quan el Sol està entre 6° i 12° per sota de l'horitzó (profunditat entre -6° i -12°), després del qual ve el crepuscle astronòmic, definit com el període entre -12° i -18°. Quan el Sol baixa més de 18° per sota de l'horitzó, el cel sol assolir la seva brillantor mínima.<sup id="cite_ref-24" class="reference"><a href="#cite_note-24"><span class="cite-bracket">[</span>24<span class="cite-bracket">]</span></a></sup> </p><p>Es poden identificar diverses fonts com a origen de la brillantor intrínseca del cel, és a dir, la resplendor de l'aire, la dispersió indirecta de la llum solar, la dispersió de la llum de les estrelles i la contaminació lumínica artificial. </p> <div class="mw-heading mw-heading3"><h3 id="Nit">Nit</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cel&action=edit&section=5" title="Modifica la secció: Nit"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Per la nit es veu el cel extremadament fosc, es podria dir, fins i tot, negre. Aquest fenomen és a causa del fet que no arriba un número molt lleu de llum, només reflectida per la <a href="/wiki/Lluna" title="Lluna">Lluna</a> i les <a href="/wiki/Estrella" class="mw-redirect" title="Estrella">estrelles</a>, que no arriben a il·luminar la superfície terrestre. </p> <div class="mw-heading mw-heading3"><h3 id="Altres_casos">Altres casos</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cel&action=edit&section=6" title="Modifica la secció: Altres casos"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Els núvols que es formen de grans partícules incolores, reben llum i la reflecteixen sense canviar de color, per això, veiem els <a href="/wiki/N%C3%BAvols" class="mw-redirect" title="Núvols">núvols</a> blancs Això és un exemple de la <a href="/wiki/Difusi%C3%B3_de_Mie" title="Difusió de Mie">difusió de Mie</a>.<sup id="cite_ref-25" class="reference"><a href="#cite_note-25"><span class="cite-bracket">[</span>25<span class="cite-bracket">]</span></a></sup>Si aquesta succeís de forma exagerada, la llum no seria reflectida sinó absorbida, y el blanc passaria a una escala de grisos a negre, depenent de l'amplitud del núvol. </p> <div class="mw-heading mw-heading2"><h2 id="Referències"><span id="Refer.C3.A8ncies"></span>Referències</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cel&action=edit&section=7" title="Modifica la secció: Referències"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="reflist {{#if: | references-column-count references-column-count-{{{col}}}" style="list-style-type: decimal;"> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFZeilik2002"><span style="font-variant: small-caps;">Zeilik</span>, Michael. <a rel="nofollow" class="external text" href="https://books.google.cat/books?id=f2Xjzu0qR7IC&pg=PA4&dq=astronomy+sky&hl=ca&sa=X&ved=2ahUKEwjEpKC-g4X4AhUXiv0HHdPtCHw4ChDoAXoECAQQAg#v=onepage&q=astronomy%20sky&f=false"><i>Astronomy: The Evolving Universe</i></a> (en anglès).  Cambridge University Press, 2002-01-14, p. 4. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-0-521-80090-7" title="Especial:Fonts bibliogràfiques/978-0-521-80090-7">ISBN 978-0-521-80090-7</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Astronomy%3A+The+Evolving+Universe&rft.aulast=Zeilik&rft.aufirst=Michael&rft.date=2002-01-14&rft.pub=Cambridge+University+Press&rft.pages=4&rft.isbn=978-0-521-80090-7&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fid%3Df2Xjzu0qR7IC%26pg%3DPA4%26dq%3Dastronomy%2Bsky%26hl%3Dca%26sa%3DX%26ved%3D2ahUKEwjEpKC-g4X4AhUXiv0HHdPtCHw4ChDoAXoECAQQAg%23v%3Donepage%26q%3Dastronomy%2520sky%26f%3Dfalse"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFIbanezHernandez-EsparzaDoria-SerranoFregoso-Infante2010"><span style="font-variant: small-caps;">Ibanez</span>, Jorge G.; <span style="font-variant: small-caps;">Hernandez-Esparza</span>, Margarita; <span style="font-variant: small-caps;">Doria-Serrano</span>, Carmen; <span style="font-variant: small-caps;">Fregoso-Infante</span>, Arturo; <span style="font-variant: small-caps;">Singh</span>, Mono Mohan. <a rel="nofollow" class="external text" href="https://books.google.cat/books?hl=ca&id=YDRxgf-ZeOkC&dq=Environmental+Chemistry.+A+global+perspective.&q=sky#v=snippet&q=sky&f=false"><i>Environmental Chemistry: Fundamentals</i></a> (en anglès).  Springer Science & Business Media, 2010-05-27, p. 69. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-0-387-31435-8" title="Especial:Fonts bibliogràfiques/978-0-387-31435-8">ISBN 978-0-387-31435-8</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Environmental+Chemistry%3A+Fundamentals&rft.aulast=Ibanez&rft.aufirst=Jorge+G.&rft.date=2010-05-27&rft.pub=Springer+Science+%26+Business+Media&rft.pages=69&rft.isbn=978-0-387-31435-8&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fhl%3Dca%26id%3DYDRxgf-ZeOkC%26dq%3DEnvironmental%2BChemistry.%2BA%2Bglobal%2Bperspective.%26q%3Dsky%23v%3Dsnippet%26q%3Dsky%26f%3Dfalse"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://www.sciencedirect.com/topics/engineering/diffuse-radiation#:~:text=Diffuse%20Radiation%20(Gd)%20is%20the,atmosphere%20(Wm%E2%88%922).">Diffuse Radiation - an overview</a>».  ScienceDirect Topics. [Consulta: 29 maig 2022].</span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><a href="#cite_ref-4">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFKrupp2003"><span style="font-variant: small-caps;">Krupp</span>, E. C.. <a rel="nofollow" class="external text" href="https://books.google.cat/books?id=7rMAJ87WTF0C&pg=PA70"><i>Echoes of the Ancient Skies: The Astronomy of Lost Civilizations</i></a> (en anglès).  Courier Corporation, 2003-08-05, p. 62-72. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-0-486-42882-6" title="Especial:Fonts bibliogràfiques/978-0-486-42882-6">ISBN 978-0-486-42882-6</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Echoes+of+the+Ancient+Skies%3A+The+Astronomy+of+Lost+Civilizations&rft.aulast=Krupp&rft.aufirst=E.+C.&rft.date=2003-08-05&rft.pub=Courier+Corporation&rft.pages=62-72&rft.isbn=978-0-486-42882-6&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fid%3D7rMAJ87WTF0C%26pg%3DPA70"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><a href="#cite_ref-5">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="http://rammb.cira.colostate.edu/dev/hillger/ancient.htm#biruni">Ancient and pre-Renaissance Contributors to Meteorology</a>».  rammb.cira.colostate.edu. [Consulta: 29 maig 2022].</span></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><a href="#cite_ref-6">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFBrunschönSider2007"><span style="font-variant: small-caps;">Brunschön</span>, C. W.; <span style="font-variant: small-caps;">Sider</span>, David. <a rel="nofollow" class="external text" href="https://books.google.cat/books?id=UtSvCQAAQBAJ&pg=PA13&dq=book+of+signals+theophrastus&hl=ca&sa=X&ved=2ahUKEwjhiJipkIX4AhVO_4UKHY55AKQQ6AF6BAgDEAI#v=onepage&q=book%20of%20signals%20theophrastus&f=false"><i>Theophrastus of Eresus: On Weather Signs</i></a> (en anglès).  BRILL, 2007-03-31, p. 13. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-90-474-1179-6" title="Especial:Fonts bibliogràfiques/978-90-474-1179-6">ISBN 978-90-474-1179-6</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Theophrastus+of+Eresus%3A+On+Weather+Signs&rft.aulast=Brunsch%C3%B6n&rft.aufirst=C.+W.&rft.date=2007-03-31&rft.pub=BRILL&rft.pages=13&rft.isbn=978-90-474-1179-6&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fid%3DUtSvCQAAQBAJ%26pg%3DPA13%26dq%3Dbook%2Bof%2Bsignals%2Btheophrastus%26hl%3Dca%26sa%3DX%26ved%3D2ahUKEwjhiJipkIX4AhVO_4UKHY55AKQQ6AF6BAgDEAI%23v%3Donepage%26q%3Dbook%2520of%2520signals%2520theophrastus%26f%3Dfalse"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><a href="#cite_ref-7">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFHeilbronHeilbron2009"><span style="font-variant: small-caps;">Heilbron</span>, J. L.; <span style="font-variant: small-caps;">Heilbron</span>, Professor of the History of Science John L. <a rel="nofollow" class="external text" href="https://books.google.cat/books?id=mZWy0xPxj3EC&printsec=frontcover&dq=The+Sun+in+the+Church:+Cathedrals+as+Solar+Observatories.&hl=ca&sa=X&redir_esc=y#v=onepage&q=The%20Sun%20in%20the%20Church:%20Cathedrals%20as%20Solar%20Observatories.&f=false"><i>The Sun in the Church: Cathedrals as Solar Observatories</i></a> (en anglès).  Harvard University Press, 2009-06-01, p. 3. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-0-674-03848-6" title="Especial:Fonts bibliogràfiques/978-0-674-03848-6">ISBN 978-0-674-03848-6</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Sun+in+the+Church%3A+Cathedrals+as+Solar+Observatories&rft.aulast=Heilbron&rft.aufirst=J.+L.&rft.date=2009-06-01&rft.pub=Harvard+University+Press&rft.pages=3&rft.isbn=978-0-674-03848-6&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fid%3DmZWy0xPxj3EC%26printsec%3Dfrontcover%26dq%3DThe%2BSun%2Bin%2Bthe%2BChurch%3A%2BCathedrals%2Bas%2BSolar%2BObservatories.%26hl%3Dca%26sa%3DX%26redir_esc%3Dy%23v%3Donepage%26q%3DThe%2520Sun%2520in%2520the%2520Church%3A%2520Cathedrals%2520as%2520Solar%2520Observatories.%26f%3Dfalse"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><a href="#cite_ref-8">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFTeagueGallicchio2017"><span style="font-variant: small-caps;">Teague</span>, Kevin Anthony; <span style="font-variant: small-caps;">Gallicchio</span>, Nicole. <a rel="nofollow" class="external text" href="https://books.google.cat/books?id=KNPbDgAAQBAJ&pg=PA16&dq=Robert+Hooke+Anemometer&hl=ca&sa=X&ved=2ahUKEwjh-8WzlYX4AhUrhv0HHUCPCMk4ChDoAXoECAkQAg#v=onepage&q=Robert%20Hooke%20Anemometer&f=false"><i>The Evolution of Meteorology: A Look into the Past, Present, and Future of Weather Forecasting</i></a> (en anglès).  John Wiley & Sons, 2017-05-12, p. 16. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-1-119-13615-6" title="Especial:Fonts bibliogràfiques/978-1-119-13615-6">ISBN 978-1-119-13615-6</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Evolution+of+Meteorology%3A+A+Look+into+the+Past%2C+Present%2C+and+Future+of+Weather+Forecasting&rft.aulast=Teague&rft.aufirst=Kevin+Anthony&rft.date=2017-05-12&rft.pub=John+Wiley+%26+Sons&rft.pages=16&rft.isbn=978-1-119-13615-6&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fid%3DKNPbDgAAQBAJ%26pg%3DPA16%26dq%3DRobert%2BHooke%2BAnemometer%26hl%3Dca%26sa%3DX%26ved%3D2ahUKEwjh-8WzlYX4AhUrhv0HHUCPCMk4ChDoAXoECAkQAg%23v%3Donepage%26q%3DRobert%2520Hooke%2520Anemometer%26f%3Dfalse"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><a href="#cite_ref-9">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFKorotcenkov2019"><span style="font-variant: small-caps;">Korotcenkov</span>, Ghenadii. <a rel="nofollow" class="external text" href="https://books.google.cat/books?id=9NKFDwAAQBAJ&pg=PA23&dq=Horace+B%C3%A9n%C3%A9dict+de+Saussure+hygrometer&hl=ca&sa=X&ved=2ahUKEwjg1pPSlYX4AhUAiP0HHaylArMQ6AF6BAgLEAI#v=onepage&q=Horace%20B%C3%A9n%C3%A9dict%20de%20Saussure%20hygrometer&f=false"><i>Handbook of Humidity Measurement, Volume 2: Electronic and Electrical Humidity Sensors</i></a> (en anglès).  CRC Press, 2019-01-25, p. 23. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-1-351-40056-5" title="Especial:Fonts bibliogràfiques/978-1-351-40056-5">ISBN 978-1-351-40056-5</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Handbook+of+Humidity+Measurement%2C+Volume+2%3A+Electronic+and+Electrical+Humidity+Sensors&rft.aulast=Korotcenkov&rft.aufirst=Ghenadii&rft.date=2019-01-25&rft.pub=CRC+Press&rft.pages=23&rft.isbn=978-1-351-40056-5&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fid%3D9NKFDwAAQBAJ%26pg%3DPA23%26dq%3DHorace%2BB%25C3%25A9n%25C3%25A9dict%2Bde%2BSaussure%2Bhygrometer%26hl%3Dca%26sa%3DX%26ved%3D2ahUKEwjg1pPSlYX4AhUAiP0HHaylArMQ6AF6BAgLEAI%23v%3Donepage%26q%3DHorace%2520B%25C3%25A9n%25C3%25A9dict%2520de%2520Saussure%2520hygrometer%26f%3Dfalse"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><a href="#cite_ref-10">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFSiebesmaBonyJakobStevens2020"><span style="font-variant: small-caps;">Siebesma</span>, A. Pier; <span style="font-variant: small-caps;">Bony</span>, Sandrine; <span style="font-variant: small-caps;">Jakob</span>, Christian; <span style="font-variant: small-caps;">Stevens</span>, Bjorn. <a rel="nofollow" class="external text" href="https://books.google.cat/books?id=rvXvDwAAQBAJ&pg=PA3&dq=luke+howard+cloud+classification&hl=ca&sa=X&ved=2ahUKEwixvdHOlIX4AhXhhP0HHfzmB-MQ6AF6BAgLEAI#v=onepage&q=luke%20howard%20cloud%20classification&f=false"><i>Clouds and Climate: Climate Science's Greatest Challenge</i></a> (en anglès).  Cambridge University Press, 2020-08-20, p. 3. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-1-107-06107-1" title="Especial:Fonts bibliogràfiques/978-1-107-06107-1">ISBN 978-1-107-06107-1</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Clouds+and+Climate%3A+Climate+Science%27s+Greatest+Challenge&rft.aulast=Siebesma&rft.aufirst=A.+Pier&rft.date=2020-08-20&rft.pub=Cambridge+University+Press&rft.pages=3&rft.isbn=978-1-107-06107-1&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fid%3DrvXvDwAAQBAJ%26pg%3DPA3%26dq%3Dluke%2Bhoward%2Bcloud%2Bclassification%26hl%3Dca%26sa%3DX%26ved%3D2ahUKEwixvdHOlIX4AhXhhP0HHfzmB-MQ6AF6BAgLEAI%23v%3Donepage%26q%3Dluke%2520howard%2520cloud%2520classification%26f%3Dfalse"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><a href="#cite_ref-11">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFHamblyn2011"><span style="font-variant: small-caps;">Hamblyn</span>, Richard. <a rel="nofollow" class="external text" href="https://books.google.cat/books?id=HbajgFGBrTEC&pg=PA190&dq=Francis+Beaufort+wind+classification&hl=ca&sa=X&ved=2ahUKEwj8iMr7qoX4AhWo7rsIHW6LDtMQ6AF6BAgCEAI#v=onepage&q=Francis%20Beaufort%20wind%20classification&f=false"><i>The Invention of Clouds: How an Amateur Meteorologist Forged the Language of the Skies</i></a> (en anglès).  Pan Macmillan, 2011-02-28, p. 190. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-0-330-53730-8" title="Especial:Fonts bibliogràfiques/978-0-330-53730-8">ISBN 978-0-330-53730-8</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Invention+of+Clouds%3A+How+an+Amateur+Meteorologist+Forged+the+Language+of+the+Skies&rft.aulast=Hamblyn&rft.aufirst=Richard&rft.date=2011-02-28&rft.pub=Pan+Macmillan&rft.pages=190&rft.isbn=978-0-330-53730-8&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fid%3DHbajgFGBrTEC%26pg%3DPA190%26dq%3DFrancis%2BBeaufort%2Bwind%2Bclassification%26hl%3Dca%26sa%3DX%26ved%3D2ahUKEwj8iMr7qoX4AhWo7rsIHW6LDtMQ6AF6BAgCEAI%23v%3Donepage%26q%3DFrancis%2520Beaufort%2520wind%2520classification%26f%3Dfalse"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><a href="#cite_ref-12">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal" id="CITEREFFontseré1995"><span style="font-variant: small-caps;">Fontseré</span>, Eduard «<a rel="nofollow" class="external text" href="https://www.raco.cat/index.php/ButlletiSCFQMT/article/download/221790/302595">El Cel de Catalunya. Discurs llegit pel doctor Eduard Fontserè i Riba a l'Ateneu Barcelonès el 20 de març de 1935</a>». <i>Butlletí de les Societats Catalanes de Física, Química</i>, 1995.</span></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><a href="#cite_ref-13">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal" id="CITEREFArús_Dumenjó2015"><span style="font-variant: small-caps;">Arús Dumenjó</span>, Joan «<a rel="nofollow" class="external text" href="https://dialnet.unirioja.es/servlet/articulo?codigo=5615822">Eduard Fontserè, la meteorologia al servei del país i de la llengua</a>». <i>Terminàlia</i>, 11, 2015, pàg. 68–72. <a href="/wiki/ISSN" title="ISSN">ISSN</a>: <a rel="nofollow" class="external text" href="//www.worldcat.org/issn/2013-6706">2013-6706</a>.</span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><a href="#cite_ref-14">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">«<a rel="nofollow" class="external text" href="https://www.britannica.com/science/sunlight-solar-radiation">sunlight | Definition, Wavelengths, & Facts</a>» (en anglès).  britannica.com. [Consulta: 29 maig 2022].</span></span> </li> <li id="cite_note-15"><span class="mw-cite-backlink"><a href="#cite_ref-15">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal" id="CITEREFTyndall1869"><span style="font-variant: small-caps;">Tyndall</span>, John «<a rel="nofollow" class="external text" href="https://royalsocietypublishing.org/doi/10.1098/rspl.1868.0033">IV. On the blue colour of the sky, the polarization of skylight, and on the polarization of light by cloudy matter generally</a>». <i>Proceedings of the Royal Society of London</i>, 17, 01-01-1869, pàg. 223–233. <a href="/wiki/DOI" title="DOI">DOI</a>: <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1098%2Frspl.1868.0033">10.1098/rspl.1868.0033</a>.</span></span> </li> <li id="cite_note-16"><span class="mw-cite-backlink"><a href="#cite_ref-16">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal" id="CITEREFWatson2002"><span style="font-variant: small-caps;">Watson</span>, John G. «<a rel="nofollow" class="external text" href="https://doi.org/10.1080/10473289.2002.10470813">Visibility: Science and Regulation</a>». <i>Journal of the Air & Waste Management Association</i>, 52, 6, 01-06-2002, pàg. 628–713. <a href="/wiki/DOI" title="DOI">DOI</a>: <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1080%2F10473289.2002.10470813">10.1080/10473289.2002.10470813</a>. <a href="/wiki/ISSN" title="ISSN">ISSN</a>: <a rel="nofollow" class="external text" href="//www.worldcat.org/issn/1096-2247">1096-2247</a>.</span></span> </li> <li id="cite_note-17"><span class="mw-cite-backlink"><a href="#cite_ref-17">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFRoach1973"><span style="font-variant: small-caps;">Roach</span>, F. <a rel="nofollow" class="external text" href="https://books.google.cat/books?hl=ca&lr=&id=hzIEWM6NzLAC&oi=fnd&pg=PR11&dq=night+sky+definition&ots=BBINApATgs&sig=lq_ceF99afeU61N8Z7YIxrQmoc0&redir_esc=y#v=onepage&q=night%20sky%20definition&f=false"><i>The Light of the Night Sky</i></a> (en anglès).  Springer Science & Business Media, 1973-12-01. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-90-277-0293-7" title="Especial:Fonts bibliogràfiques/978-90-277-0293-7">ISBN 978-90-277-0293-7</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Light+of+the+Night+Sky&rft.aulast=Roach&rft.aufirst=F.&rft.date=1973-12-01&rft.pub=Springer+Science+%26+Business+Media&rft.isbn=978-90-277-0293-7&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fhl%3Dca%26lr%3D%26id%3DhzIEWM6NzLAC%26oi%3Dfnd%26pg%3DPR11%26dq%3Dnight%2Bsky%2Bdefinition%26ots%3DBBINApATgs%26sig%3Dlq_ceF99afeU61N8Z7YIxrQmoc0%26redir_esc%3Dy%23v%3Donepage%26q%3Dnight%2520sky%2520definition%26f%3Dfalse"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-18"><span class="mw-cite-backlink"><a href="#cite_ref-18">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFLynchLivingstonLivingston2001"><span style="font-variant: small-caps;">Lynch</span>, David K.; <span style="font-variant: small-caps;">Livingston</span>, William Charles; <span style="font-variant: small-caps;">Livingston</span>, William. <a rel="nofollow" class="external text" href="https://books.google.cat/books?id=4Abp5FdhskAC&pg=PA38"><i>Color and Light in Nature</i></a> (en anglès).  Cambridge University Press, 2001-06-11, p. 38-39. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-0-521-77504-5" title="Especial:Fonts bibliogràfiques/978-0-521-77504-5">ISBN 978-0-521-77504-5</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Color+and+Light+in+Nature&rft.aulast=Lynch&rft.aufirst=David+K.&rft.date=2001-06-11&rft.pub=Cambridge+University+Press&rft.pages=38-39&rft.isbn=978-0-521-77504-5&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fid%3D4Abp5FdhskAC%26pg%3DPA38"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-young-19"><span class="mw-cite-backlink"><a href="#cite_ref-young_19-0">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal">Young, A. «<a rel="nofollow" class="external text" href="http://mintaka.sdsu.edu/GF/papers/Zenit/glance.html">Green flashes at a glance</a>». <i><a href="/w/index.php?title=San_Diego_State_University&action=edit&redlink=1" class="new" title="San Diego State University (encara no existeix)">San Diego State University</a></i>, 2006.</span></span> </li> <li id="cite_note-20"><span class="mw-cite-backlink"><a href="#cite_ref-20">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal"><span style="font-variant: small-caps;">Nave</span>, C. R. «<a rel="nofollow" class="external text" href="http://hyperphysics.phy-astr.gsu.edu/hbase/atmos/redsun.html">Red Sunset, Green Flash</a>». <i>Georgia State University</i>.  HyperPhysics. [Consulta: 11 agost 2010].</span></span> </li> <li id="cite_note-21"><span class="mw-cite-backlink"><a href="#cite_ref-21">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal"><span style="font-variant: small-caps;">O'Connell</span>, D. J. K. «The green flash and other low sun phenomena». <i>Castel Gandolfo: Vatican Observatory, Ricerche Astronomiche</i>, vol. 4, 1958, pàg. 7. <a href="/wiki/Bibcode" title="Bibcode">Bibcode</a>: <a rel="nofollow" class="external text" href="http://adsabs.harvard.edu/abs/1958RA......4.....O">1958RA......4.....O</a>.</span></span> </li> <li id="cite_note-AO-22"><span class="mw-cite-backlink"><a href="#cite_ref-AO_22-0">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal"><span style="font-variant: small-caps;">Cowley</span>, Les. «<a rel="nofollow" class="external text" href="http://www.atoptics.co.uk/atoptics/earshad.htm">Earth's shadow</a>», 02-08-2009. [Consulta: 15 febrer 2012].</span></span> </li> <li id="cite_note-earth-shadow-23"><span class="mw-cite-backlink"><a href="#cite_ref-earth-shadow_23-0">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal"><span style="font-variant: small-caps;">Lynch</span>, David K.; <span style="font-variant: small-caps;">Livingston</span>, William Charles. <a rel="nofollow" class="external text" href="https://books.google.cat/books?id=4Abp5FdhskAC&pg=PA38"><i>Color and light in nature</i></a>. 2nd.  Cambridge University Press, July 2001, p. 38, 39. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-0-521-77504-5" title="Especial:Fonts bibliogràfiques/978-0-521-77504-5">ISBN 978-0-521-77504-5</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Color+and+light+in+nature&rft.aulast=Lynch&rft.aufirst=David+K.&rft.date=July+2001&rft.edition=2nd&rft.pub=Cambridge+University+Press&rft.pages=38%2C+39&rft.isbn=978-0-521-77504-5&rft_id=https%3A%2F%2Fbooks.google.cat%2Fbooks%3Fid%3D4Abp5FdhskAC%26pg%3DPA38"><span style="display: none;"> </span></span></span> </li> <li id="cite_note-24"><span class="mw-cite-backlink"><a href="#cite_ref-24">↑</a></span> <span class="reference-text"><span class="citation" style="font-style:normal"><span style="font-variant: small-caps;">Bromberg</span>, Irv. «<a rel="nofollow" class="external text" href="http://individual.utoronto.ca/kalendis/twilight/index.htm">The Duration of Twilight</a>».  <a href="/wiki/University_of_Toronto" class="mw-redirect" title="University of Toronto">University of Toronto</a>, 04-04-2011. [Consulta: 15 febrer 2012].</span></span> </li> <li id="cite_note-25"><span class="mw-cite-backlink"><a href="#cite_ref-25">↑</a></span> <span class="reference-text"><span class="citation book" style="font-style:normal" id="CITEREFSurjikov2011"><span style="font-variant: small-caps;">Surjikov</span>, S. T.. <a rel="nofollow" class="external text" href="https://www.thermopedia.com/content/956/"><i>MIE SCATTERING</i></a> (en anglès).  Begel House Inc., 2011-02-14. <span style="font-size:90%;"><a href="/wiki/DOI" title="DOI">DOI</a> <a rel="nofollow" class="external text" href="https://dx.doi.org/10.1615/atoz.m.mie_scattering">10.1615/atoz.m.mie_scattering</a></span>. <span style="font-size:90%; white-space:nowrap;"><a href="/wiki/Especial:Fonts_bibliogr%C3%A0fiques/978-1-56700-456-4" title="Especial:Fonts bibliogràfiques/978-1-56700-456-4">ISBN 978-1-56700-456-4</a></span>.</span><span class="Z3988" title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=MIE+SCATTERING&rft.aulast=Surjikov&rft.aufirst=S.+T.&rft.date=2011-02-14&rft.pub=Begel+House+Inc.&rft.isbn=978-1-56700-456-4&rft_id=info:doi/10.1615%2Fatoz.m.mie_scattering&rft_id=https%3A%2F%2Fwww.thermopedia.com%2Fcontent%2F956%2F"><span style="display: none;"> </span></span></span> </li> </ol></div></div> <div class="mw-heading mw-heading2"><h2 id="Vegeu_també"><span id="Vegeu_tamb.C3.A9"></span>Vegeu també</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Cel&action=edit&section=8" title="Modifica la secció: Vegeu també"><span>modifica</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Difusi%C3%B3_de_Mie" title="Difusió de Mie">Difusió de Mie</a></li> <li><a href="/wiki/Difusi%C3%B3_de_Rayleigh" title="Difusió de Rayleigh">Difusió de Rayleigh</a></li> <li><a href="/wiki/Longitud_d%27ona" title="Longitud d'ona">Longitud d'ona</a></li> <li><a href="/wiki/Llum" title="Llum">Llum</a></li> <li><a href="/wiki/Sol_de_mitjanit" title="Sol de mitjanit">Sol de mitjanit</a></li></ul> <table cellpadding="2" cellspacing="0" align="right" style="margin:5px; padding: 5px; border:1px solid #aaaaaa; text-align:left;" class="infobox noprint plainlinks"> <tbody><tr> <td colspan="2" style="text-align:center; font-size:85%">En altres projectes de <a href="/wiki/Fundaci%C3%B3_Wikimedia" title="Fundació Wikimedia">Wikimedia</a>: </td></tr> <tr> <td><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/Fitxer:Commons-logo.svg" class="mw-file-description" title="Commons"><img alt="Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/17px-Commons-logo.svg.png" decoding="async" width="17" height="23" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/26px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/34px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a><figcaption>Commons</figcaption></figure></td> <td><a href="https://commons.wikimedia.org/wiki/Sky" class="extiw" title="commons:Sky"><b>Commons</b></a><span style="font-size:70%;"> (Galeria)</span> <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q527?uselang=ca#sitelinks-special" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span> </td></tr> <tr> <td><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/Fitxer:Commons-logo.svg" class="mw-file-description" title="Commons"><img alt="Commons" src="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/17px-Commons-logo.svg.png" decoding="async" width="17" height="23" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/26px-Commons-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/4/4a/Commons-logo.svg/34px-Commons-logo.svg.png 2x" data-file-width="1024" data-file-height="1376" /></a><figcaption>Commons</figcaption></figure></td> <td><a href="https://commons.wikimedia.org/wiki/Category:Sky" class="extiw" title="commons:Category:Sky"><b>Commons</b></a><span style="font-size:70%;"> (Categoria)</span> <span class="penicon"><span class="mw-valign-baseline" typeof="mw:File"><a href="https://www.wikidata.org/wiki/Q527?uselang=ca#sitelinks-special" title="Modifica el valor a Wikidata"><img alt="Modifica el valor a Wikidata" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/10px-Arbcom_ru_editing.svg.png" decoding="async" width="10" height="10" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/15px-Arbcom_ru_editing.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/63/Arbcom_ru_editing.svg/20px-Arbcom_ru_editing.svg.png 2x" data-file-width="600" data-file-height="600" /></a></span></span> </td></tr> <tr> <td><figure class="mw-halign-center" typeof="mw:File"><a href="/wiki/Fitxer:Wikiquote-logo.svg" class="mw-file-description" title="Viquidites"><img alt="Viquidites" src="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/17px-Wikiquote-logo.svg.png" decoding="async" width="17" height="20" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/26px-Wikiquote-logo.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/fa/Wikiquote-logo.svg/34px-Wikiquote-logo.svg.png 2x" data-file-width="300" data-file-height="355" /></a><figcaption>Viquidites</figcaption></figure></td> <td><b><a href="https://ca.wikiquote.org/wiki/Cel" class="extiw" title="q:Cel">Viquidites</a></b> </td></tr> </tbody></table> <div role="navigation" class="navbox" aria-label="Navbox" style="padding:3px"><table class="nowraplinks hlist navbox-inner" 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