{"id":418,"date":"2015-10-23T19:29:09","date_gmt":"2015-10-23T19:29:09","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/frankel\/?p=418"},"modified":"2016-10-19T22:27:50","modified_gmt":"2016-10-19T22:27:50","slug":"leurope-se-posera-oxia-planum","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/frankel\/2015\/10\/23\/leurope-se-posera-oxia-planum\/","title":{"rendered":"L’Europe se posera sur Oxia Planum"},"content":{"rendered":"
\"Les<\/a>
Les ellipses d’atterrissage de la sonde Exomars dans Oxia lanum<\/figcaption><\/figure>\n

L\u2019Europe s\u2019appr\u00eate \u00e0 poser un rover scientifique sur Mars en 2018, le robot ExoMars, dans un ambitieux projet men\u00e9 en collaboration avec la Russie (Rovcosmos). Les partenaires viennent de choisir le site d\u2019atterrissage : il s\u2019agit d\u2019Oxia Planum, un site \u00e9quatorial riche en argiles et autres min\u00e9raux indicatifs d\u2019une longue pr\u00e9sence autrefois d\u2019eau liquide. Le site, \u00e0 mi-chemin entre ceux de Viking 1 et Pathfinder \u00e0 l\u2019ouest, et d\u2019Opportunity au sud-est, est travers\u00e9 par des chenaux sinueux et un ancien delta.<\/p>\n

\"Vue<\/a>
Vue d’artiste de la sonde europ\u00e9eenne ExoMars (ESA)<\/figcaption><\/figure>\n

D\u2019une masse de 310 kg, le rover europ\u00e9en ExoMars se posera en janvier 2019, gr\u00e2ce \u00e0 un module de descente russe. Il sera muni de 9 instruments scientifiques, dont certains serviront \u00e0 chercher d\u2019\u00e9ventuelles traces de vie, et d\u2019une foreuse pour recueillir des \u00e9chantillons jusqu\u2019\u00e0 deux m\u00e8tres de profondeur.
\nLa s\u00e9lection du site d\u2019atterrissage, d\u00e9but\u00e9e en d\u00e9cembre 2013, est pass\u00e9e par une premi\u00e8re phase : quatre \u00ab demi-finalistes \u00bb retenus en octobre 2014, avec la pr\u00e9s\u00e9lection d\u2019Aram Dorsum, Hypanis Vallis, Mawrth Vallis et Oxia Planum, tous situ\u00e9s dans le bassin au d\u00e9bouch\u00e9 de Valles Marineris et des grands chenaux d\u2019inondation qui descendent des hauts plateaux.<\/p>\n

\"Les<\/a>
Les quatre sites retenus pour ExoMars, avec comme leader actuel Oxia Planum<\/figcaption><\/figure>\n

Toutefois, si le d\u00e9collage d\u2019ExoMars est repouss\u00e9 de 2018 \u00e0 2020\u2014ce qui est plus que probable\u2014alors les autres demi-finalistes entreront \u00e0 nouveau en piste comme challengers d\u2019Oxia Planum et remettront en cause cette premi\u00e8re s\u00e9lection.<\/p>\n","protected":false},"excerpt":{"rendered":"

L\u2019Europe s\u2019appr\u00eate \u00e0 poser un rover scientifique sur Mars en 2018, le robot ExoMars, dans un ambitieux projet men\u00e9 en collaboration avec la Russie (Rovcosmos). Les partenaires viennent de choisir le site d\u2019atterrissage : il s\u2019agit d\u2019Oxia Planum, un site \u00e9quatorial riche en argiles et autres min\u00e9raux indicatifs d\u2019une longue pr\u00e9sence autrefois d\u2019eau liquide. Le … Continuer la lecture de L’Europe se posera sur Oxia Planum<\/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-418","post","type-post","status-publish","format-standard","hentry","category-actualites","category-sciences"],"yoast_head":"\nExoMars se posera sur Oxia Planum (blog de Charles Frankel)<\/title>\n<meta name=\"description\" content=\"Le site d'Oxia Planum, o\u00f9 convergent de nombreux chenaux d'inondation, a \u00e9t\u00e9 retenu comme site d'atterrissage de la sonde ExoMars en 2019.\" \/>\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\/2015\/10\/23\/leurope-se-posera-oxia-planum\/\" \/>\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=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2015\/10\/23\/leurope-se-posera-oxia-planum\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2015\/10\/23\/leurope-se-posera-oxia-planum\/\",\"name\":\"ExoMars se posera sur Oxia Planum (blog de Charles Frankel)\",\"isPartOf\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2015\/10\/23\/leurope-se-posera-oxia-planum\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2015\/10\/23\/leurope-se-posera-oxia-planum\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2015\/10\/Oxia_Planum-104-x-19-km.jpg\",\"datePublished\":\"2015-10-23T19:29:09+00:00\",\"dateModified\":\"2016-10-19T22:27:50+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/#\/schema\/person\/c6bf521c6d19bf22fb19fb2b3d6fcf63\"},\"description\":\"Le site d'Oxia Planum, o\u00f9 convergent de nombreux chenaux d'inondation, a \u00e9t\u00e9 retenu comme site d'atterrissage de la sonde ExoMars en 2019.\",\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/frankel\/2015\/10\/23\/leurope-se-posera-oxia-planum\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2015\/10\/23\/leurope-se-posera-oxia-planum\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2015\/10\/Oxia_Planum-104-x-19-km.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2015\/10\/Oxia_Planum-104-x-19-km.jpg\",\"width\":700,\"height\":633,\"caption\":\"Les ellipses d'atterrissage de la sonde Exomars dans Oxia lanum\"},{\"@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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