{"id":2400,"date":"2015-01-06T23:00:00","date_gmt":"2015-01-06T22:00:00","guid":{"rendered":"http:\/\/www.laterredufutur.com\/wordpress\/?p=2400"},"modified":"2015-04-10T09:33:23","modified_gmt":"2015-04-10T07:33:23","slug":"kepler-detecte-deux-planetes-presque-identiques-a-la-terre","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/kepler-detecte-deux-planetes-presque-identiques-a-la-terre\/","title":{"rendered":"Kepler d\u00e9tecte deux plan\u00e8tes presque identiques \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 style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><img decoding=\"async\" style=\"border: 0px; float: left;\" src=\"http:\/\/www.laterredufutur.com\/html\/phpBB3\/download\/file.php?id=397\" alt=\"eau-planet.JPG\" width=\"120\" border=\"0\" \/>Taille: comparable \u00e0 la Terre. Composition: sans doute rocheuse. Temp\u00e9rature: agr\u00e9able. Mardi 6 janvier 2014, des scientifiques ont annonc\u00e9 la d\u00e9couverte de deux plan\u00e8tes lointaines qui semblent \u00eatre d&rsquo;excellentes candidates pour offrir des conditions propices \u00e0 la vie. La premi\u00e8re serait m\u00eame la plan\u00e8te la plus semblable \u00e0 la Terre d\u00e9tect\u00e9e jusqu&rsquo;\u00e0 pr\u00e9sent.<\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\">\u00a0<\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\">\u00a0<\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\">Situ\u00e9es \u00e0 pr\u00e8s de 500 ann\u00e9es-lumi\u00e8re de la Terre dans la constellation de la Lyre, Kepler 440b et 443b ont \u00e9t\u00e9 d\u00e9tect\u00e9es par la sonde am\u00e9ricaine qui a repris du service mi-d\u00e9cembre. Selon les chercheurs du Harvard-Smithsonian Center for Astrophysics, la premi\u00e8re a un diam\u00e8tre 12% plus grand que celui de la Terre, a 70% de chances d&rsquo;\u00eatre rocheuse et re\u00e7oit 30% de lumi\u00e8re de plus que la Terre. Sa grande soeur est un peu plus grosse et re\u00e7oit moins de lumi\u00e8re, mais elle a plus de chance de se trouver dans la zone habitable, o\u00f9 l&rsquo;eau liquide peut exister.<\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\">Une ann\u00e9e de 35 jours<\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\">Les deux plan\u00e8tes orbitent relativement pr\u00e8s de leur \u00e9toile, une naine orange, qui \u00e9met moins de lumi\u00e8re que notre Soleil. Kepler 440b en fait le tour en 101 jours et Kepler 443b met 177 jours. Le syst\u00e8me compte six autres plan\u00e8tes, qui sont elles, a priori, inhabitables.<\/span><\/span><\/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 style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\">La m\u00e9thode employ\u00e9e est celle du Transit. <a href=\"http:\/\/www.openexoplanetcatalogue.com\/system.html?id=Kepler-443%20b\" target=\"_blank\">443b<\/a> repr\u00e9sente un rayon de 2,33 rayons terrestres. <\/span><\/span><span style=\"color: #000000; font-size: small; line-height: 1.3em;\">Ce syst\u00e8me plan\u00e9taire reste n\u00e9anmoins tr\u00e8s \u00e9loign\u00e9 de la Terre \u00e0 2541 ann\u00e9es lumi\u00e8res.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000; font-size: small; line-height: 1.3em;\"><a href=\"http:\/\/www.openexoplanetcatalogue.com\/system.html?id=Kepler-440%20b\">440b<\/a> repr\u00e9sente un rayon de 1,86 rayons terrestres et son syst\u00e8me plan\u00e9taire est \u00e0 851 ann\u00e9es lumi\u00e8res de la Terre.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"line-height: 1.5;\">Le probl\u00e8me, c&rsquo;est que les astronomes ne peuvent pas, pour l&rsquo;instant, observer de telles plan\u00e8tes directement. Ils ne savent donc pas si les deux candidates disposent d&rsquo;une atmosph\u00e8re protectrice. Pour cela, il faudra notamment attendre le lancement du successeur d&rsquo;Hubble, le James Webb Space Telescope, en 2018. D&rsquo;ici l\u00e0, on peut toujours r\u00eaver.<\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\">Le suivi des d\u00e9couvertes des exoplan\u00e8tes se fait dans <a href=\"http:\/\/www.laterredufutur.com\/html\/phpBB3\/viewtopic.php?f=11&amp;t=1780&amp;start=20\">les forums de TDF depuis 2014<\/a><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\">La d\u00e9couverte des exoplan\u00e8tes s&rsquo;est particuli\u00e8rement acc\u00e9l\u00e9r\u00e9e ces derni\u00e8res ann\u00e9es :<\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><img decoding=\"async\" style=\"border: 0px;\" src=\"http:\/\/www.laterredufutur.com\/html\/phpBB3\/download\/file.php?id=379\" alt=\"exoplanet.jpg\" width=\"450\" border=\"0\" \/><br \/>\n<\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\">source :\u00a0http:\/\/www.20minutes.fr\/<\/span><\/span><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"2400\">(352)<\/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 style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><img decoding=\"async\" src=\"..\/html\/phpBB3\/download\/file.php?id=397\" border=\"0\" alt=\"eau-planet.JPG\" width=\"120\" style=\"border: 0px; float: left;\" \/>Taille: comparable \u00e0 la Terre. Composition: sans doute rocheuse. Temp\u00e9rature: agr\u00e9able. Mardi 6 janvier 2014, des scientifiques ont annonc\u00e9 la d\u00e9couverte de deux plan\u00e8tes lointaines qui semblent \u00eatre d&rsquo;excellentes candidates pour offrir des conditions propices \u00e0 la vie. La premi\u00e8re serait m\u00eame la plan\u00e8te la plus semblable \u00e0 la Terre d\u00e9tect\u00e9e jusqu&rsquo;\u00e0 pr\u00e9sent.<\/span><\/span><\/p>\n<p style=\"text-align: justify;\">\u00a0<\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><br \/><\/span><\/span><\/p>\n<p style=\"text-align: justify;\">\n","protected":false},"author":1,"featured_media":669,"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":"","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":[2330,2331,1948,875,962,2329,1370,75],"class_list":["post-2400","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-440b","tag-443b","tag-extrasolaire","tag-kepler","tag-lumiere","tag-naine-orange","tag-planetes","tag-terre","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2011\/12\/kepler-0.jpg?fit=494%2C351&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-CI","jetpack-related-posts":[{"id":674,"url":"https:\/\/www.laterredufutur.com\/accueil\/kepler-22b-une-nouvelle-terre-decouverte-dans-une-zone-lhabitabler\/","url_meta":{"origin":2400,"position":0},"title":"Kepler 22b, une nouvelle Terre d\u00e9couverte dans une zone \u00abhabitable\u00bb","author":"Admin","date":"6 d\u00e9cembre 2011","format":false,"excerpt":"Des astronomes de la NASA ont annonc\u00e9 lundi 5 d\u00e9cembre avoir d\u00e9couvert une plan\u00e8te semblable \u00e0 la Terre, \u00e0 l'ext\u00e9rieur du syst\u00e8me solaire, dont la taille et la distance qui la s\u00e9pare de son \u00e9toile rend \u00abhabitable\u00bb. En outre, elle se trouve \u00e0 une distance de 600 ann\u00e9es-lumi\u00e8res de notre\u2026","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":7809,"url":"https:\/\/www.laterredufutur.com\/accueil\/dites-bonjour-a-la-terre-2-0-kepler-vient-de-faire-une-decouverte-historique\/","url_meta":{"origin":2400,"position":1},"title":"Dites bonjour \u00e0 la Terre 2.0, Kepler vient de faire une d\u00e9couverte historique","author":"Admin","date":"23 juillet 2015","format":false,"excerpt":"Rappelez-vous le nom de Kepler 452b. Parce que dans nos recherches pour d\u00e9couvrir si nous sommes seuls dans cet univers si vaste et si fascinant, un v\u00e9ritable\u00a0monde\u00a0h\u00e9bergeant de la vie et parmi d'innombrables plan\u00e8tes mortes et inhabitables, nous pouvons enfin avoir un v\u00e9ritable candidat \u00e0 la Terre 2.0. Pour 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\/2015\/07\/Kepler-452b.jpg?fit=640%2C425&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/Kepler-452b.jpg?fit=640%2C425&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/Kepler-452b.jpg?fit=640%2C425&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":12581,"url":"https:\/\/www.laterredufutur.com\/accueil\/lexoplanete-kepler-62f-est-elle-un-futur-monde-habitable\/","url_meta":{"origin":2400,"position":2},"title":"L&rsquo;exoplan\u00e8te Kepler-62f est-elle un futur monde habitable?","author":"Admin","date":"21 juin 2016","format":false,"excerpt":"Situ\u00e9e \u00e0 \"seulement\" 1200 ann\u00e9es-lumi\u00e8re de la Terre, Kepler-62f pourrait avoir une temp\u00e9rature compatible avec la pr\u00e9sence de l'eau. Elle pourrait donc non seulement accueillir l'homme, mais aussi d'autres formes de vie. Sommes-nous seuls dans l'Univers? Si l'Humanit\u00e9 a d\u00e9j\u00e0 r\u00e9pertori\u00e9 3422 plan\u00e8tes situ\u00e9es hors de notre syst\u00e8me solaire, pour\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\/06\/kepler-62f-exploplanete.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\/2016\/06\/kepler-62f-exploplanete.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/kepler-62f-exploplanete.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/kepler-62f-exploplanete.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/kepler-62f-exploplanete.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":23971,"url":"https:\/\/www.laterredufutur.com\/accueil\/lexoplanete-la-plus-semblable-a-la-terre-kepler-442b\/","url_meta":{"origin":2400,"position":3},"title":"L&rsquo;exoplan\u00e8te la plus semblable \u00e0 la Terre : Kepler 442B","author":"Admin","date":"18 avril 2022","format":false,"excerpt":"Lanc\u00e9 le 25 d\u00e9cembre dernier, le t\u00e9lescope James Webb est arriv\u00e9 comme pr\u00e9vu \u00e0 son point de destination, au point de Lagrange L2. Il aligne actuellement les 18 segments qui composent son miroir primaire et sera pr\u00eat \u00e0 scruter l\u2019Univers d\u2019ici quelques mois. Entre autres objectifs scientifiques, il servira \u00e0\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\/04\/kepler-442b.jpg?fit=1024%2C570&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/kepler-442b.jpg?fit=1024%2C570&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/kepler-442b.jpg?fit=1024%2C570&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/kepler-442b.jpg?fit=1024%2C570&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":2471,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouvertes-de-4-nouvelles-planetes-habitables\/","url_meta":{"origin":2400,"position":4},"title":"D\u00e9couvertes de 4 nouvelles plan\u00e8tes habitables","author":"Admin","date":"12 f\u00e9vrier 2015","format":false,"excerpt":"Les plan\u00e8tes suivantes viennent d'\u00eatre d\u00e9couvertes. Ces plan\u00e8tes telluriques de type Terre ou super Terre ont la particularit\u00e9 de se trouver dans la zone habitable de leur \u00e9toile. Le point commun de ces plan\u00e8tes est la m\u00e9thode de d\u00e9couverte appel\u00e9 Transit. Ces plan\u00e8tes ont \u00e9t\u00e9 d\u00e9couvertes fin janvier 2015 par\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\/2015\/02\/laterredufutur.com_photos_sonde-kepler-1.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":1848,"url":"https:\/\/www.laterredufutur.com\/accueil\/715-nouvelles-planetes-extrasolaires\/","url_meta":{"origin":2400,"position":5},"title":"715 nouvelles plan\u00e8tes extrasolaires","author":"Admin","date":"4 mars 2014","format":false,"excerpt":"Gr\u00e2ce au satellite de la Nasa Kepler, le nombre de plan\u00e8tes extrasolaires connues vient pratiquement de doubler, annonce une \u00e9quipe am\u00e9ricaine. \u00ab En analysant les donn\u00e9es de Kepler, nous avons d\u00e9tect\u00e9 et confirm\u00e9 715 nouvelles plan\u00e8tes\", r\u00e9v\u00e8le Jason Rowe, au centre de recherche Nasa Ames (Californie). Alors qu'il a fallu\u2026","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":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/2400","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=2400"}],"version-history":[{"count":2,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/2400\/revisions"}],"predecessor-version":[{"id":3237,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/2400\/revisions\/3237"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/669"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=2400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=2400"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=2400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}