{"id":808,"date":"2018-12-18T09:26:47","date_gmt":"2018-12-18T09:26:47","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/frankel\/?p=808"},"modified":"2019-02-13T10:11:17","modified_gmt":"2019-02-13T10:11:17","slug":"et-pendant-ce-temps-la-curiosity","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/12\/18\/et-pendant-ce-temps-la-curiosity\/","title":{"rendered":"Et pendant ce temps l\u00e0, Curiosity…"},"content":{"rendered":"

Alors que la sonde InSight a atterri avec succ\u00e8s le 26 novembre dans les plaines martiennes d\u2019Elysium, il ne faut pas oublier notre vaillante automobile en activit\u00e9 sur la plan\u00e8te depuis plus de 6 ans maintenant\u00a0: Curiosity (MSL) qui se trouve dans le crat\u00e8re Gale, \u00e0 550\u00a0km seulement du nouvel arrivant.<\/p>\n

Il faut aussi tirer un grand coup de chapeau \u00e0 une autre automobile qui a rendu peut-\u00eatre son dernier soupir, de l\u2019autre c\u00f4t\u00e9 de la plan\u00e8te\u00a0: le rover Opportunity (MER), \u00e0 poste depuis plus de 15 ans dans les plaines de Terra Meridiani. La temp\u00eate de poussi\u00e8re de cet \u00e9t\u00e9 a tant obscurci ses panneaux solaires qu\u2019\u00e0 court d\u2019\u00e9lectricit\u00e9, elle s\u2019est mise en hibernation. Son dernier signe de vie date du 10 juin. Il est \u00e0 craindre que sur les pentes du crat\u00e8re Endeavour qu\u2019elle a tant explor\u00e9, la vaillante automobile a fini par s\u2019\u00e9teindre. Mais 15 ans d\u2019exploration\u00a0: quel triomphe\u00a0!<\/p>\n

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Le magnifique sol martien du crat\u00e8re Gale, aux myst\u00e9rieux min\u00e9raux sombres, photographi\u00e9 le 1er novembre par Curiosity.<\/figcaption><\/figure>\n

Quant \u00e0 Curiosity, elle est aliment\u00e9e par un g\u00e9n\u00e9rateur radioisotopique (conversion de la chaleur d\u2019une barre radioactive en \u00e9lectricit\u00e9), donc elle ne craint pas l\u2019obscurcissement des cieux et peut fonctionner hiver comme \u00e9t\u00e9. Elle n\u2019a pas \u00e9t\u00e9 \u00e9pargn\u00e9e par les soucis, n\u00e9anmoins, le dernier en date ayant \u00e9t\u00e9 une m\u00e9moire d\u00e9fectueuse de son ordinateur, incapable d\u2019accumuler les donn\u00e9es scientifiques et techniques. Les ing\u00e9nieurs ont donc bascul\u00e9 de l\u2019ordinateur B \u00e0 l\u2019ordinateur A (les deux \u00e9tant redondants), et tout est rentr\u00e9 dans l\u2019ordre. Curiosity vient d\u2019atteindre une strate rocheuse baptis\u00e9e Red Jura, sur le flanc de la cr\u00eate Vera Rubin que le robot explore depuis plusieurs mois\u00a0: une cr\u00eate riche en h\u00e9matite (un oxyde de fer) qui repr\u00e9sente, tout comme les strates pr\u00e9c\u00e9dentes, les s\u00e9diments d\u00e9pos\u00e9s au fond du lac qui a occup\u00e9 le crat\u00e8re Gale, il y a plus de 3 milliards d\u2019ann\u00e9es. Prochain objectif\u00a0: des argiles en amont des couches \u00e0 h\u00e9matite (et donc en principe plus jeunes), sur lesquelles l\u2019automobile roulera en s\u2019approchant de la base d\u2019Aeolis Mons\u2014le massif au centre du crat\u00e8re\u2026<\/p>\n

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Une taupini\u00e8re sur Mars ? Non, les rognures du carottage effectu\u00e9 sur Grey Jura, l’une des strates de la cr\u00eate rocheuse Vera Rubin, o\u00f9 officie Curiosity.<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Alors que la sonde InSight a atterri avec succ\u00e8s le 26 novembre dans les plaines martiennes d\u2019Elysium, il ne faut pas oublier notre vaillante automobile en activit\u00e9 sur la plan\u00e8te depuis plus de 6 ans maintenant\u00a0: Curiosity (MSL) qui se trouve dans le crat\u00e8re Gale, \u00e0 550\u00a0km seulement du nouvel arrivant. Il faut aussi tirer … Continuer la lecture de Et pendant ce temps l\u00e0, Curiosity…<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[13,4],"tags":[],"class_list":["post-808","post","type-post","status-publish","format-standard","hentry","category-actualites","category-sciences"],"yoast_head":"\nEt pendant ce temps l\u00e0, Curiosity... - Carnets de bord d\u2019un martien, le blog de Charles FRANKEL, g\u00e9ologue<\/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\/frankel\/2018\/12\/18\/et-pendant-ce-temps-la-curiosity\/\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Charles Frankel\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/12\/18\/et-pendant-ce-temps-la-curiosity\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/12\/18\/et-pendant-ce-temps-la-curiosity\/\",\"name\":\"Et pendant ce temps l\u00e0, Curiosity... - Carnets de bord d\u2019un martien, le blog de Charles FRANKEL, g\u00e9ologue\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/12\/18\/et-pendant-ce-temps-la-curiosity\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/12\/18\/et-pendant-ce-temps-la-curiosity\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2018\/12\/Grange-sol-2217.jpg\",\"datePublished\":\"2018-12-18T09:26:47+00:00\",\"dateModified\":\"2019-02-13T10:11:17+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/#\/schema\/person\/c6bf521c6d19bf22fb19fb2b3d6fcf63\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/12\/18\/et-pendant-ce-temps-la-curiosity\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/12\/18\/et-pendant-ce-temps-la-curiosity\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2018\/12\/Grange-sol-2217.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2018\/12\/Grange-sol-2217.jpg\",\"width\":1184,\"height\":1184,\"caption\":\"Le magnifique sol martien du crat\u00e8re Gale, aux myst\u00e9rieux min\u00e9raux sombres, photographi\u00e9 le 1er novembre par Curiosity.\"},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/#website\",\"url\":\"https:\/\/blogs.futura-sciences.com\/frankel\/\",\"name\":\"Carnets de bord d\u2019un martien, le blog de Charles FRANKEL, g\u00e9ologue\",\"description\":\"La science ? 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