{"id":5345,"date":"2016-03-30T11:25:18","date_gmt":"2016-03-30T11:25:18","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/feldmann\/?p=5345"},"modified":"2016-04-07T16:20:21","modified_gmt":"2016-04-07T16:20:21","slug":"en-video-le-voyage-de-la-sonde-exomars","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/03\/30\/en-video-le-voyage-de-la-sonde-exomars\/","title":{"rendered":"En vid\u00e9o : le voyage de la sonde ExoMars"},"content":{"rendered":"<p><strong>Lanc\u00e9e le 14 mars de Ba\u00efkonour au Kazakhstan, la sonde europ\u00e9enne ExoMars arrivera en vue de la Plan\u00e8te rouge au mois d&#8217;octobre prochain.<\/strong><\/p>\n<p>Avec ExoMars, l&#8217;Agence spatiale europ\u00e9enne s&#8217;est fix\u00e9e un objectif ambitieux : r\u00e9aliser son premier atterrissage sur la Plan\u00e8te rouge. Elle a pour cela con\u00e7u un module de d\u00e9monstration d&#8217;entr\u00e9e, de descente et d\u2019atterrissage surnomm\u00e9 <a href=\"http:\/\/exploration.esa.int\/mars\/47852-entry-descent-and-landing-demonstrator-module\/\" target=\"_blank\">Schiaparelli<\/a>,\u00a0 en hommage \u00e0 l&#8217;astronome italien Giovanni Schiaparelli qui fut un observateur assidu de la quatri\u00e8me plan\u00e8te du Syst\u00e8me solaire \u00e0 la fin du XIX \u00e8me si\u00e8cle.<\/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\/x3svyxt\" 0=\"allowfullscreen&gt;&lt;\/iframe\" scrolling=\"yes\" class=\"iframe-class\"><\/iframe>\n\n<p>Pendant 7 mois le module Schiaparelli va voyager \u00e0 bord de l\u2019orbiteur <a href=\"http:\/\/exploration.esa.int\/mars\/46475-trace-gas-orbiter\/\" target=\"_blank\">TGO<\/a> (<em>Trace Gas Orbiter<\/em>) avant d&#8217;\u00eatre largu\u00e9 le 16 octobre prochain. Puis ce sera une chute vertigineuse (film\u00e9e \u00e0 l&#8217;aide d&#8217;une cam\u00e9ra plac\u00e9e \u00e0 bord du module) :\u00a0\u00a0Schiaparelli p\u00e9n\u00e9trera dans l&#8217;atmosph\u00e8re martienne \u00e0 la vitesse de 21.000 km\/h et sera frein\u00e9 peu \u00e0 peu jusqu&#8217;\u00e0 une vitesse finale de 4 km\/h quand s&#8217;\u00e9teindront les r\u00e9trofus\u00e9es.<\/p>\n<p><!--more--><\/p>\n<p>L&#8217;atterrisseur europ\u00e9en se posera dans <em>Meridiani Planum<\/em> comme l&#8217;avait fait en 2004 le rover am\u00e9ricain <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2015\/07\/17\/en-video-11-ans-sur-mars-pour-le-rover-opportunity\/\" target=\"_blank\">Opportunity<\/a>. Le site n&#8217;est sans doute pas le plus prometteur mais il est proche de l&#8217;\u00e9quateur martien, l\u00e0 o\u00f9 l&#8217;atmosph\u00e8re est la plus dense et la plus efficace pour freiner la descente du module.<\/p>\n<p>Quant \u00e0 l&#8217;orbiteur TGO, il utilisera l&#8217;atmosph\u00e8re martienne pour modifier sa trajectoire et se placer sur une orbite circulaire \u00e0 400 km d\u2019altitude avec une p\u00e9riode de r\u00e9volution de 2 heures. Il sera \u00e9quip\u00e9 d&#8217;un d\u00e9tecteur \u00e0 neutrons de conception russe (con\u00e7u pour \u00e9tudier les r\u00e9servoirs de glace souterrains et de min\u00e9raux hydrat\u00e9s), d&#8217;un imageur suisse (<a href=\"http:\/\/exploration.esa.int\/mars\/48523-trace-gas-orbiter-instruments\/?fbodylongid=2210\" target=\"_blank\">CASSIS<\/a>) et de deux spectrom\u00e8tres destin\u00e9s \u00e0 trouver l&#8217;origine des <a href=\"http:\/\/www.futura-sciences.com\/magazines\/espace\/infos\/actu\/d\/orbiter-trace-gaz-exomars-assaut-enigmatique-methane-martien-61921\/\" target=\"_blank\">bouff\u00e9es de m\u00e9thane<\/a> r\u00e9guli\u00e8rement d\u00e9tect\u00e9es sur Mars.<\/p>\n<p>La mission ExoMars se poursuivra en 2018 avec l&#8217;envoi d&#8217;un rover de taille similaire \u00e0 celle de <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/01\/27\/sur-mars-curiosity-etudie-des-dunes-en-mouvement\/\" target=\"_blank\">Curiosity<\/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>Lanc\u00e9e le 14 mars de Ba\u00efkonour au Kazakhstan, la sonde europ\u00e9enne ExoMars arrivera en vue de la Plan\u00e8te rouge au mois d&#8217;octobre prochain. Avec ExoMars, l&#8217;Agence spatiale europ\u00e9enne s&#8217;est fix\u00e9e un objectif ambitieux : r\u00e9aliser son premier atterrissage sur la Plan\u00e8te rouge. Elle a pour cela con\u00e7u un module de d\u00e9monstration d&#8217;entr\u00e9e, de descente et &hellip; <a href=\"https:\/\/blogs.futura-sciences.com\/feldmann\/2016\/03\/30\/en-video-le-voyage-de-la-sonde-exomars\/\" class=\"more-link\">Continuer la lecture de <span class=\"screen-reader-text\">En vid\u00e9o : le voyage de la sonde ExoMars<\/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":5347,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[87],"tags":[708,1445,116,777,115,1566,1013],"class_list":["post-5345","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-les-hommes-et-le-ciel","tag-exomars","tag-giovanni-schiaparelli","tag-mars","tag-meridiani-planum","tag-planete-rouge","tag-tgo","tag-video"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.1 - 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