{"id":16989,"date":"2018-09-27T20:00:25","date_gmt":"2018-09-27T18:00:25","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=16989"},"modified":"2018-09-28T19:56:18","modified_gmt":"2018-09-28T17:56:18","slug":"lexoplanete-la-plus-proche-de-la-terre-jugee-hautement-habitable-par-les-scientifiques-de-la-nasa","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/lexoplanete-la-plus-proche-de-la-terre-jugee-hautement-habitable-par-les-scientifiques-de-la-nasa\/","title":{"rendered":"L\u2019exoplan\u00e8te la plus proche de la Terre jug\u00e9e \u201chautement habitable\u201d par les scientifiques de la NASA"},"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>C\u2019est une d\u00e9couverte importante : de r\u00e9centes simulations informatiques lanc\u00e9es par des scientifiques de la NASA viennent de confirmer que Proxima b, exoplan\u00e8te la plus proche de notre syst\u00e8me solaire, pourrait bien abriter plusieurs oc\u00e9ans. Mieux encore, celle-ci serait \u00ab potentiellement habitable \u00bb.<\/p>\n<p>L\u2019EXOPLAN\u00c8TE LA PLUS PROCHE DE NOTRE SYST\u00c8ME SOLAIRE POURRAIT ABRITER PLUSIEURS OC\u00c9ANS<br \/>\nProxima b est situ\u00e9e \u00e0 quelques 4,2 ann\u00e9es-lumi\u00e8re de la Terre, et depuis sa d\u00e9couverte il y a trois ans, cette plan\u00e8te ne cesse de faire parler d\u2019elle dans la presse. Jug\u00e9e au d\u00e9part habitable par les chercheurs, elle \u00e9tait consid\u00e9r\u00e9e en 2017 comme peu propice au d\u00e9veloppement de la vie \u00e0 cause de conditions d\u00e9favorables qui y r\u00e9gnaient. Mais, coup de th\u00e9\u00e2tre, de r\u00e9centes simulations informatiques, bas\u00e9es sur des mod\u00e8les terrestres, ont pouss\u00e9 les scientifiques de la NASA \u00e0 revoir une nouvelle fois leur jugement.<\/p>\n<p>Ces simulations laissent \u00e0 penser que Proxima b abriterait de vastes \u00e9tendues d\u2019eau, \u00e9l\u00e9ment indispensable \u00e0 l\u2019apparition de la vie. Cette plan\u00e8te rocheuse tourne autour de son \u00e9toile, la naine rouge Proxima Centauri, et leur relation rappelle fortement celle de la Terre et de la Lune. Comme cette derni\u00e8re, Proxima b ne poss\u00e8de qu\u2019une seule face directement expos\u00e9e \u00e0 son \u00e9toile, ce qui semble sous-entendre que des temp\u00e9ratures tr\u00e8s chaudes y r\u00e9gneraient, tandis que la seconde, priv\u00e9e de lumi\u00e8re, serait probablement bien plus froide.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/3i5x_EIK9HU?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/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>PROXIMA B SERAIT \u00ab POTENTIELLEMENT HABITABLE \u00bb<br \/>\nSelon les chercheurs de la NASA, il serait possible que de vastes \u00e9tendues d\u2019eau subsistent sur Proxima b, mais en raison de son exposition particuli\u00e8re, celles-ci auraient tendance \u00e0 r\u00e9chauffer progressivement la face priv\u00e9e de lumi\u00e8re de la plan\u00e8te tellurique en circulant \u00e0 sa surface. Comme l\u2019explique Anthony Del Genio, membre de la NASA et co-auteur de l\u2019\u00e9tude parue dans la revue Astrobiology : \u00ab En d\u00e9pit du fait que cette face ne profite jamais directement du rayonnement de Proxima Centauri, nous avons d\u00e9couvert une bande d\u2019eau liquide dans sa r\u00e9gion \u00e9quatoriale \u00bb.<\/p>\n<p>Del Genio va m\u00eame plus loin en d\u00e9clarant que \u00ab le principal message de ces simulations reste qu\u2019il y a de bonnes chances que la plan\u00e8te soit habitable \u00bb. S\u2019il est pour l\u2019heure impossible d\u2019 analyser la composition exacte de l\u2019atmosph\u00e8re de Proxima b, qui viendraient d\u00e9finitivement confirmer les dires des scientifiques, cela pourrait changer dans un avenir proche gr\u00e2ce \u00e0 l\u2019arriv\u00e9e de puissants t\u00e9lescopes.<\/p>\n<p>Pour terminer, on rappelle que de nouveaux moyens de propulsion sont actuellement \u00e0 l\u2019\u00e9tude et devraient th\u00e9oriquement permettre \u00e0 un engin spatial de couvrir la distance s\u00e9parant la Terre de l\u2019exoplan\u00e8te Proxima b en une vingtaine d\u2019ann\u00e9es.<\/p>\n<p>source : <a href=\"https:\/\/dailygeekshow.com\/proxima-b-exoplanete-habitable-eau-vie-ocean\/\" target=\"_blank\" rel=\"noopener\">https:\/\/dailygeekshow.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"16989\">(881)<\/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>C\u2019est une d\u00e9couverte importante : de r\u00e9centes simulations informatiques lanc\u00e9es par des scientifiques de la NASA viennent de confirmer que&#8230;<\/p>\n","protected":false},"author":1,"featured_media":13121,"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":"L\u2019exoplan\u00e8te la plus proche de la Terre jug\u00e9e \u201chautement habitable\u201d par les scientifiques de la NASA @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":[117,359,362,6015],"class_list":["post-16989","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-espace","tag-exoplanete","tag-habitable","tag-proxima-b","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/08\/Proxima-centauri-b.jpg?fit=1078%2C800&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-4q1","jetpack-related-posts":[{"id":13120,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-de-proxima-b-une-planete-habitable-proche-de-la-terre\/","url_meta":{"origin":16989,"position":0},"title":"D\u00e9couverte de Proxima b, une plan\u00e8te \u00ab\u00a0habitable\u00a0\u00bb proche de la Terre","author":"Admin","date":"29 ao\u00fbt 2016","format":false,"excerpt":"Un pas de plus vers une deuxi\u00e8me Terre : l'observatoire europ\u00e9en austral (ESO) a d\u00e9tect\u00e9 une plan\u00e8te de masse proche de celle de la Terre autour de l'\u00e9toile la plus proche de nous, Proxima du Centaure. Il s\u2019est trouv\u00e9 que la rumeur sur l\u2019existence d\u2019une exoplan\u00e8te potentiellement habitable pr\u00e8s de\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\/2016\/08\/Proxima-centauri-b.jpg?fit=1078%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/08\/Proxima-centauri-b.jpg?fit=1078%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/08\/Proxima-centauri-b.jpg?fit=1078%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/08\/Proxima-centauri-b.jpg?fit=1078%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/08\/Proxima-centauri-b.jpg?fit=1078%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":18124,"url":"https:\/\/www.laterredufutur.com\/accueil\/proxima-b-est-habitable-dans-presque-tous-leurs-modeles-pourquoi-pas-de-la-vie\/","url_meta":{"origin":16989,"position":1},"title":"Proxima b est habitable dans presque tous leurs mod\u00e8les, pourquoi pas de la vie ?","author":"Admin","date":"27 janvier 2019","format":false,"excerpt":"En r\u00e9alisant une nouvelle s\u00e9rie de simulations reprenant des mod\u00e8les climatiques terrestres, une \u00e9quipe conduite par Anthony Del Genio, plan\u00e9tologue \u00e0 l'institut d'\u00e9tudes spatiales Goddard de la Nasa, d\u00e9montre que l'\u00e9tendue d'eau liquide \u00e0 la surface de Proxima b pourrait \u00eatre en fait beaucoup plus vaste que ce qui est\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\/01\/terre-proxima-du-centaure-proxima-b.jpg?fit=1078%2C752&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/terre-proxima-du-centaure-proxima-b.jpg?fit=1078%2C752&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/terre-proxima-du-centaure-proxima-b.jpg?fit=1078%2C752&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/terre-proxima-du-centaure-proxima-b.jpg?fit=1078%2C752&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/terre-proxima-du-centaure-proxima-b.jpg?fit=1078%2C752&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":23748,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-autre-planete-decouverte-en-orbite-autour-de-proxima-du-centaure\/","url_meta":{"origin":16989,"position":2},"title":"Une autre plan\u00e8te d\u00e9couverte en orbite autour de Proxima du Centaure","author":"Admin","date":"14 f\u00e9vrier 2022","format":false,"excerpt":"Une troisi\u00e8me exoplan\u00e8te a \u00e9t\u00e9 d\u00e9couverte autour de l'\u00e9toile la plus proche du Soleil, la naine rouge Proxima Centauri. Le syst\u00e8me triple d'Alpha du Centaure fait r\u00eaver les exobiologistes et, en particulier, les auteurs de science-fiction depuis longtemps. Non seulement parce qu'il s'agit des \u00e9toiles les plus proches du Soleil\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\/02\/Proxima-Centauri.jpg?fit=1024%2C665&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/02\/Proxima-Centauri.jpg?fit=1024%2C665&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/02\/Proxima-Centauri.jpg?fit=1024%2C665&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/02\/Proxima-Centauri.jpg?fit=1024%2C665&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":18936,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-vie-pourrait-evoluer-actuellement-sur-les-exoplanetes-les-plus-proches\/","url_meta":{"origin":16989,"position":3},"title":"La vie pourrait \u00e9voluer actuellement sur les exoplan\u00e8tes les plus proches","author":"Admin","date":"24 mai 2019","format":false,"excerpt":"L'enthousiasme a mont\u00e9 en fl\u00e8che lorsque des plan\u00e8tes rocheuses semblables \u00e0 la Terre ont \u00e9t\u00e9 d\u00e9couvertes en orbite dans la zone habitable de certaines de nos \u00e9toiles les plus proches - jusqu'\u00e0 ce que les espoirs de vie soient an\u00e9antis par les niveaux \u00e9lev\u00e9s de rayonnement qui bombardaient ces mondes.\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\/04\/exoplanete-etoile-rouge.jpg?fit=800%2C480&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/04\/exoplanete-etoile-rouge.jpg?fit=800%2C480&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/04\/exoplanete-etoile-rouge.jpg?fit=800%2C480&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/04\/exoplanete-etoile-rouge.jpg?fit=800%2C480&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":16656,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-nouvelle-planete-de-la-taille-de-la-terre-a-ete-decouverte\/","url_meta":{"origin":16989,"position":4},"title":"Une nouvelle plan\u00e8te de la taille de la Terre a \u00e9t\u00e9 d\u00e9couverte","author":"Admin","date":"1 juin 2018","format":false,"excerpt":"Une nouvelle plan\u00e8te de la taille de la Terre vient d'\u00eatre d\u00e9couverte, et ce monde potentiellement habitable, le plus proche de nous, orbite autour d'une \u00e9toile \u00ab calme \u00bb et propice \u00e0 la vie. D\u00e9couverte \u00e0 seulement 11 ann\u00e9es-lumi\u00e8re de notre plan\u00e8te, Ross 128b fait le tour d'une petite 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\/2018\/05\/ross-128-b-naine-rouge.jpg?fit=885%2C841&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/05\/ross-128-b-naine-rouge.jpg?fit=885%2C841&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/05\/ross-128-b-naine-rouge.jpg?fit=885%2C841&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/05\/ross-128-b-naine-rouge.jpg?fit=885%2C841&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":15360,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-dune-nouvelle-super-terre-potentiellement-habitable\/","url_meta":{"origin":16989,"position":5},"title":"D\u00e9couverte d&rsquo;une nouvelle super terre potentiellement habitable","author":"Admin","date":"9 juin 2017","format":false,"excerpt":"Une \u00e9quipe de scientifiques europ\u00e9ens a d\u00e9tect\u00e9 une nouvelle super-Terre \u00e0 seulement 21 ann\u00e9es lumi\u00e8res de notre plan\u00e8te. Elle p\u00e8se pr\u00e8s de 3 fois la Terre et les premiers \u00e9l\u00e9ments de recherche montrent qu\u2019il pourrait s\u2019agir d\u2019un monde rocheux abritant de l\u2019eau \u00e0 l\u2019\u00e9tat liquide. Une plan\u00e8te qui pourrait potentiellement\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\/06\/exoplanete.jpg?fit=900%2C549&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/06\/exoplanete.jpg?fit=900%2C549&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/06\/exoplanete.jpg?fit=900%2C549&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/06\/exoplanete.jpg?fit=900%2C549&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16989","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=16989"}],"version-history":[{"count":2,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16989\/revisions"}],"predecessor-version":[{"id":16991,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16989\/revisions\/16991"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/13121"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=16989"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=16989"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=16989"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}