{"id":6620,"date":"2016-10-28T06:52:32","date_gmt":"2016-10-28T06:52:32","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=6620"},"modified":"2016-11-07T06:08:42","modified_gmt":"2016-11-07T06:08:42","slug":"rendez-entre-jupiter-croissant-de-lune","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/10\/28\/rendez-entre-jupiter-croissant-de-lune\/","title":{"rendered":"Rendez-vous entre Jupiter et le vieux croissant de Lune"},"content":{"rendered":"<p><strong>Nouveau spectacle c\u00e9leste pour ceux qui se sont lev\u00e9s t\u00f4t ce matin avec le rapprochement apparent entre Jupiter et un vieux croissant de Lune.\u00a0<\/strong><\/p>\n<p>Hier je vous avais pr\u00e9sent\u00e9 un <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/10\/27\/chapelet-de-lumiere-cendree-a-laube-27-octobre\/\" target=\"_blank\">chapelet de lumi\u00e8re cendr\u00e9e \u00e0 l&#8217;aube<\/a>, trois jours avant la Nouvelle Lune (ce mois d&#8217;octobre compte d&#8217;ailleurs deux nouvelles lunes, ce qui ne s&#8217;\u00e9tait pas vu depuis le mois de mars 2014). 24 heures plus tard le vieux croissant de Lune s&#8217;est encore aminci tout en se d\u00e9calant \u00e0 l&#8217;EST, ce qui le place \u00e0 proximit\u00e9 de la plus grosse plan\u00e8te du Syst\u00e8me solaire.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter2.jpg\" rel=\"lightbox[6620]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-6622\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter2-450x302.jpg\" alt=\"lune_jupiter2\" width=\"450\" height=\"302\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter2-450x302.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter2-768x515.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter2-1024x686.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter2.jpg 1343w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Bien entendu il s&#8217;agit comme \u00e0 chaque fois d&#8217;un rapprochement apparent. Notre satellite naturel se trouve \u00e0 un peu plus de 400.000 kilom\u00e8tres alors que Jupiter est \u00e0 950 millions de kilom\u00e8tres.<!--more--><\/p>\n<p>En imaginant que vous puissiez vous d\u00e9placer \u00e0 la vitesse de la lumi\u00e8re, un peu plus d&#8217;une seconde vous suffirait pour rejoindre la Lune alors qu&#8217;il vous faudrait presque une heure pour rallier la plan\u00e8te g\u00e9ante gazeuse.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter1.jpg\" rel=\"lightbox[6620]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-6621\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter1-450x300.jpg\" alt=\"lune_jupiter1\" width=\"450\" height=\"300\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter1-450x300.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter1-768x512.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter1-1024x683.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/10\/lune_jupiter1.jpg 1350w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Un troisi\u00e8me astre donne un peu plus de profondeur \u00e0 cette image. C&#8217;est l&#8217;\u00e9toile <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/06\/07\/admirateurs-mars\/\" target=\"_blank\">Porrima <\/a>ou <em>Gamma Virginis<\/em>. Situ\u00e9e dans la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/12\/24\/arp-116-un-etrange-couple-de-galaxies-dans-la-vierge\/\" target=\"_blank\">constellation de la Vierge<\/a>, cette \u00e9toile binaire de magnitude 2,7 se trouve \u00e0 pr\u00e8s de 40 ann\u00e9es-lumi\u00e8re (il faudrait donc 40 ans pour la rejoindre en voyageant \u00e0 la vitesse de la lumi\u00e8re !).<\/p>\n<p>Les images pr\u00e9sent\u00e9es ici ont \u00e9t\u00e9 r\u00e9alis\u00e9es avec un bo\u00eetier Finepix HS20 (muni d&#8217;un zoom 24-720 millim\u00e8tres) et une sensibilit\u00e9 de 100 iso.<\/p>\n<p><em>Au ras de l&#8217;horizon,\u00a0une longue lueur grise commen\u00e7ait \u00e0 s&#8217;\u00e9tendre : l&#8217;aube, avec son reflet lunaire\u00a0sur les nuages tr\u00e8s \u00e9lev\u00e9s du z\u00e9nith, \u00a0 \u00a0 \u00a0 \u00a0 <\/em><em>comme si elle allait appara\u00eetre au milieu du ciel.<\/em><\/p>\n<p>Antim\u00e9moires, 1967,\u00a0Andr\u00e9 Malraux<\/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>Nouveau spectacle c\u00e9leste pour ceux qui se sont lev\u00e9s t\u00f4t ce matin avec le rapprochement apparent entre Jupiter et un vieux croissant de Lune.\u00a0 Hier je vous avais pr\u00e9sent\u00e9 un chapelet de lumi\u00e8re cendr\u00e9e \u00e0 l&#8217;aube, trois jours avant la Nouvelle Lune (ce mois d&#8217;octobre compte d&#8217;ailleurs deux nouvelles lunes, ce qui ne s&#8217;\u00e9tait pas &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/10\/28\/rendez-entre-jupiter-croissant-de-lune\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Rendez-vous entre Jupiter et le vieux croissant de Lune<\/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":6622,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[113,131,119,90,161,118],"class_list":["post-6620","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-constellation-de-la-vierge","tag-croissant-de-lune","tag-gamma-virginis","tag-jupiter","tag-nouvelle-lune","tag-porrima"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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