{"id":14689,"date":"2017-02-12T00:00:58","date_gmt":"2017-02-11T23:00:58","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=14689"},"modified":"2017-01-28T20:28:59","modified_gmt":"2017-01-28T19:28:59","slug":"lexoplanete-j1407b-le-seigneur-des-anneaux","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/lexoplanete-j1407b-le-seigneur-des-anneaux\/","title":{"rendered":"L&rsquo;exoplan\u00e8te J1407b, le seigneur des anneaux"},"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>L&rsquo;exoplan\u00e8te J1407b a un diam\u00e8tre 200 fois plus imposant que ceux de Saturne. elle a \u00e9t\u00e9 d\u00e9couverte autour d&rsquo;une plan\u00e8te situ\u00e9e \u00e0 plus de 400 ann\u00e9es-lumi\u00e8re de la Terre.<\/p>\n<p>\u00ab\u00a0J1407b est beaucoup plus grande que Saturne ou Jupiter et son syst\u00e8me d\u2019anneaux est beaucoup plus grand que celui de Saturne. C\u2019est en quelque sorte une super-Saturne\u00a0\u00bb explique l\u2019astronome. Vu son \u00e9loignement, elle n\u2019a pas \u00e9t\u00e9 observ\u00e9e directement mais a \u00e9t\u00e9 d\u00e9couverte dans le cadre du projet superWASP qui est con\u00e7u pour d\u00e9tecter les exoplan\u00e8tes g\u00e9antes quand elles transitent devant leur \u00e9toile. Elles provoquent alors une l\u00e9g\u00e8re diminution de la luminosit\u00e9 des \u00e9toiles qui peut \u00eatre observ\u00e9e par les t\u00e9lescopes.<\/p>\n<p>C\u2019est le profil tr\u00e8s particulier de la variation de luminosit\u00e9 qui a conduit les astronomes \u00e0 conclure que la plan\u00e8te J1047b \u00e9tait dot\u00e9e d\u2019anneaux. \u00ab\u00a0L&rsquo;\u00e9toile est beaucoup trop loin pour les observer mais nous pouvons en en faire un mod\u00e8le d\u00e9taill\u00e9 d\u2019apr\u00e8s les variations rapides de luminosit\u00e9 quand la plan\u00e8te passe devant son \u00e9toile\u00a0\u00bb r\u00e9sume Matthew Kenworthy, de l\u2019Observatoire de Leyde aux Pays-Bas qui a particip\u00e9 \u00e0 la derni\u00e8re \u00e9tude. Selon les analyses, le diam\u00e8tre du syst\u00e8me d\u2019anneaux avoisine les 120 millions de kilom\u00e8tres ! Pratiquement 200 fois les dimensions de ceux de Saturne. \u00ab\u00a0Si nous pouvions remplacer les anneaux de Saturne par ceux-l\u00e0, ils seraient facilement visibles et apparaitraient plusieurs fois plus grands que la pleine Lune\u00a0\u00bb ajoute-t-il.<\/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><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"14690\" 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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;}\" data-image-title=\"J1407b-exoplanete-super-anneaux-2\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-2.jpg?fit=636%2C358&amp;ssl=1\" class=\"alignnone size-full wp-image-14691\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-2.jpg?resize=636%2C358\" alt=\"\" width=\"636\" height=\"358\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-2.jpg?w=636&amp;ssl=1 636w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-2.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-2.jpg?resize=580%2C326&amp;ssl=1 580w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-2.jpg?resize=174%2C98&amp;ssl=1 174w\" sizes=\"auto, (max-width: 636px) 100vw, 636px\" \/> <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"14692\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/lexoplanete-j1407b-le-seigneur-des-anneaux\/j1407b-exoplanete-super-anneaux-3\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-3.jpg?fit=1280%2C720&amp;ssl=1\" data-orig-size=\"1280,720\" data-comments-opened=\"1\" 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;}\" data-image-title=\"J1407b-exoplanete-super-anneaux-3\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-3.jpg?fit=800%2C450&amp;ssl=1\" class=\"alignnone size-full wp-image-14692\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-3.jpg?resize=1280%2C720\" alt=\"\" width=\"1280\" height=\"720\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-3.jpg?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-3.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-3.jpg?resize=768%2C432&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-3.jpg?resize=800%2C450&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-3.jpg?resize=580%2C326&amp;ssl=1 580w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-3.jpg?resize=174%2C98&amp;ssl=1 174w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/> <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"14693\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/lexoplanete-j1407b-le-seigneur-des-anneaux\/j1407b-exoplanete-super-anneaux-4\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-4.jpg?fit=1280%2C720&amp;ssl=1\" data-orig-size=\"1280,720\" data-comments-opened=\"1\" 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;}\" data-image-title=\"J1407b-exoplanete-super-anneaux-4\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-4.jpg?fit=800%2C450&amp;ssl=1\" class=\"alignnone size-full wp-image-14693\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-4.jpg?resize=1280%2C720\" alt=\"\" width=\"1280\" height=\"720\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-4.jpg?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-4.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-4.jpg?resize=768%2C432&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-4.jpg?resize=800%2C450&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-4.jpg?resize=580%2C326&amp;ssl=1 580w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-4.jpg?resize=174%2C98&amp;ssl=1 174w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/> <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"14694\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/lexoplanete-j1407b-le-seigneur-des-anneaux\/j1407b-exoplanete-super-anneaux-5\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-5.jpg?fit=1280%2C720&amp;ssl=1\" data-orig-size=\"1280,720\" data-comments-opened=\"1\" 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;}\" data-image-title=\"J1407b-exoplanete-super-anneaux-5\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-5.jpg?fit=800%2C450&amp;ssl=1\" class=\"alignnone size-full wp-image-14694\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-5.jpg?resize=1280%2C720\" alt=\"\" width=\"1280\" height=\"720\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-5.jpg?w=1280&amp;ssl=1 1280w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-5.jpg?resize=300%2C169&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-5.jpg?resize=768%2C432&amp;ssl=1 768w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-5.jpg?resize=800%2C450&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-5.jpg?resize=580%2C326&amp;ssl=1 580w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-5.jpg?resize=174%2C98&amp;ssl=1 174w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p>source :&nbsp;<a href=\"http:\/\/www.sciencesetavenir.fr\/espace\/le-veritable-seigneur-des-anneaux-c-est-la-planete-j1407b_34451\" target=\"_blank\">http:\/\/www.sciencesetavenir.fr\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"14689\">(1650)<\/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>L&rsquo;exoplan\u00e8te J1407b a un diam\u00e8tre 200 fois plus imposant que ceux de Saturne. elle a \u00e9t\u00e9 d\u00e9couverte autour d&rsquo;une plan\u00e8te&#8230;<\/p>\n","protected":false},"author":1,"featured_media":14694,"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":"L'exoplan\u00e8te J1407b, le seigneur des anneaux @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},"jetpack_post_was_ever_published":false},"categories":[22],"tags":[4326,117,359,6314],"class_list":["post-14689","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-anneaux","tag-espace","tag-exoplanete","tag-j1407b","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/01\/J1407b-exoplanete-super-anneaux-5.jpg?fit=1280%2C720&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-3OV","jetpack-related-posts":[{"id":18152,"url":"https:\/\/www.laterredufutur.com\/accueil\/quand-les-anneaux-de-saturne-cree-un-mystere-de-plus\/","url_meta":{"origin":14689,"position":0},"title":"Quand les anneaux de Saturne cr\u00e9\u00e9 un myst\u00e8re de plus&#8230;","author":"Admin","date":"29 janvier 2019","format":false,"excerpt":"Parmi les anneaux des quatre plan\u00e8tes g\u00e9antes gazeuses de notre syst\u00e8me solaire ils sont reconnaissables entre tous.Tous les grands noms de l\u2019astronomie se sont pench\u00e9s sur les anneaux de Saturne pour essayer de les comprendre. Mais certaines publications scientifiques posent plus de questions qu\u2019elles n\u2019en r\u00e9solvent\u2026 En utilisant les donn\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\/2017\/05\/saturne.jpg?fit=1100%2C578&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/05\/saturne.jpg?fit=1100%2C578&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/05\/saturne.jpg?fit=1100%2C578&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/05\/saturne.jpg?fit=1100%2C578&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/05\/saturne.jpg?fit=1100%2C578&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":24404,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-lune-perdue-pourrait-enfin-resoudre-letrange-mystere-de-saturne-et-de-ses-anneaux\/","url_meta":{"origin":14689,"position":1},"title":"Une lune perdue pourrait enfin r\u00e9soudre l&rsquo;\u00e9trange myst\u00e8re de Saturne et de ses anneaux","author":"Admin","date":"15 septembre 2022","format":false,"excerpt":"De tous les anneaux du syst\u00e8me solaire, ceux de Saturne sont, sans conteste, les plus spectaculaires. Contrairement aux minces cercles de poussi\u00e8re et de roche qui encerclent Jupiter, Uranus, Neptune et m\u00eame une plan\u00e8te naine de la ceinture de Kuiper nomm\u00e9e Haumea, le syst\u00e8me d'anneaux de Saturne, aux couleurs particuli\u00e8res,\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\/09\/lune-anneaux-saturne.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\/2022\/09\/lune-anneaux-saturne.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/lune-anneaux-saturne.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/lune-anneaux-saturne.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":9701,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-decouverte-de-nouveaux-mondes-saccelere-deja-2-000-exoplanetes-recensees\/","url_meta":{"origin":14689,"position":2},"title":"La d\u00e9couverte de nouveaux mondes s&rsquo;acc\u00e9l\u00e8re : d\u00e9j\u00e0 2 000 exoplan\u00e8tes recens\u00e9es !","author":"Admin","date":"2 d\u00e9cembre 2015","format":false,"excerpt":"20 ans apr\u00e8s la d\u00e9couverte de la premi\u00e8re exoplan\u00e8te, l'Encyclop\u00e9die des plan\u00e8tes extrasolaires, tenue minutieusement par Jean Schneider, astronome de l'Observatoire de Paris, en d\u00e9nombre aujourd'hui plus de 2 000, alors que les r\u00e9centes \u00e9tudes estiment leur nombre \u00e0 plusieurs milliards ! La premi\u00e8re exoplan\u00e8te, appel\u00e9e 51 Peg b, fut\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\/12\/exoplanetes-Terre.jpg?fit=900%2C617&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/exoplanetes-Terre.jpg?fit=900%2C617&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/exoplanetes-Terre.jpg?fit=900%2C617&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/12\/exoplanetes-Terre.jpg?fit=900%2C617&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":13743,"url":"https:\/\/www.laterredufutur.com\/accueil\/la-9eme-planete-est-une-exoplanete-volee-par-le-soleil\/","url_meta":{"origin":14689,"position":3},"title":"La 9eme plan\u00e8te est une exoplan\u00e8te vol\u00e9e par le Soleil ?","author":"Admin","date":"4 novembre 2016","format":false,"excerpt":"Des nouvelles de notre hypoth\u00e9tique 9\u00e8me plan\u00e8te ? Oui ! Ce serait, en fait, une exoplan\u00e8te vol\u00e9e \u00e0 un autre syst\u00e8me il y a 4,5 milliards d\u2019ann\u00e9es. On vous en dit plus ! On vous l\u2019avait dit, les scientifiques recherchent activement l\u2019\u00e9ventuelle 9\u00e8me plan\u00e8te qui se trouverait dans notre syst\u00e8me\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\/10\/planete-neuf.jpg?fit=850%2C478&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/10\/planete-neuf.jpg?fit=850%2C478&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/10\/planete-neuf.jpg?fit=850%2C478&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/10\/planete-neuf.jpg?fit=850%2C478&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":23618,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-soleil-avait-des-anneaux-semblables-a-ceux-de-saturne\/","url_meta":{"origin":14689,"position":4},"title":"Le Soleil avait des anneaux semblables \u00e0 ceux de Saturne","author":"Admin","date":"9 janvier 2022","format":false,"excerpt":"Selon une nouvelle \u00e9tude, avant que la Terre et les autres plan\u00e8tes de notre syst\u00e8me solaire n'existent, le Soleil \u00e9tait peut-\u00eatre entour\u00e9 d'anneaux g\u00e9ants de poussi\u00e8re semblables \u00e0 ceux de Saturne. Ces anneaux de poussi\u00e8re ont peut-\u00eatre emp\u00each\u00e9 la Terre de devenir une \"super-Terre\" - un type de plan\u00e8te qui\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\/01\/soleil-et-supers-anneaux.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\/2022\/01\/soleil-et-supers-anneaux.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/01\/soleil-et-supers-anneaux.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/01\/soleil-et-supers-anneaux.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":24359,"url":"https:\/\/www.laterredufutur.com\/accueil\/voici-la-premiere-image-directe-dune-exoplanete-par-le-telescope-james-webb\/","url_meta":{"origin":14689,"position":5},"title":"Voici la premi\u00e8re image directe d&rsquo;une exoplan\u00e8te par le t\u00e9lescope James Webb","author":"Admin","date":"3 septembre 2022","format":false,"excerpt":"Le JWST a \u00e9galement obtenu le premier spectre direct d'un objet en orbite autour d'une \u00e9toile dans un autre syst\u00e8me solaire. Il s'agit de la premi\u00e8re image d'une exoplan\u00e8te prise par le t\u00e9lescope spatial James Webb. \"Nous mesurons en fait les photons de l'atmosph\u00e8re de la plan\u00e8te elle-m\u00eame\", explique l'astronome\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\/09\/premiere-exoplanete-observee-par-le-telescope-james-webb.jpg?fit=1030%2C580&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/premiere-exoplanete-observee-par-le-telescope-james-webb.jpg?fit=1030%2C580&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/premiere-exoplanete-observee-par-le-telescope-james-webb.jpg?fit=1030%2C580&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/premiere-exoplanete-observee-par-le-telescope-james-webb.jpg?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\/14689","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=14689"}],"version-history":[{"count":2,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/14689\/revisions"}],"predecessor-version":[{"id":14696,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/14689\/revisions\/14696"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/14694"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=14689"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=14689"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=14689"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}