{"id":24340,"date":"2022-08-27T06:20:12","date_gmt":"2022-08-27T04:20:12","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=24340"},"modified":"2022-08-27T06:20:12","modified_gmt":"2022-08-27T04:20:12","slug":"decouverte-dune-probable-planete-ocean","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-dune-probable-planete-ocean\/","title":{"rendered":"D\u00e9couverte d&rsquo;une probable plan\u00e8te oc\u00e9an"},"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>Elle serait ainsi enti\u00e8rement recouverte d&rsquo;une \u00e9paisse couche d&rsquo;eau. Si on sait que l\u2019eau liquide est essentielle au d\u00e9veloppement de la vie, il est beaucoup trop t\u00f4t pour se prononcer sur la potentielle pr\u00e9sence de vie sur cette exoplan\u00e8te.<\/p>\n<p>TOI-1452 b est une exoplan\u00e8te en orbite autour d&rsquo;une des deux \u00e9toiles d&rsquo;un syst\u00e8me binaire situ\u00e9 dans la constellation du Dragon, \u00e0 100 ann\u00e9es-lumi\u00e8re de la Terre. Observ\u00e9e par des chercheurs de l&rsquo;Universit\u00e9 de Montr\u00e9al, elle pourrait \u00eatre ce que l&rsquo;on appelle une \u00ab\u00a0plan\u00e8te-oc\u00e9an\u00a0\u00bb. Elle serait ainsi enti\u00e8rement recouverte d&rsquo;une \u00e9paisse couche d&rsquo;eau, selon les premi\u00e8res informations d&rsquo;une \u00e9tude publi\u00e9e dans l\u2019Astrophysical Journal.<\/p>\n<p>\u00ab\u00a0L\u2019exoplan\u00e8te TOI-1452 b est l\u2019une des meilleures candidates au titre de \u201cplan\u00e8te oc\u00e9an\u201d que l\u2019on connaisse, indique Charles Cadieux, \u00e9tudiant de doctorat de l\u2019Universit\u00e9 de Montr\u00e9al et membre de l\u2019Institut de recherche sur les exoplan\u00e8tes qui a men\u00e9 l&rsquo;\u00e9tude. Le rayon et la masse de la plan\u00e8te laissent supposer une densit\u00e9 plus faible que la valeur attendue pour une plan\u00e8te qui, \u00e0 l\u2019instar de la Terre, serait essentiellement form\u00e9e de m\u00e9taux et de roche\u00a0\u00bb. L&rsquo;Universit\u00e9 de Montr\u00e9al a publi\u00e9 une vid\u00e9o de la repr\u00e9sentation de cette exoplan\u00e8te.<\/p>\n<p>L&rsquo;oc\u00e9an sur cette plan\u00e8te pourrait \u00eatre vaste et profond. Comme sur certains satellites naturels du syst\u00e8me solaires tels que Ganym\u00e8de et Callisto, des lunes de Jupiter, ou Titan et Encelade, des lunes de Saturne.<\/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><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\/yBlYGG6V1bI?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>\n<p>Elle pourrait \u00eatre la candidate id\u00e9ale pour prouver une bonne fois pour toutes que la vie existe ailleurs, en dehors de notre syst\u00e8me solaire. \u00c0 l\u2019avenir le t\u00e9lescope spatial James Webb pourrait s\u2019int\u00e9resser \u00e0 la plan\u00e8te et venir l\u2019\u00e9tudier de plus pr\u00e8s.<\/p>\n<p>Gr\u00e2ce \u00e0 son capteur ultra pr\u00e9cis dans les infrarouges, le t\u00e9lescope serait capable de voir \u00ab sous l\u2019eau \u00bb et ainsi nous donner des informations sur la composition de la roche de cette plan\u00e8te. Si une telle observation n\u2019est pas encore \u00e0 l\u2019ordre du jour, l\u2019une des missions de James Webb est de trouver de la vie en dehors de la Terre. L\u2019\u00e9tude de TOI-1452 b est donc plus qu\u2019envisageable.<\/p>\n<p>sources : <a href=\"https:\/\/www.bfmtv.com\/sciences\/une-probable-planete-ocean-observee-a-100-annees-lumiere-de-la-terre_AN-202208260289.html\" rel=\"noopener\" target=\"_blank\">https:\/\/www.bfmtv.com\/<\/a> \/ <a href=\"https:\/\/www.midilibre.fr\/2022\/08\/26\/ce-que-lon-sait-de-la-probable-planete-ocean-decouverte-par-des-scientifiques-a-100-annees-lumiere-de-la-terre-10507242.php\" rel=\"noopener\" target=\"_blank\">https:\/\/www.midilibre.fr\/<\/a> \/ <a href=\"https:\/\/www.presse-citron.net\/cette-planete-soeur-de-la-terre-est-aussi-notre-voisine\/\" rel=\"noopener\" target=\"_blank\">https:\/\/www.presse-citron.net\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"24340\">(500)<\/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>Elle serait ainsi enti\u00e8rement recouverte d&rsquo;une \u00e9paisse couche d&rsquo;eau. Si on sait que l\u2019eau liquide est essentielle au d\u00e9veloppement de&#8230;<\/p>\n","protected":false},"author":1,"featured_media":24341,"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":"D\u00e9couverte d'une probable #plan\u00e8te #oc\u00e9an @laterredufutur.com Terra Projects","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":[333,359,241,121],"class_list":["post-24340","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-eau","tag-exoplanete","tag-ocean","tag-planete","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/08\/exoplanete-ocean.jpg?fit=1600%2C900&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-6kA","jetpack-related-posts":[{"id":17600,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-tiers-des-exoplanetes-connues-seraient-des-planetes-oceans\/","url_meta":{"origin":24340,"position":0},"title":"Un tiers des exoplan\u00e8tes connues seraient des \u00ab\u00a0plan\u00e8tes-oc\u00e9ans\u00a0\u00bb","author":"Admin","date":"3 f\u00e9vrier 2019","format":false,"excerpt":"Une \u00e9quipe de chercheurs de l\u2019Universit\u00e9 d\u2019Harvard a classifi\u00e9 les exoplan\u00e8tes selon leur rayon. Plus d\u2019un tiers d\u2019entre elles seraient recouvertes \u00e0 moiti\u00e9 d\u2019eau. Li Zeng, astronome \u00e0 Harvard et son \u00e9quipe ont publi\u00e9 en ao\u00fbt une \u00e9tude dans le Monthly Notices of the Royal Astronomical Society. Ils y proposent\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\/exoplan%C3%A8te-ocean.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\/2019\/01\/exoplan%C3%A8te-ocean.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/exoplan%C3%A8te-ocean.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/exoplan%C3%A8te-ocean.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/exoplan%C3%A8te-ocean.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":26520,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-nasa-a-decouvert-une-planete-plus-imposante-que-la-terre-avec-un-gaz-qui-nest-produit-que-par-la-vie\/","url_meta":{"origin":24340,"position":1},"title":"La NASA a d\u00e9couvert une plan\u00e8te plus imposante que la Terre avec un gaz qui n&rsquo;est produit que par la vie","author":"Admin","date":"10 janvier 2025","format":false,"excerpt":"La NASA a d\u00e9couvert une plan\u00e8te plus grande que la Terre, accompagn\u00e9e d'un gaz \u00ab uniquement produit par la vie \u00bb. Alors que l'agence spatiale continue de faire d'incroyables d\u00e9couvertes dans notre syst\u00e8me solaire, l'une d'entre elles, datant de 2023, est toujours aussi impressionnante. Cette d\u00e9couverte a \u00e9t\u00e9 r\u00e9alis\u00e9e gr\u00e2ce\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\/01\/exoplanete.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/01\/exoplanete.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/01\/exoplanete.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/01\/exoplanete.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":25249,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-telescope-james-webb-decouvre-du-methane-et-du-dioxyde-de-carbone-dans-latmosphere-de-k2-18-b\/","url_meta":{"origin":24340,"position":2},"title":"Le t\u00e9lescope James Webb d\u00e9couvre du m\u00e9thane et du dioxyde de carbone dans l&rsquo;atmosph\u00e8re de K2-18 b","author":"Admin","date":"27 septembre 2023","format":false,"excerpt":"Une nouvelle observation de K2-18 b, une exoplan\u00e8te 8,6 fois plus massive que la Terre, par le t\u00e9lescope spatial James Webb de la NASA a r\u00e9v\u00e9l\u00e9 la pr\u00e9sence de mol\u00e9cules contenant du carbone, notamment du m\u00e9thane et du dioxyde de carbone. La d\u00e9couverte de M. Webb vient s'ajouter \u00e0 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\/2023\/09\/exoplanete-K2-18b.jpg?fit=985%2C554&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/09\/exoplanete-K2-18b.jpg?fit=985%2C554&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/09\/exoplanete-K2-18b.jpg?fit=985%2C554&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/09\/exoplanete-K2-18b.jpg?fit=985%2C554&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":25354,"url":"https:\/\/www.laterredufutur.com\/accueil\/y-a-t-il-de-la-vie-sur-la-superterre-k2-18-b-de-leau-decouverte-dans-son-atmosphere\/","url_meta":{"origin":24340,"position":3},"title":"Y a-t-il de la vie sur la superterre K2-18 b ? De l&rsquo;eau d\u00e9couverte dans son atmosph\u00e8re !","author":"Admin","date":"10 novembre 2023","format":false,"excerpt":"De la vapeur d'eau a \u00e9t\u00e9 d\u00e9couverte dans l'atmosph\u00e8re d'une exoplan\u00e8te super-Terre, K2-18 b, qui orbite dans la zone habitable de son \u00e9toile. La temp\u00e9rature de la plan\u00e8te est similaire \u00e0 celle de la Terre, ce qui en fait un candidat prometteur pour des \u00e9tudes plus approfondies. K2-18 b a\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\/11\/K2-18-b-exoplanete.jpg?fit=1200%2C466&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/11\/K2-18-b-exoplanete.jpg?fit=1200%2C466&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/11\/K2-18-b-exoplanete.jpg?fit=1200%2C466&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/11\/K2-18-b-exoplanete.jpg?fit=1200%2C466&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/11\/K2-18-b-exoplanete.jpg?fit=1200%2C466&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":24340,"position":4},"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":13801,"url":"https:\/\/www.laterredufutur.com\/accueil\/notre-systeme-solaire-contient-des-oceans-partout\/","url_meta":{"origin":24340,"position":5},"title":"Notre syst\u00e8me solaire contient des oc\u00e9ans partout","author":"Admin","date":"7 novembre 2016","format":false,"excerpt":"De tout temps, l\u2019Homme a toujours cru que la Terre et ses oc\u00e9ans en faisaient un lieu tout \u00e0 fait exceptionnel, il avait raison. Par la vie \u00a0qui s\u2019est d\u00e9velopp\u00e9e sur notre plan\u00e8te, notre berceau est fantastique. Cependant toute cette eau qui a baign\u00e9 les \u00e9l\u00e9ments de cette vie 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\/2015\/10\/ocean.jpg?fit=1200%2C800&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/ocean.jpg?fit=1200%2C800&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/ocean.jpg?fit=1200%2C800&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/ocean.jpg?fit=1200%2C800&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/ocean.jpg?fit=1200%2C800&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/24340","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=24340"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/24340\/revisions"}],"predecessor-version":[{"id":24342,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/24340\/revisions\/24342"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/24341"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=24340"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=24340"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=24340"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}