{"id":29321,"date":"2026-07-04T08:00:47","date_gmt":"2026-07-04T06:00:47","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=29321"},"modified":"2026-07-03T22:34:54","modified_gmt":"2026-07-03T20:34:54","slug":"une-super-terre-potentiellement-habitable-decouverte-a-seulement-25-annees-lumiere","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/une-super-terre-potentiellement-habitable-decouverte-a-seulement-25-annees-lumiere\/","title":{"rendered":"Une super-Terre potentiellement habitable d\u00e9couverte \u00e0 seulement 25 ann\u00e9es-lumi\u00e8re"},"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>Une plan\u00e8te d\u00e9couverte une premi\u00e8re fois en 2024 autour d&rsquo;une petite \u00e9toile naine rouge, baptis\u00e9e GJ 3378, pourrait \u00eatre encore plus semblable \u00e0 la Terre que ce que les premi\u00e8res observations laissaient penser.&nbsp;<\/p>\n<p>Cette plan\u00e8te, nomm\u00e9e GJ 3378b, appartient \u00e0 la cat\u00e9gorie des super-Terres : des mondes plus massifs que la Terre, mais suffisamment petits pour \u00eatre essentiellement rocheux, contrairement aux mini-Neptunes riches en gaz.<\/p>\n<p>De nouvelles observations, r\u00e9alis\u00e9es gr\u00e2ce \u00e0 plusieurs t\u00e9lescopes, ont permis d&rsquo;affiner consid\u00e9rablement ses caract\u00e9ristiques.<\/p>\n<p>Les chercheurs ont notamment d\u00e9couvert que :<\/p>\n<ul>\n<li>sa masse est d&rsquo;environ 2,3 fois celle de la Terre, contre une estimation initiale de 5,3 masses terrestres ;<\/li>\n<li>elle est donc beaucoup plus susceptible d&rsquo;\u00eatre une plan\u00e8te rocheuse ;<\/li>\n<\/ul>\n<p>elle se situe toujours dans la zone habitable de son \u00e9toile, c&rsquo;est-\u00e0-dire \u00e0 une distance o\u00f9 de l&rsquo;eau liquide pourrait exister \u00e0 sa surface si une atmosph\u00e8re est pr\u00e9sente.&nbsp;<\/p>\n<p><strong>Pourquoi cette d\u00e9couverte est importante<\/strong><\/p>\n<p>Jusqu&rsquo;\u00e0 pr\u00e9sent, la masse estim\u00e9e de GJ 3378b la pla\u00e7ait \u00e0 la fronti\u00e8re entre deux cat\u00e9gories :<\/p>\n<ul>\n<li>les super-Terres, g\u00e9n\u00e9ralement rocheuses ;<\/li>\n<li>les mini-Neptunes, recouvertes d&rsquo;une \u00e9paisse enveloppe gazeuse.<\/li>\n<\/ul>\n<p>La nouvelle estimation change la donne. Avec seulement 2,3 masses terrestres, les probabilit\u00e9s qu&rsquo;il s&rsquo;agisse d&rsquo;un monde solide ressemblant davantage \u00e0 la Terre augmentent fortement.&nbsp;<\/p>\n<p><strong>Une voisine \u00e0 l&rsquo;\u00e9chelle cosmique<\/strong><\/p>\n<p>La plan\u00e8te se trouve \u00e0 25 ann\u00e9es-lumi\u00e8re de nous, dans la constellation de la Girafe (Camelopardalis).<\/p>\n<p>Cela para\u00eet immense, mais \u00e0 l&rsquo;\u00e9chelle de notre galaxie, qui mesure pr\u00e8s de 100 000 ann\u00e9es-lumi\u00e8re de diam\u00e8tre, elle fait partie de notre proche voisinage cosmique.&nbsp;<\/p>\n<p><strong>Une temp\u00e9rature prometteuse<\/strong><\/p>\n<p>Les nouvelles mesures montrent \u00e9galement que la plan\u00e8te effectue une r\u00e9volution autour de son \u00e9toile en 21 jours.<\/p>\n<p>Son \u00e9toile \u00e9tant une naine rouge beaucoup moins lumineuse que le Soleil, cette courte orbite la place malgr\u00e9 tout dans une r\u00e9gion o\u00f9 elle re\u00e7oit environ 90 % de l&rsquo;\u00e9nergie que la Terre re\u00e7oit du Soleil.<\/p>\n<p>Autrement dit, si GJ 3378b poss\u00e8de une atmosph\u00e8re, sa temp\u00e9rature pourrait permettre la pr\u00e9sence d&rsquo;eau liquide en surface.&nbsp;<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"29327\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/une-super-terre-potentiellement-habitable-decouverte-a-seulement-25-annees-lumiere\/exoplanete-naine-rouge-1\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-1.jpg?fit=1536%2C1024&amp;ssl=1\" data-orig-size=\"1536,1024\" data-comments-opened=\"0\" 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;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"Exoplanete naine rouge 1\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-1.jpg?fit=800%2C533&amp;ssl=1\" class=\"aligncenter wp-image-29327 size-large\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-1.jpg?resize=800%2C533&#038;ssl=1\" alt=\"\" width=\"800\" height=\"533\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-1.jpg?resize=800%2C533&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-1.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-1.jpg?resize=80%2C53&amp;ssl=1 80w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-1.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-1.jpg?resize=1226%2C817&amp;ssl=1 1226w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-1.jpg?resize=928%2C619&amp;ssl=1 928w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-1.jpg?resize=480%2C320&amp;ssl=1 480w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-1.jpg?w=1536&amp;ssl=1 1536w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p><strong>Un obstacle majeur : la naine rouge<\/strong><\/p>\n<p>Tout n&rsquo;est cependant pas id\u00e9al.<\/p>\n<p>Les naines rouges sont connues pour produire de puissantes \u00e9ruptions et un vent stellaire intense pouvant progressivement arracher l&rsquo;atmosph\u00e8re des plan\u00e8tes proches.<\/p>\n<p>Aujourd&rsquo;hui, les astronomes ignorent donc si GJ 3378b poss\u00e8de encore une atmosph\u00e8re capable de prot\u00e9ger une \u00e9ventuelle vie.&nbsp;<\/p>\n<p><strong>Pourquoi le t\u00e9lescope James Webb ne peut pas r\u00e9pondre<\/strong><\/p>\n<p>Habituellement, le T\u00e9lescope spatial James Webb \u00e9tudie les atmosph\u00e8res d&rsquo;exoplan\u00e8tes lorsqu&rsquo;elles passent devant leur \u00e9toile.<\/p>\n<p>Mais GJ 3378b ne transite pas devant son \u00e9toile depuis notre point de vue terrestre.<\/p>\n<p>Cette technique est donc impossible \u00e0 utiliser dans son cas.&nbsp;<\/p>\n<p><strong>Il faudra attendre la prochaine g\u00e9n\u00e9ration de t\u00e9lescopes<\/strong><\/p>\n<p>Les chercheurs esp\u00e8rent que le futur observatoire de la NASA, le Habitable Worlds Observatory, pr\u00e9vu dans les ann\u00e9es 2040, sera capable d&rsquo;observer directement cette plan\u00e8te et de d\u00e9terminer :<\/p>\n<ul>\n<li>si elle poss\u00e8de une atmosph\u00e8re ;<\/li>\n<li>quelle est sa composition ;<\/li>\n<\/ul>\n<p>et, peut-\u00eatre un jour, si des biosignatures (indices d&rsquo;une activit\u00e9 biologique) y sont d\u00e9tectables.&nbsp;<\/p>\n<p><strong>Une cible de premier plan<\/strong><\/p>\n<p>M\u00eame si rien ne prouve aujourd&rsquo;hui que cette plan\u00e8te abrite la vie, GJ 3378b est d\u00e9sormais consid\u00e9r\u00e9e comme l&rsquo;une des meilleures candidates proches de la Terre pour rechercher un monde potentiellement habitable.<\/p>\n<p>Sa proximit\u00e9, sa probable nature rocheuse et sa position dans la zone habitable en font une cible prioritaire pour les futurs grands t\u00e9lescopes.<\/p>\n<p><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"29326\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/une-super-terre-potentiellement-habitable-decouverte-a-seulement-25-annees-lumiere\/exoplanete-naine-rouge\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?fit=1536%2C1024&amp;ssl=1\" data-orig-size=\"1536,1024\" data-comments-opened=\"0\" 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;,&quot;alt&quot;:&quot;&quot;}\" data-image-title=\"Exoplanete naine rouge\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?fit=800%2C533&amp;ssl=1\" class=\"aligncenter wp-image-29326 size-large\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?resize=800%2C533&#038;ssl=1\" alt=\"\" width=\"800\" height=\"533\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?resize=800%2C533&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?resize=300%2C200&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?resize=80%2C53&amp;ssl=1 80w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?resize=768%2C512&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?resize=1226%2C817&amp;ssl=1 1226w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?resize=928%2C619&amp;ssl=1 928w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?resize=480%2C320&amp;ssl=1 480w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?w=1536&amp;ssl=1 1536w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/p>\n<p>Adaptation Terra Projects&nbsp;<\/p>\n<p>Source : <a href=\"https:\/\/www.sciencealert.com\/potentially-habitable-super-earth-found-just-25-light-years-away\" target=\"_blank\" rel=\"noopener\">https:\/\/www.sciencealert.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"29321\">(1)<\/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>Une plan\u00e8te d\u00e9couverte une premi\u00e8re fois en 2024 autour d&rsquo;une petite \u00e9toile naine rouge, baptis\u00e9e GJ 3378, pourrait \u00eatre encore&#8230;<\/p>\n","protected":false},"author":1,"featured_media":29326,"comment_status":"closed","ping_status":"closed","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_feature_clip_id":0,"_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},"jetpack_post_was_ever_published":false},"categories":[22],"tags":[359,8382,362,364],"class_list":["post-29321","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-exoplanete","tag-gj-3378b","tag-habitable","tag-naine-rouge","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2026\/07\/Exoplanete-naine-rouge-.jpg?fit=1536%2C1024&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-7CV","jetpack-related-posts":[{"id":15360,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-dune-nouvelle-super-terre-potentiellement-habitable\/","url_meta":{"origin":29321,"position":0},"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":[]},{"id":27390,"url":"https:\/\/www.laterredufutur.com\/accueil\/a-18-annees-lumiere-de-notre-systeme-solaire-une-super-terre-pourrait-abriter-la-vie\/","url_meta":{"origin":29321,"position":1},"title":"A 18 ann\u00e9es-lumi\u00e8re de notre Syst\u00e8me solaire, une super-Terre pourrait abriter la vie","author":"Admin","date":"27 octobre 2025","format":false,"excerpt":"La chasse aux mondes habitables franchit un nouveau cap avec la d\u00e9couverte de GJ 251c, une exoplan\u00e8te situ\u00e9e \u00e0 seulement 18 ann\u00e9es-lumi\u00e8re. Voici pourquoi ce monde suscite tant d\u2019espoirs dans la recherche de vie extraterrestre. GJ 251c : une exoplan\u00e8te massive, temp\u00e9r\u00e9e et potentiellement habitable Les astronomes ont identifi\u00e9 GJ\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\/2020\/10\/exoplanete.jpg?fit=1200%2C575&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/10\/exoplanete.jpg?fit=1200%2C575&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/10\/exoplanete.jpg?fit=1200%2C575&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/10\/exoplanete.jpg?fit=1200%2C575&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/10\/exoplanete.jpg?fit=1200%2C575&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":14996,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-scientifiques-viennent-de-detecter-une-atmosphere-sur-une-exoplanete\/","url_meta":{"origin":29321,"position":2},"title":"Des scientifiques viennent de d\u00e9tecter une atmosph\u00e8re sur une exoplan\u00e8te","author":"Admin","date":"15 avril 2017","format":false,"excerpt":"La recherche de formes de vie extraterrestre est sans doute l\u2019une des qu\u00eates les plus exaltantes de l\u2019univers. Des chercheurs viennent de d\u00e9couvrir une atmosph\u00e8re autour de Gliese 1132b, une exoplan\u00e8te de la taille de la Terre, faisant d\u2019elle une candidate potentielle au d\u00e9veloppement de la vie. LA D\u00c9COUVERTE D\u2019UNE\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\/04\/GJ-1132b.jpg?fit=904%2C508&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/04\/GJ-1132b.jpg?fit=904%2C508&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/04\/GJ-1132b.jpg?fit=904%2C508&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/04\/GJ-1132b.jpg?fit=904%2C508&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":19587,"url":"https:\/\/www.laterredufutur.com\/accueil\/lexoplanete-gj-357d-pourrait-abriter-la-vie\/","url_meta":{"origin":29321,"position":3},"title":"L\u2019exoplan\u00e8te GJ 357d pourrait abriter la vie","author":"Admin","date":"13 octobre 2019","format":false,"excerpt":"Le satellite TESS, charg\u00e9 de la recherche en exoplan\u00e8tes \u00e0 la NASA, vient de pr\u00e9senter GJ 357d, une plan\u00e8te cousine \u00e0 la Terre, potentiellement apte \u00e0 abriter la vie. Son syst\u00e8me solaire est form\u00e9 de trois plan\u00e8tes gravitant autour d\u2019une \u00e9toile naine. GJ 357d est la derni\u00e8re d\u2019une s\u00e9rie 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\/2019\/08\/GJ-357d-1.jpg?fit=932%2C582&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/08\/GJ-357d-1.jpg?fit=932%2C582&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/08\/GJ-357d-1.jpg?fit=932%2C582&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/08\/GJ-357d-1.jpg?fit=932%2C582&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":2099,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-dune-planete-habitable-proche-de-la-terre\/","url_meta":{"origin":29321,"position":4},"title":"D\u00e9couverte d&rsquo;une plan\u00e8te habitable proche de la Terre","author":"Admin","date":"1 juillet 2014","format":false,"excerpt":"A 16,1 ann\u00e9es-lumi\u00e8re, Gliese 832c serait l'exoplan\u00e8te habitable la plus proche de la Terre. Selon l'astronome co-auteur de la d\u00e9couverte, \"il peut \u00eatre possible pour la vie de survivre\" sur cette plan\u00e8te, mais avec des changements saisonniers extr\u00eames. Un mois apr\u00e8s la d\u00e9couverte de l'\u00e9toile de Kapteyn, c'est au tour\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\/wordpress\/wp-content\/uploads\/2014\/07\/laterredufutur.com_photos_Gliese-832c-1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":26334,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-jwst-telescope-james-webb-repere-le-premier-monde-de-vapeur-deau-connu\/","url_meta":{"origin":29321,"position":5},"title":"Le JWST (telescope James Webb) rep\u00e8re le premier \u00ab monde de vapeur d&rsquo;eau\u00bb connu","author":"Admin","date":"24 octobre 2024","format":false,"excerpt":"Au-del\u00e0 de notre syst\u00e8me solaire, la pression de ce monde aquatique pourrait cr\u00e9er des formes de mati\u00e8re bizarres. L'atmosph\u00e8re de cette exoplan\u00e8te fonctionne \u00e0 plein r\u00e9gime. Une plan\u00e8te situ\u00e9e au-del\u00e0 de notre syst\u00e8me solaire, appel\u00e9e GJ 9827d, poss\u00e8de une atmosph\u00e8re presque enti\u00e8rement compos\u00e9e de mol\u00e9cules d'eau chaude, rapportent des astronomes\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\/2024\/10\/exoplanete.webp?fit=1030%2C580&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/10\/exoplanete.webp?fit=1030%2C580&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/10\/exoplanete.webp?fit=1030%2C580&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/10\/exoplanete.webp?fit=1030%2C580&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/29321","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=29321"}],"version-history":[{"count":6,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/29321\/revisions"}],"predecessor-version":[{"id":29329,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/29321\/revisions\/29329"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/29326"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=29321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=29321"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=29321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}