{"id":6283,"date":"2016-08-30T06:07:11","date_gmt":"2016-08-30T06:07:11","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=6283"},"modified":"2016-09-12T18:55:21","modified_gmt":"2016-09-12T18:55:21","slug":"la-lumiere-cendree-sous-tension-a-laube-du-30-aout","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/08\/30\/la-lumiere-cendree-sous-tension-a-laube-du-30-aout\/","title":{"rendered":"La lumi\u00e8re cendr\u00e9e sous tension \u00e0 l&#8217;aube du 30 ao\u00fbt"},"content":{"rendered":"<p><strong>Petite session de rattrapage si vous n&#8217;avez pas eu la chance d&#8217;admirer la lumi\u00e8re cendr\u00e9e dans les premi\u00e8res heures du mardi 30 ao\u00fbt.<\/strong><\/p>\n<p>Avez-vous d\u00e9j\u00e0 entendu parler de la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/05\/12\/en-images-lumiere-cendree\/\" target=\"_blank\">lumi\u00e8re cendr\u00e9e <\/a>? Cette douce clart\u00e9, environ 10 000 fois plus faible que la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/07\/02\/en-juillet-la-pleine-lune-se-levera-deux-fois\/\" target=\"_blank\">Pleine Lune<\/a>, permet de distinguer le reste du disque lunaire juste avant ou apr\u00e8s la Nouvelle Lune, quand le croissant est assez fin pour ne pas trop nous \u00e9blouir. Vous retrouverez quelques images de lumi\u00e8re cendr\u00e9e dans le diaporama ci-dessous.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" src=\"https:\/\/player.vimeo.com\/video\/134736291\" width=\"640\" height=\"480\" frameborder=\"0\" 0=\"webkitallowfullscreen\" 1=\"mozallowfullscreen\" 2=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p>Alors que le croissant re\u00e7oit directement les rayons solaires, le reste du disque lunaire est tr\u00e8s l\u00e9g\u00e8rement \u00e9clair\u00e9 par la lumi\u00e8re solaire que la Terre renvoie dans l\u2019espace (les oc\u00e9ans et les nuages terrestres jouent un peu un r\u00f4le de miroir). Le disque lunaire semble gris clair comme de la cendre, ce qui explique le nom de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/12\/24\/derniere-lumiere-cendree-de-lannee\/\" target=\"_blank\">lumi\u00e8re cendr\u00e9e<\/a>.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/cendree.jpg\" rel=\"lightbox[6283]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-6284\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/cendree-450x301.jpg\" alt=\"cendree\" width=\"450\" height=\"301\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/cendree-450x301.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/cendree-768x514.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/cendree-1024x686.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/08\/cendree.jpg 1344w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>La lumi\u00e8re cendr\u00e9e ou clair de Terre n\u2019est jamais aussi belle que 2 ou 3 jours avant la Nouvelle Lune \u00e0 l&#8217;aube (voir l&#8217;image ci-dessus) mais on peut aussi l&#8217;admirer le soir juste apr\u00e8s la Nouvelle Lune comme l&#8217;a montr\u00e9 l\u2019astrophysicien am\u00e9ricain Fred Espenak dans une superbe vid\u00e9o (voir <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/09\/17\/en-video-un-saisissant-coucher-de-lumiere-cendree\/\" target=\"_blank\">un saisissant coucher de lumi\u00e8re cendr\u00e9e<\/a>). <!--more--><\/p>\n<p>Ce matin nous \u00e9tions 48 heures avant la Nouvelle Lune qui se produira le premier jour du mois de septembre. Une Nouvelle Lune qui co\u00efncidera avec une \u00e9clipse annulaire de Soleil visible depuis l&#8217;\u00eele de la R\u00e9union, un ph\u00e9nom\u00e8ne spectaculaire que je vous pr\u00e9senterai demain sur le blog !<\/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>Petite session de rattrapage si vous n&#8217;avez pas eu la chance d&#8217;admirer la lumi\u00e8re cendr\u00e9e dans les premi\u00e8res heures du mardi 30 ao\u00fbt. Avez-vous d\u00e9j\u00e0 entendu parler de la lumi\u00e8re cendr\u00e9e ? Cette douce clart\u00e9, environ 10 000 fois plus faible que la Pleine Lune, permet de distinguer le reste du disque lunaire juste avant &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/08\/30\/la-lumiere-cendree-sous-tension-a-laube-du-30-aout\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">La lumi\u00e8re cendr\u00e9e sous tension \u00e0 l&#8217;aube du 30 ao\u00fbt<\/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":6284,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[83],"tags":[978,88,161],"class_list":["post-6283","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-la-lune","tag-clair-de-terre","tag-lumiere-cendree","tag-nouvelle-lune"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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