{"id":19541,"date":"2019-09-09T17:00:38","date_gmt":"2019-09-09T15:00:38","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=19541"},"modified":"2019-08-15T17:23:39","modified_gmt":"2019-08-15T15:23:39","slug":"60-milliards-de-planetes-habitables-dans-notre-galaxie","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/60-milliards-de-planetes-habitables-dans-notre-galaxie\/","title":{"rendered":"60 milliards de plan\u00e8tes habitables dans notre galaxie"},"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>Si l\u2019humanit\u00e9 doit un jour d\u00e9m\u00e9nager, elle aura l\u2019embarras du choix. Notre galaxie, la Voie lact\u00e9e, abriterait en effet plus de 60 milliard d\u2019exoplan\u00e8tes habitables. Le Kepler Spacecraft, d\u00e9partement de la Nasa charg\u00e9 de r\u00e9f\u00e9rencer les plan\u00e8tes habitables a publi\u00e9 une nouvelle \u00e9tude.<\/p>\n<p>Jusque l\u00e0, la communaut\u00e9 scientifique estimait que chaque syst\u00e8me solaire, autour d\u2019\u00e9toiles dites \u00ab naines rouges \u00bb (moins brillantes que notre Soleil), abritait en moyenne une plan\u00e8te habitable. Mais cette nouvelle \u00e9tude double l\u2019estimation, consid\u00e9rant que certaines plan\u00e8tes aux atmosph\u00e8res nuageuses peuvent \u00e9galement accueillir des formes de vie extra terrestres.<\/p>\n<p>Sous les nuages, la vie<\/p>\n<p>\u00abLes nuages causent \u00e0 la fois le r\u00e9chauffement et le refroidissement de la Terre, explique Dorian Abbot, professeur en sciences g\u00e9ophysiques de l\u2019Universit\u00e9 de Chicago. Ils r\u00e9fl\u00e9chissent les rayons du soleil et refroidissent ainsi l\u2019atmosph\u00e8re, et provoquent un effet de serre qui la chauffe. Cet \u00e9quilibre est en grande partie ce qui permet \u00e0 une plan\u00e8te d\u2019accueillir la vie.\u00bb<\/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 m\u00e9moire, une plan\u00e8te est consid\u00e9r\u00e9e comme habitable lorsque sa temp\u00e9rature autorise l\u2019eau \u00e0 l\u2019\u00e9tat liquide, et n\u2019est par cons\u00e9quent ni trop loin (sinon l\u2019eau g\u00e8le), ni trop pr\u00e8s (auquel cas l\u2019eau est vapeur) de l\u2019\u00e9toile.<\/p>\n<p>Entre ombre et lumi\u00e8re, la vie aussi<\/p>\n<p>Dans cette nouvelle \u00e9tude, les chercheurs ont mis au point un syst\u00e8me de simulations qui permet d\u2019\u00e9tablir quelles plan\u00e8tes sont potentiellement habitables en fonction de leur couverture nuageuse apparente.<\/p>\n<p>M\u00eame certaines plan\u00e8tes qui montrent perp\u00e9tuellement la m\u00eame face \u00e0 leur \u00e9toile pourraient avoir une zone habitable \u00e0 la fronti\u00e8re entre h\u00e9misph\u00e8re ensoleill\u00e9 et h\u00e9misph\u00e8re sombre.<\/p>\n<p>source : <a href=\"https:\/\/www.20minutes.fr\/sciences\/1183233-20130702-20130702-60-milliard-planetes-habitables-galaxie-grace-a-nuages\" rel=\"noopener noreferrer\" target=\"_blank\">https:\/\/www.20minutes.fr\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"19541\">(958)<\/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>Si l\u2019humanit\u00e9 doit un jour d\u00e9m\u00e9nager, elle aura l\u2019embarras du choix. Notre galaxie, la Voie lact\u00e9e, abriterait en effet plus&#8230;<\/p>\n","protected":false},"author":1,"featured_media":17601,"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":"60 milliards de plan\u00e8tes habitables dans notre galaxie @Terra Projects - laterredufutur.com","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":[359,125,362,308],"class_list":["post-19541","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-exoplanete","tag-galaxie","tag-habitable","tag-vie","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/01\/exoplan%C3%A8te-ocean.jpg?fit=1900%2C1069&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-55b","jetpack-related-posts":[{"id":1613,"url":"https:\/\/www.laterredufutur.com\/accueil\/2-milliards-de-planetes-terre-dans-notre-galaxie\/","url_meta":{"origin":19541,"position":0},"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":18741,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-millions-de-planetes-potentiellement-habitables-se-cacheraient-dans-notre-galaxie\/","url_meta":{"origin":19541,"position":1},"title":"Des millions de plan\u00e8tes potentiellement habitables se cacheraient dans notre galaxie","author":"Admin","date":"2 mai 2019","format":false,"excerpt":"Une nouvelle \u00e9tude estime qu\u2019une \u00e0 trois plan\u00e8tes habitables graviteraient autour de la plupart des \u00e9toiles de notre galaxie. Dans son immensit\u00e9, la Voie lact\u00e9e abrite des centaines de milliards d\u2019\u00e9toiles dont le Soleil fait partie. En ce sens, notre syst\u00e8me solaire n\u2019est pas le seul syst\u00e8me plan\u00e9taire \u00e0 se\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\/03\/exoplanete-mondes-habitables.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\/03\/exoplanete-mondes-habitables.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/exoplanete-mondes-habitables.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/exoplanete-mondes-habitables.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/exoplanete-mondes-habitables.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":490,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-monde-extraterrestre\/","url_meta":{"origin":19541,"position":2},"title":"Un monde extraterrestre","author":"Admin","date":"1 septembre 2011","format":false,"excerpt":"Notre univers, un vaste domaine d'exploration pour notre civilisation future, dans un monde qui aurait environ 200 milliards de galaxies et une galaxie comprendrait 200 milliards d'\u00e9toiles. Il est \u00e9galement estim\u00e9 qu'il y aurait 1570 milliards de plan\u00e8tes dans notre seule galaxie. L'ironie dans ces chiffres, c'est que cela serait\u2026","rel":"","context":"Dans &quot;Monde Futur&quot;","block_context":{"text":"Monde Futur","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/monde-futur\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":1219,"url":"https:\/\/www.laterredufutur.com\/accueil\/17-milliards-de-planetes-de-taille-terrestre\/","url_meta":{"origin":19541,"position":3},"title":"17 milliards de plan\u00e8tes de taille terrestre","author":"Admin","date":"10 janvier 2013","format":false,"excerpt":"Nous sommes tr\u00e8s probablement \u00e0 la veille d'une d\u00e9couverte d'envergure, une plan\u00e8te de type Terre. A lire ce qui suit, cela semble \u00eatre une question de petites ann\u00e9es, mois ou bien m\u00eame quelques jours.\u00a017 milliards de plan\u00e8tes de taille terrestre dans la Voie lact\u00e9e. Elles ne sont pas toutes situ\u00e9es\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\/2011\/05\/gliese581.jpg?fit=300%2C216&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":21044,"url":"https:\/\/www.laterredufutur.com\/accueil\/il-y-a-des-milliards-de-terres-dans-notre-galaxie\/","url_meta":{"origin":19541,"position":4},"title":"Il y a des milliards de Terres dans notre galaxie","author":"Admin","date":"4 juillet 2020","format":false,"excerpt":"Selon de nouvelles recherches, il pourrait y avoir jusqu'\u00e0 six milliards de plan\u00e8tes semblables \u00e0 la Terre en orbite autour d'\u00e9toiles dans notre galaxie. Notre Voie lact\u00e9e compte jusqu'\u00e0 400 milliards d'\u00e9toiles, dont 7% de type G. Cela signifie que moins de six milliards d'\u00e9toiles peuvent avoir des plan\u00e8tes semblables\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\/03\/exoplanete-mondes-habitables.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\/03\/exoplanete-mondes-habitables.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/exoplanete-mondes-habitables.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/exoplanete-mondes-habitables.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/exoplanete-mondes-habitables.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":21566,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-centaines-de-millions-de-planetes-habitables-dans-notre-galaxie\/","url_meta":{"origin":19541,"position":5},"title":"Des centaines de millions de plan\u00e8tes habitables dans notre galaxie","author":"Admin","date":"12 novembre 2020","format":false,"excerpt":"\u00c0 travers une nouvelle \u00e9tude, la\u00a0NASA\u00a0affirme qu\u2019il existerait potentiellement 300 millions de plan\u00e8tes habitables dans notre galaxie. Cette derni\u00e8re est bas\u00e9e sur les donn\u00e9es enregistr\u00e9es par le t\u00e9lescope Kepler, envoy\u00e9 dans l\u2019espace en 2009 avant de terminer sa mission fin 2018 pour cause de manque de carburant, dont l\u2019objectif principal\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\/11\/exoplanetes-habitables.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\/2020\/11\/exoplanetes-habitables.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/11\/exoplanetes-habitables.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/11\/exoplanetes-habitables.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/11\/exoplanetes-habitables.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/19541","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=19541"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/19541\/revisions"}],"predecessor-version":[{"id":19542,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/19541\/revisions\/19542"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/17601"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=19541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=19541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=19541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}