{"id":5438,"date":"2015-04-15T13:08:32","date_gmt":"2015-04-15T11:08:32","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=5438"},"modified":"2015-04-15T13:08:32","modified_gmt":"2015-04-15T11:08:32","slug":"de-leau-liquide-pourrait-etre-piegee-dans-le-sol-de-mars","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/de-leau-liquide-pourrait-etre-piegee-dans-le-sol-de-mars\/","title":{"rendered":"De l&rsquo;eau liquide pourrait \u00eatre pi\u00e9g\u00e9e dans le sol de Mars"},"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>Gr\u00e2ce aux donn\u00e9es relev\u00e9es par Curiosity, on a d\u00e9couvert dans le sol de Mars du perchlorate de calcium, une sorte de sel qui absorbe la vapeur d&rsquo;eau de l&rsquo;atmosph\u00e8re pour former une sorte de \u00ab\u00a0saumure\u00a0\u00bb.<\/p>\n<p>Des analyses de donn\u00e9es envoy\u00e9es par le robot am\u00e9ricain Curiosity renforcent l&rsquo;hypoth\u00e8se selon laquelle de l&rsquo;eau liquide pourrait exister sur la plan\u00e8te Mars. C&rsquo;est un enseignement d&rsquo;une \u00e9tude publi\u00e9e lundi 13 avril 2015 dans la revue scientifique Nature. \u00ab\u00a0Nous avons d\u00e9couvert du perchlorate de calcium dans le sol (&#8230;), une substance qui sous certaines conditions absorbe la vapeur d&rsquo;eau pr\u00e9sente dans l&rsquo;atmosph\u00e8re\u00a0\u00bb, explique Morten Bo Madsen, coauteur des travaux, cit\u00e9 dans un communiqu\u00e9 de l&rsquo;Institut Niels Bohr de l&rsquo;universit\u00e9 de Copenhague. Le perchlorate, un type de sel, abaisse le point de cong\u00e9lation de l&rsquo;eau, de sorte qu&rsquo;elle reste liquide.<\/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>Quand la nuit tombe, une partie de la vapeur d&rsquo;eau dans l&rsquo;atmosph\u00e8re se condense \u00e0 la surface de la plan\u00e8te et givre. Mais le perchlorate de calcium est tr\u00e8s absorbant et forme avec l&rsquo;eau une \u00ab\u00a0saumure\u00a0\u00bb, ce qui abaisse le point de cong\u00e9lation et permet au givre de se transformer en eau liquide, pr\u00e9cise le chercheur. Le sol \u00e9tant poreux, l&rsquo;eau s&rsquo;infiltre dans le sol.<\/p>\n<p>M\u00eame si de l&rsquo;eau sous forme liquide existe sur Mars, il est improbable que l&rsquo;on y trouve de la vie\u00a0\u00bb<\/p>\n<p>Des observations du robot, qui est en train de gravir le Mont Sharp, situ\u00e9 au milieu du crat\u00e8re Gale, t\u00e9moignent \u00e9galement de la pr\u00e9sence de d\u00e9p\u00f4ts s\u00e9dimentaires. \u00ab\u00a0Ce type de d\u00e9p\u00f4ts se forme lorsque de grandes quantit\u00e9s d&rsquo;eau s&rsquo;\u00e9coulent le long du crat\u00e8re et rejoignent des eaux stagnantes pour former un lac\u00a0\u00bb, indique le chercheur. Il y a 4,5 milliards d&rsquo;ann\u00e9es, la plan\u00e8te Rouge contenait 6,5 fois plus d&rsquo;eau qu&rsquo;aujourd&rsquo;hui et une atmosph\u00e8re plus \u00e9paisse, selon Morten Bo Madsen. Notre voisine poss\u00e9dait alors un oc\u00e9an en surface aussi vaste que l&rsquo;Atlantique, et dont le volume \u00e9tait \u00e9quivalent \u00e0 celui de l&rsquo;Arctique !<\/p>\n<p>source : http:\/\/www.sciencesetavenir.fr\/<\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"5438\">(292)<\/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>Gr\u00e2ce aux donn\u00e9es relev\u00e9es par Curiosity, on a d\u00e9couvert dans le sol de Mars du perchlorate de calcium, une sorte&#8230;<\/p>\n","protected":false},"author":1,"featured_media":5439,"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":"","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":[252,1462,332,333,879,123,308],"class_list":["post-5438","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-atmosphere","tag-curiosity","tag-desert","tag-eau","tag-eau-liquide","tag-mars","tag-vie","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/mars2.jpg?fit=833%2C413&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-1pI","jetpack-related-posts":[{"id":5882,"url":"https:\/\/www.laterredufutur.com\/accueil\/mars-pourrait-avoir-de-leau-liquide-salee\/","url_meta":{"origin":5438,"position":0},"title":"Mars pourrait avoir de l&rsquo;eau liquide sal\u00e9e","author":"Admin","date":"20 avril 2015","format":false,"excerpt":"Les chercheurs savent depuis longtemps qu'il y avait de l'eau sous forme de glace sur Mars. Maintenant, de nouvelles recherches de Mars rover Curiosity de la NASA montre qu'il est possible qu'il y ait de l'eau liquide \u00e0 proximit\u00e9 de la surface de Mars. L'explication est que de la substance\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\/2015\/04\/eau-salee-liquide-sur-mars.jpg?fit=720%2C382&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/eau-salee-liquide-sur-mars.jpg?fit=720%2C382&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/eau-salee-liquide-sur-mars.jpg?fit=720%2C382&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/04\/eau-salee-liquide-sur-mars.jpg?fit=720%2C382&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":8432,"url":"https:\/\/www.laterredufutur.com\/accueil\/de-leau-coule-sur-mars\/","url_meta":{"origin":5438,"position":1},"title":"De l&rsquo;eau coule sur Mars","author":"Admin","date":"28 septembre 2015","format":false,"excerpt":"La NASA avait fait miroiter il y a quelques jours une \u00ab d\u00e9couverte scientifique majeure \u00bb concernant Mars. Depuis lors, les sp\u00e9culations allaient bon train sur la webosph\u00e8re, toujours pr\u00eate \u00e0 s\u2019enflammer lorsqu\u2019il est question de la Plan\u00e8te rouge : d\u00e9tection d\u2019une forme de vie, de sources d\u2019eau liquide, etc.\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\/2015\/09\/eau-mars.png?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/09\/eau-mars.png?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/09\/eau-mars.png?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/09\/eau-mars.png?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/09\/eau-mars.png?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":15498,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-vie-sur-mars-a-pu-durer-bien-plus-longtemps-que-prevu\/","url_meta":{"origin":5438,"position":2},"title":"La vie sur Mars a pu durer bien plus longtemps que pr\u00e9vu","author":"Admin","date":"10 juillet 2017","format":false,"excerpt":"De nouvelles analyses des donn\u00e9es fournies par le rover martien Curiosity montrent que Mars \u00e9tait un lieu temp\u00e9r\u00e9 voici encore 3,1 milliards d'ann\u00e9es, une \u00e9poque o\u00f9 sur Terre la vie grouillait d\u00e9j\u00e0. On ne sait toujours pas s'il y a eu de la vie sur Mars. Mais de r\u00e9centes analyses\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\/2017\/07\/cratere-mars.jpg?fit=1024%2C1093&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/07\/cratere-mars.jpg?fit=1024%2C1093&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/07\/cratere-mars.jpg?fit=1024%2C1093&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/07\/cratere-mars.jpg?fit=1024%2C1093&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":1998,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-future-de-micros-organismes-sur-mars\/","url_meta":{"origin":5438,"position":3},"title":"D\u00e9couverte future de micros-organismes sur Mars","author":"Admin","date":"15 mai 2014","format":false,"excerpt":"Des micro-organismes gel\u00e9s sur Mars Pourraient \u00eatre ramen\u00e9s \u00e0 la vie. Nous savons d\u00e9j\u00e0 que de l\u2019eau sous forme de glace est pr\u00e9sente aux p\u00f4les, mais aussi \u00e0 d\u2019autres latitudes sur la plan\u00e8te Mars. Des scientifiques laissent entendre que d\u2019importantes quantit\u00e9s d\u2019eau liquide auraient sillonn\u00e9 des canaux, devenus aujourd\u2019hui d\u2019\u00e9normes\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\/mars3.jpg?fit=450%2C255&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":24926,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-rover-chinois-decouvre-des-preuves-deau-liquide-sur-mars\/","url_meta":{"origin":5438,"position":4},"title":"Un rover chinois d\u00e9couvre des preuves d&rsquo;eau liquide sur Mars","author":"Admin","date":"2 mai 2023","format":false,"excerpt":"Cette d\u00e9couverte pourrait fournir des \"indices cl\u00e9s concernant la recherche future de la vie\". Des chercheurs affirment que le rover chinois Zhurong, qui a pass\u00e9 des mois \u00e0 explorer la surface de Mars, pourrait avoir trouv\u00e9 des preuves de l'existence d'eau liquide aux basses latitudes, o\u00f9 les temp\u00e9ratures sont relativement\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\/2023\/05\/sonde-chinoise-rover-mars.webp?fit=1080%2C567&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/05\/sonde-chinoise-rover-mars.webp?fit=1080%2C567&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/05\/sonde-chinoise-rover-mars.webp?fit=1080%2C567&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/05\/sonde-chinoise-rover-mars.webp?fit=1080%2C567&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/05\/sonde-chinoise-rover-mars.webp?fit=1080%2C567&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":27473,"url":"https:\/\/www.laterredufutur.com\/accueil\/mars-fut-habitable-plus-longtemps-quon-ne-le-pensait-selon-une-nouvelle-etude\/","url_meta":{"origin":5438,"position":5},"title":"Mars fut habitable plus longtemps qu&rsquo;on ne le pensait, selon une nouvelle \u00e9tude","author":"Admin","date":"29 novembre 2025","format":false,"excerpt":"Il existe un consensus scientifique selon lequel de l'eau a coul\u00e9 sur Mars et que son atmosph\u00e8re \u00e9tait plus dense, ce qui signifie qu'elle \u00e9tait autrefois habitable. Malheureusement, il y a environ 4,2 \u00e0 3,7 milliards d'ann\u00e9es, les rivi\u00e8res, les lacs et l'oc\u00e9an global de Mars ont commenc\u00e9 \u00e0 dispara\u00eetre\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\/11\/mars-couvert-deau.jpg?fit=1200%2C675&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/11\/mars-couvert-deau.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/11\/mars-couvert-deau.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/11\/mars-couvert-deau.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/11\/mars-couvert-deau.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/5438","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=5438"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/5438\/revisions"}],"predecessor-version":[{"id":5440,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/5438\/revisions\/5440"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/5439"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=5438"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=5438"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=5438"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}