{"id":16096,"date":"2017-12-09T20:00:12","date_gmt":"2017-12-09T19:00:12","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=16096"},"modified":"2017-12-01T22:11:50","modified_gmt":"2017-12-01T21:11:50","slug":"ross-128b-lexoplanete-semblable-a-la-terre","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/ross-128b-lexoplanete-semblable-a-la-terre\/","title":{"rendered":"Ross 128b, l&rsquo;exoplan\u00e8te semblable \u00e0 la Terre"},"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 \u00e9quipe d&rsquo;astronomes a d\u00e9couvert une exoplan\u00e8te au climat et \u00e0 la masse proches de ceux de la Terre. \u00c0 seulement 11 ann\u00e9es-lumi\u00e8re de nous, Ross 128b pourrait peut-\u00eatre abriter de la vie. Aurions-nous de nouveaux voisins ? A 11 ann\u00e9es-lumi\u00e8re de la Terre&#8230; C\u2019est en effet \u00e0 cette distance qu\u2019une \u00e9quipe d\u2019astronomes vient de d\u00e9couvrir une exoplan\u00e8te susceptible d\u2019accueillir la vie : Ross 128b.<\/p>\n<p>M\u00eame si le trajet peut para\u00eetre long, cette probable s\u0153ur jumelle de la Terre se place en fait \u00e0 la deuxi\u00e8me position des plan\u00e8tes potentiellement habitables, juste apr\u00e8s Proxima b, dont seules 4,2 ann\u00e9es-lumi\u00e8re nous s\u00e9pare. Elle parviendra m\u00eame un jour \u00e0 prendre la t\u00eate du classement : Ross 128b se rapproche chaque seconde un peu plus de nous et d\u00e9passera Proxima b dans seulement 79.000 ans.<\/p>\n<p>M\u00eame si elle partage avec la Terre bien des caract\u00e9ristiques communes, Ross 128b fait encore douter les scientifiques : se situe-t-elle ou non dans la \u00ab\u00a0zone habitable\u00a0\u00bb, autrement dit ni trop pr\u00e8s ni trop loin, de son \u00e9toile, condition indispensable pour y trouver de l&rsquo;eau liquide ? Autre enjeu crucial, d\u00e9terminer si des \u00e9l\u00e9ments comme l&rsquo;oxyg\u00e8ne composent son atmosph\u00e8re : sans eau et sans air, la vie devient difficilement possible.<\/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>Pour r\u00e9pondre \u00e0 ces questions qui les taraudent, les astronomes pr\u00e9voient de mettre \u00e0 contribution un t\u00e9lescope de toute nouvelle g\u00e9n\u00e9ration, l&rsquo;ELT, pour Extremely Large Telescope de l&rsquo;Observatoire europ\u00e9en austral (ESO). Le dispositif de pr\u00e8s de 40 m\u00e8tres de diam\u00e8tre pourrait, dans les ann\u00e9es \u00e0 venir, aider \u00e0 percer les myst\u00e8res qui planent encore autour de Ross 128b. \u00ab\u00a0L\u2019ELT nous offrira l\u2019opportunit\u00e9 d\u2019observer et de caract\u00e9riser bon nombre de plan\u00e8tes comparables \u00e0 la Terre\u00a0\u00bb, conclut Xavier Bonfils, chercheur \u00e0 l\u2019Institut de Plan\u00e9tologie et d&rsquo;Astrophysique de Grenoble et auteur de la d\u00e9couverte. L&rsquo;espoir, un jour peut \u00eatre, d&rsquo;aller frapper \u00e0 la porte de nouveaux voisins extraterrestres.<\/p>\n<p>extraits et sources : <a href=\"http:\/\/www.maxisciences.com\/exoplanete\/ross-128b-cette-exoplanete-semblable-a-la-terre-qui-pourrait-potentiellement-heberger-de-la-vie_art39900.html\" target=\"_blank\" rel=\"noopener\">http:\/\/www.maxisciences.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"16096\">(498)<\/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 \u00e9quipe d&rsquo;astronomes a d\u00e9couvert une exoplan\u00e8te au climat et \u00e0 la masse proches de ceux de la Terre. \u00c0&#8230;<\/p>\n","protected":false},"author":1,"featured_media":16097,"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":"Ross 128b, l'exoplan\u00e8te semblable \u00e0 la Terre @laterredufutur","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"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":[117,359,1948,6565],"class_list":["post-16096","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-espace","tag-exoplanete","tag-extrasolaire","tag-ross-128b","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/12\/ross128b.jpg?fit=580%2C356&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-4bC","jetpack-related-posts":[{"id":16656,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-nouvelle-planete-de-la-taille-de-la-terre-a-ete-decouverte\/","url_meta":{"origin":16096,"position":0},"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":18936,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-vie-pourrait-evoluer-actuellement-sur-les-exoplanetes-les-plus-proches\/","url_meta":{"origin":16096,"position":1},"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":16989,"url":"https:\/\/www.laterredufutur.com\/accueil\/lexoplanete-la-plus-proche-de-la-terre-jugee-hautement-habitable-par-les-scientifiques-de-la-nasa\/","url_meta":{"origin":16096,"position":2},"title":"L\u2019exoplan\u00e8te la plus proche de la Terre jug\u00e9e \u201chautement habitable\u201d par les scientifiques de la NASA","author":"Admin","date":"27 septembre 2018","format":false,"excerpt":"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. L\u2019EXOPLAN\u00c8TE LA PLUS PROCHE DE NOTRE SYST\u00c8ME\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":23748,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-autre-planete-decouverte-en-orbite-autour-de-proxima-du-centaure\/","url_meta":{"origin":16096,"position":3},"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":18124,"url":"https:\/\/www.laterredufutur.com\/accueil\/proxima-b-est-habitable-dans-presque-tous-leurs-modeles-pourquoi-pas-de-la-vie\/","url_meta":{"origin":16096,"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":13120,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-de-proxima-b-une-planete-habitable-proche-de-la-terre\/","url_meta":{"origin":16096,"position":5},"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":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16096","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=16096"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16096\/revisions"}],"predecessor-version":[{"id":16098,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/16096\/revisions\/16098"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/16097"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=16096"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=16096"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=16096"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}