{"id":4918,"date":"2016-02-03T05:43:13","date_gmt":"2016-02-03T05:43:13","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=4918"},"modified":"2016-02-10T13:25:22","modified_gmt":"2016-02-10T13:25:22","slug":"en-video-le-survol-en-couleurs-de-la-surface-de-ceres","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/02\/03\/en-video-le-survol-en-couleurs-de-la-surface-de-ceres\/","title":{"rendered":"En vid\u00e9o : le survol en couleurs de la surface de C\u00e9r\u00e8s"},"content":{"rendered":"<p><strong>La NASA vient de publier une vid\u00e9o en couleurs du survol de la plan\u00e8te naine C\u00e9r\u00e8s en utilisant les images fournies par la sonde spatiale <em>Dawn<\/em>.<\/strong><\/p>\n<p>Avec 940 km de diam\u00e8tre, <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/02\/26\/la-sonde-dawn-devoile-peu-peu-la-surface-de-ceres\/\" target=\"_blank\">C\u00e9r\u00e8s<\/a> est la plus petite plan\u00e8te naine connue. Situ\u00e9e au c\u0153ur de la ceinture d\u2019ast\u00e9ro\u00efdes, elle a \u00e9t\u00e9 d\u00e9couverte le 1er janvier 1801 par Giuseppe Piazzi.<\/p>\n<p>Apr\u00e8s avoir orbit\u00e9 autour de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/11\/22\/lasteroide-vesta-cartographie\/\" target=\"_blank\">Vesta <\/a>entre juillet 2011 et septembre 2012, la sonde <a href=\"http:\/\/dawn.jpl.nasa.gov\/\" target=\"_blank\"><em>Dawn<\/em> <\/a>(lanc\u00e9e il y a plus de huit ans) est arriv\u00e9e \u00e0 proximit\u00e9 de C\u00e9r\u00e8s au mois de mars 2015. Depuis\u00a0la mi-d\u00e9cembre \u00a0<em>Dawn<\/em> est en orbite \u00e0 sa plus courte distance (380 km), ce qui permet d&#8217;obtenir des images tr\u00e8s d\u00e9taill\u00e9es de la surface de cette plan\u00e8te naine avec une r\u00e9solution de 35 m par pixel.<\/p>\n\n<!-- iframe plugin v.5.1 wordpress.org\/plugins\/iframe\/ -->\n<iframe loading=\"lazy\" frameborder=\"0\" width=\"480\" height=\"270\" src=\"\/\/www.dailymotion.com\/embed\/video\/x3pyzjn\" 0=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p>Le film de la <a href=\"https:\/\/www.nasa.gov\/\" target=\"_blank\">NASA <\/a>pr\u00e9sente les principales formations g\u00e9ologiques visibles sur C\u00e9r\u00e8s : les crat\u00e8res Occator, <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/01\/15\/zoom-sol-fracture-dun-cratere-de-ceres\/\" target=\"_blank\">Dantu<\/a>, Yalode, Ikapati, Urvara et Haulani ainsi que\u00a0Ahuna Mons, la plus grande montagne (6 km de haut pour une base de 15 km).<\/p>\n<p><!--more-->L&#8217;accentuation des couleurs permet de mieux caract\u00e9riser la nature des mat\u00e9riaux qui recouvrent la surface de C\u00e9r\u00e8s. Le brun indique que le sol est riche en phyllosilicates, des min\u00e9raux que l&#8217;on retrouve dans les argiles. Les zones bleu\u00e2tres qui apparaissent dans les fissures et les crevasses montrent un mat\u00e9riau moins alt\u00e9r\u00e9 que la couche en surface. Quant aux d\u00e9p\u00f4ts brillants (on en a recens\u00e9 plus de 130 dont les plus lumineux tapissent le fond du crat\u00e8re Occator) ils sont probablement constitu\u00e9s de sels min\u00e9raux hydrat\u00e9s.<\/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>La NASA vient de publier une vid\u00e9o en couleurs du survol de la plan\u00e8te naine C\u00e9r\u00e8s en utilisant les images fournies par la sonde spatiale Dawn. Avec 940 km de diam\u00e8tre, C\u00e9r\u00e8s est la plus petite plan\u00e8te naine connue. Situ\u00e9e au c\u0153ur de la ceinture d\u2019ast\u00e9ro\u00efdes, elle a \u00e9t\u00e9 d\u00e9couverte le 1er janvier 1801 par &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/02\/03\/en-video-le-survol-en-couleurs-de-la-surface-de-ceres\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">En vid\u00e9o : le survol en couleurs de la surface de C\u00e9r\u00e8s<\/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":4919,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[1484,551,549,1449,1483,1481,1479,627,1482,1013,1480],"class_list":["post-4918","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-ahuna-mons","tag-ceinture-dasteroides","tag-ceres","tag-cratere-dantu","tag-haulani","tag-ikapati","tag-occator","tag-planete-naine","tag-urvara","tag-video","tag-yalode"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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