{"id":15012,"date":"2017-04-13T21:40:36","date_gmt":"2017-04-13T19:40:36","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=15012"},"modified":"2017-04-13T21:40:36","modified_gmt":"2017-04-13T19:40:36","slug":"la-nasa-annonce-quune-des-lunes-de-saturne-pourrait-abriter-la-vie-extraterrestre","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/la-nasa-annonce-quune-des-lunes-de-saturne-pourrait-abriter-la-vie-extraterrestre\/","title":{"rendered":"La Nasa annonce qu\u2019une des lunes de Saturne pourrait abriter la vie extraterrestre"},"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>L&rsquo;agence am\u00e9ricaine a pr\u00e9sent\u00e9 ses derni\u00e8res d\u00e9couvertes, jeudi&#8230; La Nasa a d\u00e9couvert de l\u2019hydrog\u00e8ne dans les geysers \u00e0 la surface d\u2019Encelade, l\u2019une des satellites de Saturne, qui pr\u00e9sente des conditions propices \u00e0 l&rsquo;\u00e9tablissement de la vie.<\/p>\n<p>La recherche de la vie ailleurs dans le syst\u00e8me solaire progresse \u00e0 petits pas, mais elle progresse. Bien s\u00fbr, on esp\u00e8re beaucoup des sondes envoy\u00e9es \u00e0 la surface de la plan\u00e8te Mars dans un proche avenir, mais ce n&rsquo;est peut-\u00eatre pas la plan\u00e8te rouge qui nous apportera les r\u00e9sultats les plus int\u00e9ressants. Loin de la zone o\u00f9 l&rsquo;eau peut couler \u00e0 l&rsquo;\u00e9tat liquide, les petites lunes glac\u00e9es de Jupiter et de Saturne semblent avoir des environnements hospitaliers, au moins pour une vie microbienne.<\/p>\n<p>Encelade, une lune de Saturne est \u00e0 peine plus grande que la distance Paris-Londres, mais elle porte de grands espoirs. Depuis plusieurs ann\u00e9es, gr\u00e2ce notamment aux informations recueillies par la sonde Cassini (un projet commun entre la Nasa et les agences spatiales europ\u00e9enne (ESA) et italienne) on sait qu&rsquo;elle poss\u00e8de un vaste oc\u00e9an sous la glace de sa surface. Plus r\u00e9cemment, on a pu observer des jets de vapeur \u00e9manant de la r\u00e9gion de son p\u00f4le sud. Des signes d&rsquo;une activit\u00e9 hydrothermale qui se poursuit, donc. Dans les panaches, on a d\u00e9j\u00e0 d\u00e9tect\u00e9 du m\u00e9thane, qui est un signe possible d&rsquo;activit\u00e9 biologique, m\u00eame si d&rsquo;autres explications sont tout aussi probables.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"8995\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/la-sonde-cassini-va-traverser-un-geyser-dencelade\/encelade-2\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade.jpg?fit=1270%2C500&amp;ssl=1\" data-orig-size=\"1270,500\" 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=\"encelade\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade.jpg?fit=800%2C315&amp;ssl=1\" class=\"alignnone size-full wp-image-8995\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade.jpg?resize=1270%2C500\" alt=\"\" width=\"1270\" height=\"500\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade.jpg?w=1270&amp;ssl=1 1270w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade.jpg?resize=300%2C118&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade.jpg?resize=800%2C315&amp;ssl=1 800w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p>Cette d\u00e9couverte donne plus de poids \u00e0 la probabilit\u00e9 qu\u2019Encelade abrite une vie microbienne au sein de son immense oc\u00e9an liquide emprisonn\u00e9 sous la glace. Avec la pr\u00e9sence d&rsquo;eau chaude, d&rsquo;hydrog\u00e8ne et de sels min\u00e9raux \u00e0 sa surface, Encelade poss\u00e8de presque tous les \u00e9l\u00e9ments n\u00e9cessaires \u00e0 la vie. La Nasa a cependant pr\u00e9cis\u00e9 qu&rsquo;elle n&rsquo;avait pas trouv\u00e9 de trace de vie en l&rsquo;\u00e9tat.<\/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>Selon les scientifiques \u00e0 l&rsquo;origine de cette d\u00e9couverte rapport\u00e9e jeudi dans la revue am\u00e9ricaine Science, \u00ab\u00a0des r\u00e9actions hydrothermales entre des roches chaudes et l&rsquo;oc\u00e9an se trouvant sous la surface gel\u00e9e de la lune sont la seule source plausible de cet hydrog\u00e8ne\u00a0\u00bb. \u00ab\u00a0Bien que nous n&rsquo;ayons pas d\u00e9tect\u00e9 la vie, nous avons trouv\u00e9 une source d&rsquo;alimentation de la vie\u00a0\u00bb, a expliqu\u00e9 Hunter Waite, du Southwest Research Institute \u00e0 San Antonio (Texas). \u00ab\u00a0C&rsquo;est un peu comme un magasin de confiseries pour des microbes\u00a0\u00bb.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"8997\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/la-sonde-cassini-va-traverser-un-geyser-dencelade\/encelade-4\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade2.jpg?fit=500%2C585&amp;ssl=1\" data-orig-size=\"500,585\" 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=\"encelade\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade2.jpg?fit=500%2C585&amp;ssl=1\" class=\"size-full wp-image-8997 aligncenter\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade2.jpg?resize=500%2C585\" alt=\"\" width=\"500\" height=\"585\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade2.jpg?w=500&amp;ssl=1 500w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade2.jpg?resize=256%2C300&amp;ssl=1 256w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>La Nasa a aussi affirm\u00e9 qu&rsquo;il y a une chance pour qu&rsquo;Europe, un autre satellite de Saturne d&rsquo;une taille comparable \u00e0 la Terre, abrite \u00e9galement la vie microbienne. Les donn\u00e9es proviennent des observations de la sonde Cassini, en orbite autour de Saturne depuis 2004 et dont la mission s\u2019ach\u00e8ve en septembre. Les instruments de Cassini ont d\u00e9tect\u00e9 cet hydrog\u00e8ne mol\u00e9culaire en 2015, quand la sonde s&rsquo;est approch\u00e9e au plus pr\u00e8s de la surface d&rsquo;Encelade &#8211; \u00e0 environ 50 kilom\u00e8tres &#8211; pour traverser un geyser dans la r\u00e9gion du p\u00f4le sud. Cassini avait d\u00e9j\u00e0 collect\u00e9 des donn\u00e9es indiquant la pr\u00e9sence d&rsquo;un vaste oc\u00e9an sous une \u00e9paisse couche de glace au fond duquel se trouve un socle rocheux.<\/p>\n<p>sources : <a href=\"http:\/\/tempsreel.nouvelobs.com\/sciences\/20170413.OBS8004\/encelade-cette-lune-de-saturne-qui-pourrait-receler-la-vie.html\" target=\"_blank\">http:\/\/tempsreel.nouvelobs.com\/<\/a> \/ <a href=\"http:\/\/www.20minutes.fr\/sciences\/2049711-20170413-decouverte-nasa-mondes-oceaniques-extraterrestres-suivre-direct-partir-20h00\" target=\"_blank\">http:\/\/www.20minutes.fr\/<\/a> \/ <a href=\"http:\/\/www.rtl.fr\/culture\/futur\/la-nasa-annonce-qu-une-des-lunes-de-saturne-pourrait-abriter-la-vie-extraterrestre-7788116181\" target=\"_blank\">http:\/\/www.rtl.fr\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"15012\">(635)<\/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>L&rsquo;agence am\u00e9ricaine a pr\u00e9sent\u00e9 ses derni\u00e8res d\u00e9couvertes, jeudi&#8230; La Nasa a d\u00e9couvert de l\u2019hydrog\u00e8ne dans les geysers \u00e0 la surface&#8230;<\/p>\n","protected":false},"author":1,"featured_media":8996,"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_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":"La #Nasa annonce qu\u2019une des lunes de #Saturne pourrait abriter la vie #extraterrestre @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},"jetpack_post_was_ever_published":false},"categories":[22],"tags":[333,4957,2136,122,241,1628,308,6390],"class_list":["post-15012","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-eau","tag-geyser","tag-hydrogene","tag-lune","tag-ocean","tag-saturne","tag-vie","tag-vie-extraterestre","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/encelade1.jpg?fit=900%2C506&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-3U8","jetpack-related-posts":[{"id":25025,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-majeure-sur-encelade\/","url_meta":{"origin":15012,"position":0},"title":"D\u00e9couverte majeure sur Encelade","author":"Admin","date":"19 juin 2023","format":false,"excerpt":"De nouvelles donn\u00e9es indiquent qu\u2019Encelade poss\u00e8de tous les \u00e9l\u00e9ments n\u00e9cessaires \u00e0 la vie. Pour la premi\u00e8re fois, la pr\u00e9sence de phosphates a \u00e9t\u00e9 d\u00e9tect\u00e9e dans les panaches d\u2019eau lib\u00e9r\u00e9s par Encelade, renfor\u00e7ant l\u2019id\u00e9e que ce satellite naturel de Saturne puisse abriter la vie. LA PR\u00c9SENCE DE PHOSPHORE SUR ENCELADE CONFIRM\u00c9E\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\/09\/Encelade.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\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":25442,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-molecules-organiques-fascinantes-ont-ete-detectees-dans-leruption-dencelade\/","url_meta":{"origin":15012,"position":1},"title":"Des mol\u00e9cules organiques fascinantes ont \u00e9t\u00e9 d\u00e9tect\u00e9es dans l&rsquo;\u00e9ruption d&rsquo;Encelade","author":"Admin","date":"20 d\u00e9cembre 2023","format":false,"excerpt":"La lune de Saturne, Encelade, ne ressemble pas \u00e0 grand-chose. Elle est plut\u00f4t monochrome et petite, p\u00e2lissant en comparaison des anneaux voyants et de l'hexagone g\u00e9ant de Saturne. Mais, comme le montrent de nombreux objets du syst\u00e8me solaire, les apparences peuvent \u00eatre tr\u00e8s trompeuses. Encelade a bien plus \u00e0 offrir\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\/09\/Encelade.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\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":24429,"url":"https:\/\/www.laterredufutur.com\/accueil\/encelade-possede-les-six-elements-essentiels-a-la-vie\/","url_meta":{"origin":15012,"position":2},"title":"Encelade poss\u00e8de les six \u00e9l\u00e9ments essentiels \u00e0 la vie","author":"Admin","date":"25 septembre 2022","format":false,"excerpt":"La r\u00e9analyse de grains de roche glac\u00e9e provenant d'un anneau de Saturne - aliment\u00e9 par les panaches de glace de sa lune Encelade - a r\u00e9v\u00e9l\u00e9 la pr\u00e9sence de phosphore, le seul \u00e9l\u00e9ment essentiel \u00e0 la vie qui n'avait pas encore \u00e9t\u00e9 rep\u00e9r\u00e9. Encelade, la lune de Saturne, produit du\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\/09\/Encelade.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\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/Encelade.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":4366,"url":"https:\/\/www.laterredufutur.com\/accueil\/encelade-une-lune-de-saturne-pourrait-abriter-de-leau-et-peut-etre-la-vie\/","url_meta":{"origin":15012,"position":3},"title":"Encelade, une lune de Saturne pourrait abriter de l&rsquo;eau et peut-\u00eatre la vie","author":"Admin","date":"28 mars 2008","format":false,"excerpt":"WASHINGTON (AFP) - La sonde am\u00e9ricaine Cassini a d\u00e9tect\u00e9 des temp\u00e9ratures et des mol\u00e9cules organiques complexes attestant de la pr\u00e9sence d'eau et de conditions de vie possibles sur Encelade, une des lunes de Saturne, selon la Nasa. Le 12 mars, Cassini a d\u00e9cel\u00e9 une forte densit\u00e9 de vapeur d'eau et\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\/Encelade.jpg?fit=260%2C261&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":27320,"url":"https:\/\/www.laterredufutur.com\/accueil\/de-nouvelles-preuves-dune-chimie-complexe-decouvertes-dans-locean-extraterrestre-de-la-lune-de-encelade\/","url_meta":{"origin":15012,"position":4},"title":"De nouvelles preuves d&rsquo;une chimie complexe d\u00e9couvertes dans l&rsquo;oc\u00e9an extraterrestre de la lune de Encelade","author":"Admin","date":"5 octobre 2025","format":false,"excerpt":"Un nouvel examen des donn\u00e9es collect\u00e9es par la sonde Cassini de la NASA il y a pr\u00e8s de deux d\u00e9cennies a r\u00e9v\u00e9l\u00e9 de nouvelles mol\u00e9cules organiques complexes sur Encelade, la lune glac\u00e9e de Saturne , indiquant une chimie fascinante se d\u00e9roulant au plus profond de son oc\u00e9an cach\u00e9. 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Par la vie \u00a0qui s\u2019est d\u00e9velopp\u00e9e sur notre plan\u00e8te, notre berceau est fantastique. 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