{"id":752,"date":"2018-06-08T06:02:17","date_gmt":"2018-06-08T06:02:17","guid":{"rendered":"https:\/\/blogs.futura-sciences.com\/frankel\/?p=752"},"modified":"2019-08-05T03:47:13","modified_gmt":"2019-08-05T03:47:13","slug":"molecules-organiques-sur-mars","status":"publish","type":"post","link":"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/06\/08\/molecules-organiques-sur-mars\/","title":{"rendered":"Mol\u00e9cules organiques sur Mars"},"content":{"rendered":"

La NASA vient d\u2019annoncer la publication, dans le num\u00e9ro de Science<\/em> du 8 juin, de deux articles r\u00e9sumant les derni\u00e8res d\u00e9couvertes de la sonde Curiosity<\/em> qui explore le crat\u00e8re Gale et ses s\u00e9diments lacustres depuis ao\u00fbt 2012. Avec la mise en sc\u00e8ne m\u00e9diatique qu\u2019elle aime bien utiliser pour attirer l\u2019attention, l\u2019agence spatiale claironne que ses chercheurs ont identifi\u00e9, \u00e0 partir des instruments \u00e0 bord de la sonde et en particulier son spectrom\u00e8tre fran\u00e7ais SAM (Sample Analysis at Mars), des mol\u00e9cules organiques complexes et vari\u00e9es dans le sol martien. Un article parall\u00e8le confirme aussi la pr\u00e9sence d\u2019une mol\u00e9cule organique simple, le m\u00e9thane (CH4), dans l\u2019atmosph\u00e8re de la plan\u00e8te rouge.<\/p>\n

\"\"<\/a>
L’instrument d’analyse SAM, avant embarquement sur la sonde.<\/figcaption><\/figure>\n

La sonde Curiosity avait d\u00e9j\u00e0 d\u00e9tect\u00e9 des mol\u00e9cules organiques en d\u00e9but de mission, ou du moins les fragments de ce qu\u2019il en restait apr\u00e8s vaporisation d\u2019\u00e9chantillons et analyse. Les nouvelles donn\u00e9es sont beaucoup plus pr\u00e9cises et identifient les mol\u00e9cules\u00a0: propane et but\u00e8ne, et surtout des mol\u00e9cules plus complexes, de type thioph\u00e8ne, benz\u00e8ne et tolu\u00e8ne.
\nLa NASA souligne bien que ces mol\u00e9cules organiques n\u2019ont pas n\u00e9cessairement\u2014loin s\u2019en faut\u2014\u00e9t\u00e9 produites par des organismes vivants. Mais leur concentration cons\u00e9quente\u201410 parts par million, soit 0,001\u00a0%\u2014prouve une fois pour toute que malgr\u00e9 les conditions adverses (oxydants, ultraviolet) \u00e0 la surface de Mars, des mol\u00e9cules organiques existent sous deux \u00e0 trois centim\u00e8tres de sol.
\nNous reviendrons ce weekend sur ces d\u00e9couvertes, apr\u00e8s analyse des articles publi\u00e9s dans Science.<\/p>\n","protected":false},"excerpt":{"rendered":"

La NASA vient d\u2019annoncer la publication, dans le num\u00e9ro de Science du 8 juin, de deux articles r\u00e9sumant les derni\u00e8res d\u00e9couvertes de la sonde Curiosity qui explore le crat\u00e8re Gale et ses s\u00e9diments lacustres depuis ao\u00fbt 2012. Avec la mise en sc\u00e8ne m\u00e9diatique qu\u2019elle aime bien utiliser pour attirer l\u2019attention, l\u2019agence spatiale claironne que ses … Continuer la lecture de Mol\u00e9cules organiques sur Mars<\/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-752","post","type-post","status-publish","format-standard","hentry","category-actualites","category-sciences"],"yoast_head":"\nMol\u00e9cules organiques sur Mars - Carnets de bord d\u2019un martien, le blog de Charles FRANKEL, g\u00e9ologue<\/title>\n<meta name=\"description\" content=\"Des mol\u00e9cules organiques complexes viennent d'\u00eatre d\u00e9couvertes par Curiosity dans le sol martien. Si elles ne sont pas preuve de vie pour l'instant, elles appuient la possibilit\u00e9 qu'une vie primitive puisse exister dans le sous-sol de la plan\u00e8te rouge.\" \/>\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\/06\/08\/molecules-organiques-sur-mars\/\" \/>\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\/2018\/06\/08\/molecules-organiques-sur-mars\/\",\"url\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/06\/08\/molecules-organiques-sur-mars\/\",\"name\":\"Mol\u00e9cules organiques sur Mars - 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\/06\/08\/molecules-organiques-sur-mars\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/06\/08\/molecules-organiques-sur-mars\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2018\/06\/SAM-cropped.jpg\",\"datePublished\":\"2018-06-08T06:02:17+00:00\",\"dateModified\":\"2019-08-05T03:47:13+00:00\",\"author\":{\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/#\/schema\/person\/c6bf521c6d19bf22fb19fb2b3d6fcf63\"},\"description\":\"Des mol\u00e9cules organiques complexes viennent d'\u00eatre d\u00e9couvertes par Curiosity dans le sol martien. Si elles ne sont pas preuve de vie pour l'instant, elles appuient la possibilit\u00e9 qu'une vie primitive puisse exister dans le sous-sol de la plan\u00e8te rouge.\",\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/06\/08\/molecules-organiques-sur-mars\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/06\/08\/molecules-organiques-sur-mars\/#primaryimage\",\"url\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2018\/06\/SAM-cropped.jpg\",\"contentUrl\":\"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2018\/06\/SAM-cropped.jpg\",\"width\":1072,\"height\":830,\"caption\":\"L'instrument d'analyse SAM, avant embarquement sur la sonde.\"},{\"@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 ? Apr\u00e8s tout, qu\u2019est-elle, sinon une longue et syst\u00e9matique curiosit\u00e9 ? Andr\u00e9 Maurois\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/blogs.futura-sciences.com\/frankel\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/#\/schema\/person\/c6bf521c6d19bf22fb19fb2b3d6fcf63\",\"name\":\"Charles Frankel\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/blogs.futura-sciences.com\/frankel\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/93767f419dc6f3384f1e52a1a4c8f5b5?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/93767f419dc6f3384f1e52a1a4c8f5b5?s=96&d=mm&r=g\",\"caption\":\"Charles Frankel\"},\"url\":\"https:\/\/blogs.futura-sciences.com\/frankel\/author\/cfrankel\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Mol\u00e9cules organiques sur Mars - Carnets de bord d\u2019un martien, le blog de Charles FRANKEL, g\u00e9ologue","description":"Des mol\u00e9cules organiques complexes viennent d'\u00eatre d\u00e9couvertes par Curiosity dans le sol martien. Si elles ne sont pas preuve de vie pour l'instant, elles appuient la possibilit\u00e9 qu'une vie primitive puisse exister dans le sous-sol de la plan\u00e8te rouge.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/06\/08\/molecules-organiques-sur-mars\/","twitter_misc":{"\u00c9crit par":"Charles Frankel","Dur\u00e9e de lecture estim\u00e9e":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/06\/08\/molecules-organiques-sur-mars\/","url":"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/06\/08\/molecules-organiques-sur-mars\/","name":"Mol\u00e9cules organiques sur Mars - 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\/06\/08\/molecules-organiques-sur-mars\/#primaryimage"},"image":{"@id":"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/06\/08\/molecules-organiques-sur-mars\/#primaryimage"},"thumbnailUrl":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2018\/06\/SAM-cropped.jpg","datePublished":"2018-06-08T06:02:17+00:00","dateModified":"2019-08-05T03:47:13+00:00","author":{"@id":"https:\/\/blogs.futura-sciences.com\/frankel\/#\/schema\/person\/c6bf521c6d19bf22fb19fb2b3d6fcf63"},"description":"Des mol\u00e9cules organiques complexes viennent d'\u00eatre d\u00e9couvertes par Curiosity dans le sol martien. Si elles ne sont pas preuve de vie pour l'instant, elles appuient la possibilit\u00e9 qu'une vie primitive puisse exister dans le sous-sol de la plan\u00e8te rouge.","inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/blogs.futura-sciences.com\/frankel\/2018\/06\/08\/molecules-organiques-sur-mars\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/blogs.futura-sciences.com\/frankel\/2018\/06\/08\/molecules-organiques-sur-mars\/#primaryimage","url":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2018\/06\/SAM-cropped.jpg","contentUrl":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-content\/uploads\/sites\/7\/2018\/06\/SAM-cropped.jpg","width":1072,"height":830,"caption":"L'instrument d'analyse SAM, avant embarquement sur la sonde."},{"@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 ? Apr\u00e8s tout, qu\u2019est-elle, sinon une longue et syst\u00e9matique curiosit\u00e9 ? Andr\u00e9 Maurois","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/blogs.futura-sciences.com\/frankel\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Person","@id":"https:\/\/blogs.futura-sciences.com\/frankel\/#\/schema\/person\/c6bf521c6d19bf22fb19fb2b3d6fcf63","name":"Charles Frankel","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/blogs.futura-sciences.com\/frankel\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/93767f419dc6f3384f1e52a1a4c8f5b5?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/93767f419dc6f3384f1e52a1a4c8f5b5?s=96&d=mm&r=g","caption":"Charles Frankel"},"url":"https:\/\/blogs.futura-sciences.com\/frankel\/author\/cfrankel\/"}]}},"_links":{"self":[{"href":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-json\/wp\/v2\/posts\/752","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-json\/wp\/v2\/comments?post=752"}],"version-history":[{"count":4,"href":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-json\/wp\/v2\/posts\/752\/revisions"}],"predecessor-version":[{"id":760,"href":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-json\/wp\/v2\/posts\/752\/revisions\/760"}],"wp:attachment":[{"href":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-json\/wp\/v2\/media?parent=752"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-json\/wp\/v2\/categories?post=752"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.futura-sciences.com\/frankel\/wp-json\/wp\/v2\/tags?post=752"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}