{"id":5576,"date":"2016-05-03T13:19:21","date_gmt":"2016-05-03T13:19:21","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=5576"},"modified":"2016-05-12T15:25:34","modified_gmt":"2016-05-12T15:25:34","slug":"insolite-satellite-phobos-surface-de-mars","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/05\/03\/insolite-satellite-phobos-surface-de-mars\/","title":{"rendered":"Insolite : le satellite Phobos vu depuis la surface de Mars"},"content":{"rendered":"<p><strong>\u00c0 quoi ressemble Phobos, l&#8217;une des deux lunes martiennes, vue depuis la Plan\u00e8te rouge ? R\u00e9ponse avec cette image prise par le rover <em>Curiosity<\/em>. \u00a0<\/strong><\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/02\/15\/insolite-le-rover-martien-curiosity-vu-par-lorbiteur-mro\/\" target=\"_blank\"><em>Curiosity<\/em>\u00a0<\/a>arpente la surface de Mars depuis bient\u00f4t 4 ans ; le rover am\u00e9ricain explore les contreforts du mont Sharp (un empilement de couches s\u00e9dimentaires qui culmine \u00e0 5.500 m) situ\u00e9 au centre du <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2014\/12\/15\/le-cratere-gale-sur-mars-est-un-ancien-lac\/\" target=\"_blank\">crat\u00e8re Gale<\/a> (150 km de diam\u00e8tre), une r\u00e9gion dont on sait maintenant qu&#8217;elle\u00a0a conserv\u00e9 des traces de l\u2019habitabilit\u00e9 pass\u00e9e de la Plan\u00e8te rouge.<\/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\/x12rrbk\" 0=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p style=\"text-align: center\"><strong>En vid\u00e9o : une ann\u00e9e sur Mars pour Curiosity<\/strong><\/p>\n<p>D\u00e9couvert par l\u2019astronome am\u00e9ricain Asaph Hall le 18 ao\u00fbt 1877 \u00e0 l\u2019aide d\u2019une <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/05\/05\/bien-choisir-sa-premiere-lunette-astronomique\/\" target=\"_blank\">lunette astronomique<\/a> de 66 cm de diam\u00e8tre,\u00a0Phobos, un astre tr\u00e8s irr\u00e9gulier de 27X22X19 km, est le plus grand des deux satellites de Mars, l\u2019autre \u00e9tant Deimos. Phobos est recouvert comme la <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/04\/19\/clair-de-lune-pont-arvaux\/\" target=\"_blank\">Lune <\/a>d&#8217;un \u00e9pais manteau de r\u00e9golithe, une couche de poussi\u00e8re qui r\u00e9sulte du bombardement m\u00e9t\u00e9oritique.<!--more--><\/p>\n<p>L&#8217;an pass\u00e9 la sonde indienne <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/06\/14\/phobos-saisi-a-contre-jour-par-la-sonde-martienne-mom\/\" target=\"_blank\">MOM\u00a0<\/a>(<em>Mars Orbiter Mission<\/em>) avait photographi\u00e9 Phobos \u00e0 contre-jour depuis son orbite, mais \u00e0 quoi ressemble vu du sol ce satellite qui met un peu plus de 7 h 30 pour faire le tour de la Plan\u00e8te rouge ?<\/p>\n<p><a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/mars.jpg\"  rel=\"lightbox[5576] attachment wp-att-5578\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-5578\" src=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/mars-360x450.jpg\" alt=\"mars\" width=\"360\" height=\"450\" srcset=\"https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/mars-360x450.jpg 360w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/mars-768x960.jpg 768w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/mars-819x1024.jpg 819w, https:\/\/blogs.futura-sciences.com\/feldmann\/wp-content\/uploads\/sites\/9\/2016\/04\/mars.jpg 1304w\" sizes=\"auto, (max-width: 360px) 100vw, 360px\" \/><\/a><\/p>\n<p>C&#8217;est \u00e0 cette question qu&#8217;a tent\u00e9 de r\u00e9pondre <a href=\"https:\/\/www.flickr.com\/photos\/132160802@N06\/25946493843\/\" target=\"_blank\">Justin Cowart<\/a>\u00a0en r\u00e9alisant le montage ci-dessus qui combine plusieurs photographies obtenues avec la cam\u00e9ra <a href=\"http:\/\/mars.nasa.gov\/msl\/mission\/instruments\/cameras\/mastcam\/\" target=\"_blank\">Mastcam <\/a>qui \u00e9quipe le rover<em> Curiosity<\/em> (on distingue au fond les pentes du mont Sharp).<\/p>\n<p>Dans 20 \u00e0 40 millions d&#8217;ann\u00e9es Phobos aura \u00e9t\u00e9 d\u00e9truit par les forces de mar\u00e9e de la Plan\u00e8te rouge : les morceaux du satellite bris\u00e9 formeront peut-\u00eatre des anneaux pendant quelques dizaines de millions d&#8217;ann\u00e9es avant de tomber sur Mars.<\/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>\u00c0 quoi ressemble Phobos, l&#8217;une des deux lunes martiennes, vue depuis la Plan\u00e8te rouge ? R\u00e9ponse avec cette image prise par le rover Curiosity. \u00a0 Curiosity\u00a0arpente la surface de Mars depuis bient\u00f4t 4 ans ; le rover am\u00e9ricain explore les contreforts du mont Sharp (un empilement de couches s\u00e9dimentaires qui culmine \u00e0 5.500 m) situ\u00e9 &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/05\/03\/insolite-satellite-phobos-surface-de-mars\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">Insolite : le satellite Phobos vu depuis la surface de Mars<\/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":5577,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[86],"tags":[659,1082,1611,660,1081,678],"class_list":["post-5576","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-soleil-et-planetes","tag-cratere-gale","tag-deimos","tag-justin-cowart","tag-mont-sharp","tag-phobos","tag-rover-curiosity"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Insolite : le satellite Phobos vu depuis la surface de Mars<\/title>\n<meta name=\"description\" content=\"\u00c0 quoi ressemble Phobos, l&#039;une des deux lunes martiennes, vue depuis la Plan\u00e8te rouge ? 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