{"id":15648,"date":"2017-09-09T20:00:19","date_gmt":"2017-09-09T18:00:19","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=15648"},"modified":"2017-08-25T16:37:19","modified_gmt":"2017-08-25T14:37:19","slug":"deux-planetes-potentiellement-habitables-a-12-annees-lumiere-de-la-terre","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/deux-planetes-potentiellement-habitables-a-12-annees-lumiere-de-la-terre\/","title":{"rendered":"Deux plan\u00e8tes potentiellement habitables \u00e0 12 ann\u00e9es-lumi\u00e8re de 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>Le syst\u00e8me de Tau Ceti poss\u00e8de quatre plan\u00e8tes, dont deux pourraient potentiellement abriter la vie extraterrestre.<\/p>\n<p>L&rsquo;\u00e9toile Tau Ceti, \u00e0 \u00ab\u00a0seulement\u00a0\u00bb 12 ann\u00e9es-lumi\u00e8re de la Terre, est l&rsquo;une des \u00e9toiles les plus proches de nous. \u00c0 l&rsquo;\u00e9chelle galactique, c&rsquo;est la porte \u00e0 c\u00f4t\u00e9. Si un jour l&rsquo;humanit\u00e9 arrive \u00e0 voyager d&rsquo;\u00e9toile en \u00e9toile, ou du moins \u00e0 envoyer des sondes pour explorer les syst\u00e8mes proches, Tau Ceti sera probablement dans les premi\u00e8res cibles.<\/p>\n<p>Une \u00e9ventualit\u00e9 prometteuse, puisque selon une \u00e9tude \u00e0 para\u00eetre dans la prochaine \u00e9dition de The Astrophysical Journal, non seulement Tau Ceti est dot\u00e9e d&rsquo;au moins quatre exoplan\u00e8tes rocheuses, mais deux d&rsquo;entre-elles orbitent aux fronti\u00e8res de la zone habitable de leur \u00e9toile. Ce qui signifie qu&rsquo;elles pourraient abriter de l&rsquo;eau \u00e0 l&rsquo;\u00e9tat liquide, et donc la vie extraterrestre&#8230;<\/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>Va-t-on bient\u00f4t rencontre des petits hommes verts? L&rsquo;hypoth\u00e8se reste faible, rappellent les chercheurs, d&rsquo;abord parce que \u00ab\u00a0zone habitable\u00a0\u00bb ne veut pas n\u00e9cessairement dire \u00ab\u00a0vie\u00a0\u00bb. Ensuite parce que Tau Ceti est entour\u00e9e d&rsquo;une immense barri\u00e8re de d\u00e9bris, constitu\u00e9e notamment d&rsquo;ast\u00e9ro\u00efdes et de com\u00e8tes, qui bombardent probablement les plan\u00e8tes environnantes. Extraterrestre ou pas, cette d\u00e9couverte n&rsquo;en reste pas moins tr\u00e8s encourageante, puisqu&rsquo;elle est fond\u00e9e sur l&rsquo;am\u00e9lioration d&rsquo;une m\u00e9thode de d\u00e9tection d\u00e9j\u00e0 existante.<\/p>\n<p>Prochaine \u00e9tape: la d\u00e9tection de plan\u00e8tes jumelles de la Terre<br \/>\n\u00ab\u00a0Nous avons enfin franchi un cap (&#8230;), qui nous a permis de s\u00e9parer le bruit stellaire [de Tau Ceti] des tr\u00e8s faibles signaux g\u00e9n\u00e9r\u00e9s par l&rsquo;attraction gravitationnelles des plan\u00e8tes en orbite\u00a0\u00bb, se f\u00e9licite Steven Vogt, co-auteur de l&rsquo;\u00e9tude et professeur d&rsquo;astronomie et d&rsquo;astrophysique \u00e0 l&rsquo;Universit\u00e9 de Californie \u00e0 Santa Cruz.<\/p>\n<p>source :&nbsp;<a href=\"http:\/\/www.lexpress.fr\/actualite\/sciences\/deux-planetes-potentiellement-habitables-a-12-annees-lumiere-de-la-terre_1934463.html\" target=\"_blank\" rel=\"noopener\">http:\/\/www.lexpress.fr\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"15648\">(432)<\/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>Le syst\u00e8me de Tau Ceti poss\u00e8de quatre plan\u00e8tes, dont deux pourraient potentiellement abriter la vie extraterrestre. L&rsquo;\u00e9toile Tau Ceti, \u00e0&#8230;<\/p>\n","protected":false},"author":1,"featured_media":15649,"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_post_was_ever_published":false,"_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":"Deux plan\u00e8tes potentiellement habitables \u00e0 12 ann\u00e9es-lumi\u00e8re de la Terre @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}},"categories":[22],"tags":[117,359,130,121],"class_list":["post-15648","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-espace","tag-exoplanete","tag-monde","tag-planete","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/08\/tau-ceti-exoplanete.jpg?fit=700%2C700&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-44o","jetpack-related-posts":[{"id":1208,"url":"https:\/\/www.laterredufutur.com\/accueil\/letoile-tau-ceti-abrite-au-moins-une-planete-habitable\/","url_meta":{"origin":15648,"position":0},"title":"L&rsquo;\u00e9toile Tau Ceti abrite au moins une plan\u00e8te habitable","author":"Admin","date":"30 d\u00e9cembre 2012","format":false,"excerpt":"Noctambules et astronomes ont longtemps cru que Tau Ceti, \u00e9toile visible \u00e0 l'\u0153il nu depuis la Terre, brillait seule dans la nuit. Des chercheurs viennent d'y d\u00e9couvrir cinq plan\u00e8tes en orbite, dont l'une situ\u00e9e en zone \"habitable\", selon une \u00e9tude publi\u00e9e mercredi 19 d\u00e9cembre 2012 par l'universit\u00e9 britannique du Hertfordshire.","rel":"","context":"Dans &quot;Espace&quot;","block_context":{"text":"Espace","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/espace\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":14798,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-nasa-annonce-la-decouverte-de-7-exoplanetes-habitables-au-sein-dune-meme-etoile\/","url_meta":{"origin":15648,"position":1},"title":"La Nasa annonce la d\u00e9couverte de 7 exoplan\u00e8tes habitables au sein d&rsquo;un m\u00eame syst\u00e8me solaire","author":"Admin","date":"22 f\u00e9vrier 2017","format":false,"excerpt":"7 plan\u00e8tes de la taille de la Terre en orbite autour d'une seule \u00e9toile ! Dans l'une des d\u00e9couvertes les plus importantes des exoplan\u00e8tes \u00e0 ce jour, la NASA vient d'annoncer que pas une, mais sept plan\u00e8tes de la taille de la Terre ont \u00e9t\u00e9 trouv\u00e9es orbitant autour de la\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\/02\/exoplanete.jpg?fit=1024%2C415&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/exoplanete.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/exoplanete.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/02\/exoplanete.jpg?fit=1024%2C415&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":15648,"position":2},"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":1613,"url":"https:\/\/www.laterredufutur.com\/accueil\/2-milliards-de-planetes-terre-dans-notre-galaxie\/","url_meta":{"origin":15648,"position":3},"title":"2 milliards de plan\u00e8tes Terre dans notre galaxie","author":"Admin","date":"5 novembre 2013","format":false,"excerpt":"A l'heure o\u00f9 le film Gravity \u2013 qui raconte une exp\u00e9dition \u00e0 bord d'une navette spatiale qui tourne \u00e0 la catastrophe \u2013 fait salle comble et a d\u00e9j\u00e0 propuls\u00e9 plus d'un million de spectateurs fran\u00e7ais dans l'espace, une \u00e9tude estime qu'au moins 2 milliards de plan\u00e8tes de taille terrestre, en\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\/2013\/11\/exoplanete-type-terre.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":19587,"url":"https:\/\/www.laterredufutur.com\/accueil\/lexoplanete-gj-357d-pourrait-abriter-la-vie\/","url_meta":{"origin":15648,"position":4},"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":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":15648,"position":5},"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":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/15648","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=15648"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/15648\/revisions"}],"predecessor-version":[{"id":15650,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/15648\/revisions\/15650"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/15649"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=15648"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=15648"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=15648"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}