{"id":1775,"date":"2015-02-15T09:56:17","date_gmt":"2015-02-15T09:56:17","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=1775"},"modified":"2016-02-07T08:45:43","modified_gmt":"2016-02-07T08:45:43","slug":"lorbiteur-mro-revele-un-etonnant-cratere-martien","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/02\/15\/lorbiteur-mro-revele-un-etonnant-cratere-martien\/","title":{"rendered":"L&#8217;orbiteur MRO r\u00e9v\u00e8le un \u00e9tonnant crat\u00e8re martien"},"content":{"rendered":"<p>La cam\u00e9ra HiRISE de <a title=\"MRO\" href=\"http:\/\/mars.jpl.nasa.gov\/mro\/\" target=\"_blank\"><em>Mars Reconnaissance Orbiter<\/em><\/a> a d\u00e9nich\u00e9 une \u00e9trange formation sur la <a title=\"Opportunity\u00a0: 11 ans sur la plan\u00e8te Mars !\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/01\/26\/opportunity-11-ans-sur-la-planete-mars\/\" target=\"_blank\">Plan\u00e8te rouge<\/a>. Il s&#8217;agit d&#8217;une d\u00e9pression allong\u00e9e situ\u00e9e dans la r\u00e9gion de <em>Elysium Planitia<\/em>, une zone volcanique au niveau de l&#8217;\u00e9quateur.<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/01\/mars-cratere.jpg\" rel=\"lightbox[1775]\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1776\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/01\/mars-cratere-450x337.jpg\" alt=\"mars-cratere\" width=\"450\" height=\"337\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/01\/mars-cratere-450x337.jpg 450w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/01\/mars-cratere-1024x767.jpg 1024w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2015\/01\/mars-cratere.jpg 1200w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>Les chercheurs de la NASA charg\u00e9s d&#8217;analyser les images de MRO (une sonde en orbite autour de la plan\u00e8te <a title=\"On a retrouv\u00e9 Beagle 2 sur Mars\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/01\/23\/retrouve-beagle-2-sur-mars\/\" target=\"_blank\">Mars <\/a>depuis le printemps 2006) n&#8217;ont pas mis longtemps pour proposer une explication \u00e0 cette \u00e9trange formation.<\/p>\n<p><!--more-->Selon eux l&#8217;excavation allong\u00e9e (en r\u00e9alit\u00e9 trois crat\u00e8res qui se chevauchent l\u00e9g\u00e8rement) ne peut \u00eatre que le r\u00e9sultat de la chute d&#8217;un <a title=\"L\u2019ast\u00e9ro\u00efde Vesta cartographi\u00e9\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/11\/22\/lasteroide-vesta-cartographie\/\" target=\"_blank\">ast\u00e9ro\u00efde <\/a>double ou triple (dans le cas d&#8217;un ast\u00e9ro\u00efde double, l&#8217;un des deux blocs se serait bris\u00e9 lors de l&#8217;impact, lib\u00e9rant un troisi\u00e8me morceau plus petit).<\/p>\n<p>Les deux crat\u00e8res principaux ont \u00e9t\u00e9 creus\u00e9s par des <a title=\"Cabu, Charb, Tignous et Wolinski, des noms d\u2019ast\u00e9ro\u00efdes\u00a0?\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/01\/16\/cabu-charb-tignous-et-wolinski-des-noms-asteroides\/\" target=\"_blank\">ast\u00e9ro\u00efdes <\/a>sensiblement identiques de quelques centaines de m\u00e8tres de diam\u00e8tre. La pr\u00e9sence d&#8217;ast\u00e9ro\u00efdes accompagn\u00e9s d&#8217;une ou deux lunes est assez courante dans le Syst\u00e8me solaire, comme l&#8217;a montr\u00e9 r\u00e9cemment l\u2019<a title=\"Une lune pour l\u2019ast\u00e9ro\u00efde 2004 BL86\u00a0!\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/01\/27\/une-lune-pour-lasteroide-2004-bl86\/\" target=\"_blank\">ast\u00e9ro\u00efde 2004 BL86<\/a>.<\/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 cam\u00e9ra HiRISE de Mars Reconnaissance Orbiter a d\u00e9nich\u00e9 une \u00e9trange formation sur la Plan\u00e8te rouge. Il s&#8217;agit d&#8217;une d\u00e9pression allong\u00e9e situ\u00e9e dans la r\u00e9gion de Elysium Planitia, une zone volcanique au niveau de l&#8217;\u00e9quateur. Les chercheurs de la NASA charg\u00e9s d&#8217;analyser les images de MRO (une sonde en orbite autour de la plan\u00e8te Mars &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/02\/15\/lorbiteur-mro-revele-un-etonnant-cratere-martien\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">L&#8217;orbiteur MRO r\u00e9v\u00e8le un \u00e9tonnant crat\u00e8re martien<\/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":1776,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[509],"tags":[240,798,108,818,770,116,771,486,115,160],"class_list":["post-1775","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","tag-asteroide","tag-asteroide-2004-bl86","tag-cratere","tag-elysium-planitia","tag-hirise","tag-mars","tag-mro","tag-nasa","tag-planete-rouge","tag-systeme-solaire"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>L&#039;orbiteur MRO r\u00e9v\u00e8le un \u00e9tonnant crat\u00e8re martien<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/02\/15\/lorbiteur-mro-revele-un-etonnant-cratere-martien\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L&#039;orbiteur MRO r\u00e9v\u00e8le un \u00e9tonnant crat\u00e8re martien\" \/>\n<meta property=\"og:description\" content=\"La cam\u00e9ra HiRISE de Mars Reconnaissance Orbiter a d\u00e9nich\u00e9 une \u00e9trange formation sur la Plan\u00e8te rouge. 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