{"id":7163,"date":"2017-02-06T17:09:13","date_gmt":"2017-02-06T17:09:13","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=7163"},"modified":"2017-02-15T10:30:53","modified_gmt":"2017-02-15T10:30:53","slug":"le-soleil-se-couche-sur-le-desert-datacama","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/02\/06\/le-soleil-se-couche-sur-le-desert-datacama\/","title":{"rendered":"Le Soleil se couche sur le d\u00e9sert d&#8217;Atacama"},"content":{"rendered":"<p><strong>Le photographe Yuri Beletsky, un des ambassadeurs de l&#8217;ESO, a saisi cet incroyable coucher de Soleil depuis le d\u00e9sert d&#8217;Atacama au Chili.<\/strong><\/p>\n<p>Situ\u00e9 dans les Andes chiliennes, le d\u00e9sert d&#8217;Atacama est une zone particuli\u00e8rement aride (\u00e0 certains endroits il tombe moins d\u2019un millim\u00e8tre de pluie par an !). C&#8217;est ce site qu&#8217;a retenu l\u2019<a href=\"https:\/\/www.eso.org\/public\/france\/\" target=\"_blank\">ESO<\/a>\u00a0pour y implanter depuis quelques d\u00e9cennies ses t\u00e9lescopes parmi les plus performants au monde. Sous un ciel exempt de toute <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/06\/28\/pollution-lumineuse\/\" target=\"_blank\">pollution lumineuse<\/a> o\u00f9 seul l\u2019<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/12\/31\/en-video-lairglow-letrange-lumiere-du-ciel-nocturne\/\" target=\"_blank\">airglow<\/a> peut att\u00e9nuer l\u2019\u00e9clat des \u00e9toiles, les <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/12\/14\/lumiere-rouge-les-astronomes\/\" target=\"_blank\">astronomes <\/a>disposent d\u2019instruments gigantesques pour sonder l\u2019Univers dans toutes les longueurs d\u2019ondes.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/01\/soleil_atacama.jpg\" rel=\"lightbox[7163]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-7164\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/01\/soleil_atacama-450x301.jpg\" alt=\"\" width=\"450\" height=\"301\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/01\/soleil_atacama-450x301.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/01\/soleil_atacama-768x514.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2017\/01\/soleil_atacama.jpg 960w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Mais si le ciel nocturne est particuli\u00e8rement pur, la journ\u00e9e peut aussi r\u00e9server de belles surprises comme en t\u00e9moigne cette image d&#8217;un <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/11\/09\/coucher-de-soleil-derriere-lobservatoire-du-pic-du-midi\/\" target=\"_blank\">coucher de Soleil<\/a>.<!--more--><\/p>\n<p><a href=\"https:\/\/500px.com\/ybeletsky\" target=\"_blank\">Yuri Beletsky<\/a> est un des ambassadeurs de l&#8217;ESO : tout comme \u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/01\/14\/petroglyphes-sous-les-etoiles-dans-le-desert-datacama\/\" target=\"_blank\">Babak Tafreshi<\/a>, <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/10\/28\/en-video-le-centre-galactique-passe-au-zenith-du-vlt\/\" target=\"_blank\">St\u00e9phane Guisard<\/a>,\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/03\/06\/en-video-le-ciel-etoile-de-la-reserve-portugaise-dalqueva\/\" target=\"_blank\">Miguel Claro<\/a>, <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/01\/09\/les-beautes-du-ciel-nocturne-dans-le-desert-du-kalahari\/\" target=\"_blank\">Petr Hor\u00e1lek<\/a>\u00a0ou encore\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/01\/12\/file-detoiles-crepuscule-lobservatoire-de-silla\/\" target=\"_blank\">Roger Wesson<\/a>, il\u00a0r\u00e9alise des images destin\u00e9es \u00e0 mettre en valeur les diff\u00e9rents sites astronomiques de l\u2019Observatoire Europ\u00e9en Austral et les recherches qui y sont men\u00e9es.<\/p>\n<p>Pourquoi le Soleil couchant photographi\u00e9 par Yuri Beletsky montre-t-il ces curieuses rayures horizontales ? Encore une fois c\u2019est l\u2019atmosph\u00e8re terrestre qui nous joue des tours. Il faut imaginer cette atmosph\u00e8re comme un empilement de couches d\u2019air aux propri\u00e9t\u00e9s diff\u00e9rentes (temp\u00e9rature, pression, humidit\u00e9). Ces diff\u00e9rentes couches sont parfaitement mises en \u00e9vidence sur ce clich\u00e9 (j&#8217;avais moi m\u00eame eu l&#8217;occasion de photographier des\u00a0<a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/11\/23\/franges-solaires\/\" target=\"_blank\">franges solaires<\/a>\u00a0en Bourgogne \u00e0 l\u2019occasion d\u2019un lever de Soleil hivernal).<\/p>\n<p>N\u2019h\u00e9sitez pas \u00e0 faire un tour dans la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/02\/22\/en-images-les-phenomenes-lumineux-atmospheriques\/\" target=\"_blank\">galerie des ph\u00e9nom\u00e8nes lumineux atmosph\u00e9riques<\/a> qui vous r\u00e9serve d&#8217;autres surprises : nuages, iris\u00e9s, rayon vert, halos, aurores bor\u00e9ales&#8230; il y en a pour tous les go\u00fbts !<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content -->","protected":false},"excerpt":{"rendered":"<p>Le photographe Yuri Beletsky, un des ambassadeurs de l&#8217;ESO, a saisi cet incroyable coucher de Soleil depuis le d\u00e9sert d&#8217;Atacama au Chili. Situ\u00e9 dans les Andes chiliennes, le d\u00e9sert d&#8217;Atacama est une zone particuli\u00e8rement aride (\u00e0 certains endroits il tombe moins d\u2019un millim\u00e8tre de pluie par an !). C&#8217;est ce site qu&#8217;a retenu l\u2019ESO\u00a0pour y &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2017\/02\/06\/le-soleil-se-couche-sur-le-desert-datacama\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Le Soleil se couche sur le d\u00e9sert d&#8217;Atacama<\/span>  <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":8,"featured_media":7165,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[634,633,2032,1016],"class_list":["post-7163","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-desert-datacama","tag-eso","tag-franges-solaires","tag-yuri-beletsky"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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