{"id":12762,"date":"2016-06-25T10:10:50","date_gmt":"2016-06-25T08:10:50","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=12762"},"modified":"2016-06-25T10:10:50","modified_gmt":"2016-06-25T08:10:50","slug":"un-mineral-tres-rare-sur-mars-prouve-quil-existait-des-oceans","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/un-mineral-tres-rare-sur-mars-prouve-quil-existait-des-oceans\/","title":{"rendered":"Un min\u00e9ral tr\u00e8s rare sur Mars prouve qu&rsquo;il existait des oc\u00e9ans"},"content":{"rendered":"<div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"1\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n<p style=\"text-align: justify;\">Le robot Curiosity est tomb\u00e9 sur de la Tridymite, un min\u00e9ral volcanique assez rare sur Terre. Son nom rime avec Kryptonite et laisse imaginer les plus chouettes sc\u00e9narios de science-fiction. De la Tridymite a, en effet, \u00e9t\u00e9 d\u00e9couverte en juin 2015 par le robot Curiosity dans le crat\u00e8re Gale, sur Mars. Une d\u00e9couverte majeure pour les experts de la plan\u00e8te rouge.<\/p>\n<p style=\"text-align: justify;\">Myst\u00e8re et \u00ab surprise \u00bb scientifique<\/p>\n<p style=\"text-align: justify;\">Pourquoi ? Tout simplement parce que la Tridymite est un min\u00e9ral volcanique, appartenant \u00e0 la famille des \u00ab silices cristallines \u00bb et est assez rare sur Terre. Alors, en trouver \u00ab en grande quantit\u00e9 \u00bb sur une autre plan\u00e8te rel\u00e8ve du myst\u00e8re, de la \u00ab surprise \u00bb scientifique, assurent les chercheurs de la Nasa qui viennent de publier les r\u00e9sultats de leur d\u00e9couverte dans la revue en ligne Proceedings of the National Academy of Sciences (Pnas).<\/p>\n<p style=\"text-align: justify;\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"12763\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/un-mineral-tres-rare-sur-mars-prouve-quil-existait-des-oceans\/curiosity-mars-fevrier-2013\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/curiosity-mars-fevrier-2013.jpg?fit=648%2C415&amp;ssl=1\" data-orig-size=\"648,415\" data-comments-opened=\"1\" data-image-meta=\"{&quot;aperture&quot;:&quot;0&quot;,&quot;credit&quot;:&quot;&quot;,&quot;camera&quot;:&quot;&quot;,&quot;caption&quot;:&quot;&quot;,&quot;created_timestamp&quot;:&quot;0&quot;,&quot;copyright&quot;:&quot;&quot;,&quot;focal_length&quot;:&quot;0&quot;,&quot;iso&quot;:&quot;0&quot;,&quot;shutter_speed&quot;:&quot;0&quot;,&quot;title&quot;:&quot;&quot;,&quot;orientation&quot;:&quot;0&quot;}\" data-image-title=\"curiosity-mars-fevrier-2013\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;credit Nasa&lt;\/p&gt;\n\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/curiosity-mars-fevrier-2013.jpg?fit=648%2C415&amp;ssl=1\" class=\"alignnone size-full wp-image-12763\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/curiosity-mars-fevrier-2013.jpg?resize=648%2C415\" alt=\"curiosity-mars-fevrier-2013\" width=\"648\" height=\"415\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/curiosity-mars-fevrier-2013.jpg?w=648&amp;ssl=1 648w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/curiosity-mars-fevrier-2013.jpg?resize=300%2C192&amp;ssl=1 300w\" sizes=\"auto, (max-width: 648px) 100vw, 648px\" \/><\/p><div class=\"1665f18d14f35dd9e7566e1a8ac9a3e9\" data-index=\"2\" style=\"float: none; margin:10px 0 10px 0; text-align:center;\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script>\r\n<ins class=\"adsbygoogle\"\r\n     style=\"display:block; text-align:center;\"\r\n     data-ad-layout=\"in-article\"\r\n     data-ad-format=\"fluid\"\r\n     data-ad-client=\"ca-pub-2860849627502538\"\r\n     data-ad-slot=\"3019501113\"><\/ins>\r\n<script>\r\n     (adsbygoogle = window.adsbygoogle || []).push({});\r\n<\/script>\n<\/div>\n\n<p style=\"text-align: justify;\">Volcans explosifs, eau de mer et oc\u00e9ans<\/p>\n<p style=\"text-align: justify;\">La Tridymite se cristallise lorsque la pression est basse et que la temp\u00e9rature d\u00e9passe les 800 degr\u00e9s, d\u2019o\u00f9 sa pr\u00e9sence dans les volcans tr\u00e8s chauds, dont la lave a \u00e9t\u00e9 expos\u00e9e\u2026 \u00e0 beaucoup d\u2019eau de mer.<\/p>\n<p style=\"text-align: justify;\">D\u00e9duction faite : la pr\u00e9sence de Tridymite sur Mars prouverait donc qu\u2019il y a bel et bien eu des volcans explosifs sur Mars, mais aussi de l\u2019eau sal\u00e9e, voire des oc\u00e9ans. La pr\u00e9sence potentielle d\u2019un ancien lac sous le crat\u00e8re Gale ne pourrait ainsi plus relever de la supposition. Et l\u00e0, les astronomes s\u2019emballent \u00e0 nouveau pour tenter de r\u00e9\u00e9crire l\u2019histoire de la formation de la plus c\u00e9l\u00e8bre des plan\u00e8tes rouges.<\/p>\n<p style=\"text-align: justify;\">source :\u00a0<a href=\"http:\/\/www.20minutes.fr\/sciences\/1872839-20160624-nasa-etonne-avoir-decouvert-mineral-tres-rare-mars\" target=\"_blank\">http:\/\/www.20minutes.fr\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"12762\">(381)<\/p>\n<!--CusAds0-->\n<div style=\"font-size: 0px; height: 0px; line-height: 0px; margin: 0; padding: 0; clear: both;\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Le robot Curiosity est tomb\u00e9 sur de la Tridymite, un min\u00e9ral volcanique assez rare sur Terre. Son nom rime avec&#8230;<\/p>\n","protected":false},"author":1,"featured_media":12764,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"ngg_post_thumbnail":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"Un min\u00e9ral tr\u00e8s rare sur Mars prouve qu'il existait des oc\u00e9ans @laterredufutur","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[22],"tags":[123,5958,241,121,5957,308,49],"class_list":["post-12762","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-mars","tag-mineral-volcanique","tag-ocean","tag-planete","tag-tridymite","tag-vie","tag-volcans","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/ocean-mars.jpg?fit=945%2C556&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-3jQ","jetpack-related-posts":[{"id":17418,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-japon-a-decouvert-un-gisement-de-minerais-de-terres-rares-pouvant-approvisionner-le-monde-pendant-des-siecles\/","url_meta":{"origin":12762,"position":0},"title":"Le Japon a d\u00e9couvert un gisement de minerais de terres rares pouvant approvisionner le monde pendant des si\u00e8cles","author":"Admin","date":"18 janvier 2019","format":false,"excerpt":"Courant 2018, des chercheurs ont d\u00e9couvert un gisement de min\u00e9raux de terres rares au large des c\u00f4tes du Japon qui pourrait alimenter le monde pendant des si\u00e8cles, selon une \u00e9tude. L' \u00e9tude, publi\u00e9e dans la revue Nature en avril 2018, indique que le gisement contient 16 millions de tonnes de\u2026","rel":"","context":"Dans &quot;Monde Futur&quot;","block_context":{"text":"Monde Futur","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/monde-futur\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/12\/terres_rares_japon-fond-marin.jpg?fit=1000%2C568&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/12\/terres_rares_japon-fond-marin.jpg?fit=1000%2C568&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/12\/terres_rares_japon-fond-marin.jpg?fit=1000%2C568&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/12\/terres_rares_japon-fond-marin.jpg?fit=1000%2C568&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":27153,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-nasa-decouvre-un-corail-vieux-de-plusieurs-milliards-dannees-sur-mars\/","url_meta":{"origin":12762,"position":1},"title":"La NASA d\u00e9couvre un \u00ab corail \u00bb vieux de plusieurs milliards d&rsquo;ann\u00e9es sur Mars","author":"Admin","date":"12 ao\u00fbt 2025","format":false,"excerpt":"Le rover Curiosity de la NASA a pris des images en noir et blanc d'un rocher sur la surface martienne qui ressemble remarquablement \u00e0 un morceau de corail. Le rover Curiosity de la NASA a envoy\u00e9 des images intrigantes de ce qui ressemble \u00e0 un morceau de corail sur Mars\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/corail-mars.webp?fit=650%2C366&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/corail-mars.webp?fit=650%2C366&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/corail-mars.webp?fit=650%2C366&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":10900,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-formations-pourraient-suggerer-lexistence-de-vie-sur-mars\/","url_meta":{"origin":12762,"position":2},"title":"Des formations pourraient sugg\u00e9rer l&rsquo;existence de vie sur Mars","author":"Admin","date":"3 f\u00e9vrier 2016","format":false,"excerpt":"D'\u00e9tranges formations observ\u00e9es sur Mars par le rover de la NASA, Spirit, pourraient \u00eatre le signe de l'existence pass\u00e9e de vie. Ces d\u00e9p\u00f4ts min\u00e9raux ressembleraient fortement \u00e0 des formations rep\u00e9r\u00e9es sur Terre et cr\u00e9\u00e9es par des micro-organismes. Y a-t-il un jour eu de la vie sur Mars ? Cette question\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"Mars","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/11\/mars5.jpg?fit=450%2C255&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":27258,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-nasa-decouvre-des-traces-de-vie-anciennes-sur-mars\/","url_meta":{"origin":12762,"position":3},"title":"La Nasa d\u00e9couvre des traces de vie anciennes sur Mars ?","author":"Admin","date":"17 septembre 2025","format":false,"excerpt":"Le myst\u00e8re autour des prometteurs rochers martiens pr\u00e9lev\u00e9s par le rover Perseverance reste entier. En d\u00e9pit des annonces de la Nasa ce mercredi 10 septembre sur l'hypoth\u00e8se d'une r\u00e9action biologique \u00e0 l'origine des \u00e9tranges t\u00e2ches bleu et vert, il est indispensable de ramener sur Terre pour de plus amples recherches.\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/09\/mars.jpg?fit=1198%2C573&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/09\/mars.jpg?fit=1198%2C573&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/09\/mars.jpg?fit=1198%2C573&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/09\/mars.jpg?fit=1198%2C573&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/09\/mars.jpg?fit=1198%2C573&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":25843,"url":"https:\/\/www.laterredufutur.com\/accueil\/curiosity-decouvre-sur-mars-un-passe-habitable-semblable-a-celui-de-la-terre-mais-comment-loxygene-y-est-il-arrive\/","url_meta":{"origin":12762,"position":4},"title":"Curiosity d\u00e9couvre sur Mars un pass\u00e9 \u00ab\u00a0habitable\u00a0\u00bb semblable \u00e0 celui de la Terre, mais comment l&rsquo;oxyg\u00e8ne y est-il arriv\u00e9 ?","author":"Admin","date":"9 mai 2024","format":false,"excerpt":"Les roches examin\u00e9es par le rover Curiosity dans un ancien lit de lac ass\u00e9ch\u00e9 depuis longtemps sur Mars ont r\u00e9v\u00e9l\u00e9 des conditions susceptibles d'avoir \u00e9t\u00e9 habitables il y a des milliards d'ann\u00e9es. Curiosity a trouv\u00e9 dans les roches du crat\u00e8re Gale une quantit\u00e9 surprenante d'oxyde de mangan\u00e8se, un min\u00e9ral que\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/05\/mars-eau-vie.jpg?fit=1024%2C533&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/05\/mars-eau-vie.jpg?fit=1024%2C533&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/05\/mars-eau-vie.jpg?fit=1024%2C533&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/05\/mars-eau-vie.jpg?fit=1024%2C533&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":24535,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-lune-a-eu-des-volcans\/","url_meta":{"origin":12762,"position":5},"title":"La Lune a eu des volcans","author":"Admin","date":"6 novembre 2022","format":false,"excerpt":"Il y a cinquante ans, la NASA et le programme spatial sovi\u00e9tique ont men\u00e9 les premi\u00e8res missions de retour d'\u00e9chantillons de la Lune. Il s'agissait de roches lunaires ramen\u00e9es sur Terre par les astronautes d'Apollo et de celles obtenues par des missions robotis\u00e9es dans le cadre du programme sovi\u00e9tique Luna.\u2026","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/11\/la-lune-en-fausses-couleurs.jpg?fit=1024%2C415&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/11\/la-lune-en-fausses-couleurs.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/11\/la-lune-en-fausses-couleurs.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/11\/la-lune-en-fausses-couleurs.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/12762","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/comments?post=12762"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/12762\/revisions"}],"predecessor-version":[{"id":12765,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/12762\/revisions\/12765"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/12764"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=12762"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=12762"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=12762"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}