{"id":9266,"date":"2015-11-12T18:41:37","date_gmt":"2015-11-12T17:41:37","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=9266"},"modified":"2015-11-12T18:41:37","modified_gmt":"2015-11-12T17:41:37","slug":"a-80-annees-lumiere-de-la-terre-une-planete-sans-etoile-revele-un-bulletin-meteo-chaotique","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/a-80-annees-lumiere-de-la-terre-une-planete-sans-etoile-revele-un-bulletin-meteo-chaotique\/","title":{"rendered":"\u00c0 80 ann\u00e9es-lumi\u00e8re de la Terre, une plan\u00e8te sans \u00e9toile r\u00e9v\u00e8le un bulletin m\u00e9t\u00e9o chaotique"},"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;\">Selon une \u00e9quipe de chercheurs, une g\u00e9ante gazeuse d\u00e9pourvue d\u2019\u00e9toile serait balay\u00e9e par d\u2019immenses temp\u00eates de m\u00e9tal en fusion, o\u00f9 la temp\u00e9rature d\u00e9passerait les 800\u00b0 Celsius. Rien que \u00e7a.<\/p>\n<p style=\"text-align: justify;\">Bienvenue sur PSO J318.5-22. En enfer donc. Et pour cause, la g\u00e9ante gazeuse d\u00e9pourvue d\u2019\u00e9toile essuierait des temp\u00eates de m\u00e9tal en fusion, o\u00f9 la temp\u00e9rature d\u00e9passerait les 800 degr\u00e9s Celsius. Grosse, grosse canicule. Une d\u00e9couverte que nous devons aux astronomes de l\u2019universit\u00e9 d\u2019\u00c9dimbourg, qui \u00e9tudient les variations de luminosit\u00e9 de cette plan\u00e8te solitaire.<\/p>\n<p style=\"text-align: justify;\">Esseul\u00e9e, la belle n\u2019orbite autour d\u2019aucune \u00e9toile. D\u00e9couverte en 2013, PSO J318.5-22 est une g\u00e9ante gazeuse situ\u00e9e \u00e0 environ 80 ann\u00e9es-lumi\u00e8re de la Terre, qui serait \u00e0 peu pr\u00e8s 6 fois plus massive que Jupiter. Gr\u00e2ce aux t\u00e9lescopes, les chercheurs ont pu capturer des centaines d\u2019images infrarouges de la g\u00e9ante gazeuse, et en d\u00e9duire la temp\u00e9rature, l\u2019activit\u00e9 et la composition de son atmosph\u00e8re. Selon eux, leurs r\u00e9sultats indiquent que PSO J318.5-22 est couverte de couches nuageuses de diff\u00e9rentes \u00e9paisseurs, dont certaines contiendraient des m\u00e9taux en fusion. Concernant la temp\u00e9rature en surface, elle pourrait atteindre les 815\u00b0 Celsius\u2009!<\/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;\">Pas question d\u2019y trouver de la vie donc. Mais ces observations sont prometteuses, et nous serons bient\u00f4t en mesure d\u2019\u00e9tablir des bulletins m\u00e9t\u00e9o sur d\u2019autres exoplan\u00e8tes. D\u2019ailleurs, les chercheurs travaillent d\u2019ores et d\u00e9j\u00e0 \u00e0 l\u2019extension de cette technique pour des plan\u00e8tes g\u00e9antes autour de jeunes \u00e9toiles, pour, finalement, d\u00e9tecter le climat d\u2019exoplan\u00e8tes semblables \u00e0 la Terre qui pourraient abriter la vie.<\/p>\n<p style=\"text-align: justify;\"><a href=\"http:\/\/www.laterredufutur.com\/accueil\/\" target=\"_blank\">TDF<\/a><\/p>\n<p>source :\u00a0<a href=\"http:\/\/www.buzznova.biz\/\" target=\"_blank\">http:\/\/www.buzznova.biz\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"9266\">(381)<\/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>Selon une \u00e9quipe de chercheurs, une g\u00e9ante gazeuse d\u00e9pourvue d\u2019\u00e9toile serait balay\u00e9e par d\u2019immenses temp\u00eates de m\u00e9tal en fusion, o\u00f9&#8230;<\/p>\n","protected":false},"author":1,"featured_media":9267,"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":"\u00c0 80 ann\u00e9es-lumi\u00e8re de la #Terre, une #plan\u00e8te sans \u00e9toile r\u00e9v\u00e8le un bulletin m\u00e9t\u00e9o chaotique @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":[252,117,359,5040,124,121,5041,226],"class_list":["post-9266","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-atmosphere","tag-espace","tag-exoplanete","tag-geante-gazeuse","tag-jupiter","tag-planete","tag-pso-j318-5-22","tag-temperature","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/11\/comparaison_entre_jupiter_pso-j318-5-22.jpg?fit=800%2C600&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-2ps","jetpack-related-posts":[{"id":26886,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-impacts-geants-pourraient-declencher-des-vibrations-sismiques-durant-des-millions-dannees\/","url_meta":{"origin":9266,"position":0},"title":"Des impacts g\u00e9ants pourraient d\u00e9clencher des vibrations sismiques durant des millions d&rsquo;ann\u00e9es","author":"Admin","date":"16 mai 2025","format":false,"excerpt":"Pour comprendre \u00e0 quel point les d\u00e9buts du syst\u00e8me solaire \u00e9taient chaotiques, il suffit de regarder la Lune. Sa surface cribl\u00e9e de crat\u00e8res porte les cicatrices d'une multitude de collisions. Le syst\u00e8me solaire primitif ressemblait \u00e0 un champ de d\u00e9bris o\u00f9 les objets s'\u00e9crasaient les uns contre les autres dans\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\/2024\/10\/impact-majeur-dune-meteorite.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/10\/impact-majeur-dune-meteorite.jpg?fit=1024%2C1024&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/10\/impact-majeur-dune-meteorite.jpg?fit=1024%2C1024&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2024\/10\/impact-majeur-dune-meteorite.jpg?fit=1024%2C1024&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":674,"url":"https:\/\/www.laterredufutur.com\/accueil\/kepler-22b-une-nouvelle-terre-decouverte-dans-une-zone-lhabitabler\/","url_meta":{"origin":9266,"position":1},"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":23937,"url":"https:\/\/www.laterredufutur.com\/accueil\/nous-venons-de-depasser-le-seuil-de-5000-exoplanetes-decouvertes\/","url_meta":{"origin":9266,"position":2},"title":"Nous venons de d\u00e9passer le seuil de 5000 exoplan\u00e8tes d\u00e9couvertes","author":"Admin","date":"7 avril 2022","format":false,"excerpt":"Le nombre d'exoplan\u00e8tes confirm\u00e9es vient de d\u00e9passer la barre des 5 000, ce qui repr\u00e9sente un voyage de d\u00e9couverte de 30 ans men\u00e9 par les t\u00e9lescopes spatiaux de la NASA, des t\u00e9lescopes terrestres et des t\u00e9lescopes spatiaux. La premi\u00e8re exoplan\u00e8te fut d\u00e9couverte le 6 octobre 1995 par Christophe Colomb avec\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\/exoplanetes-decouvertes.jpg?fit=1200%2C600&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/exoplanetes-decouvertes.jpg?fit=1200%2C600&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/exoplanetes-decouvertes.jpg?fit=1200%2C600&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/exoplanetes-decouvertes.jpg?fit=1200%2C600&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/04\/exoplanetes-decouvertes.jpg?fit=1200%2C600&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":11638,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-astronomes-decouvrent-une-planete-dans-un-systeme-detoiles-triple\/","url_meta":{"origin":9266,"position":3},"title":"Les astronomes d\u00e9couvrent une plan\u00e8te dans un syst\u00e8me d&rsquo;\u00e9toiles triple","author":"Admin","date":"2 avril 2016","format":false,"excerpt":"Alors que nous sommes ici sur Terre \u00e0 la recherche du\u00a0comment fonctionne notre propre Soleil, les astronomes viennent de trouver une plan\u00e8te stable dans un syst\u00e8me \u00e0 trois \u00e9toiles. La plan\u00e8te d\u00e9couverte r\u00e9cemment a \u00e9t\u00e9 baptis\u00e9e KELT-4AB, est la quatri\u00e8me plan\u00e8te jamais trouv\u00e9e qui poss\u00e8de\u00a0un syst\u00e8me d'\u00e9toiles triple. Mais qu'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\/2016\/04\/planete-aux-3etoiles.jpg?fit=725%2C375&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/04\/planete-aux-3etoiles.jpg?fit=725%2C375&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/04\/planete-aux-3etoiles.jpg?fit=725%2C375&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/04\/planete-aux-3etoiles.jpg?fit=725%2C375&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":14386,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-planete-avec-des-nuages-de-rubis-et-de-saphirs\/","url_meta":{"origin":9266,"position":4},"title":"Une plan\u00e8te avec des nuages de rubis et de saphirs","author":"Admin","date":"3 janvier 2017","format":false,"excerpt":"Pour la premi\u00e8re fois d\u00e9couverte en 2008, HAT-P-7b est une plan\u00e8te 16 fois plus grande et 500 fois plus massive que la Terre. Elle orbite autour d'une \u00e9toile deux fois plus grande et 50 % plus massive que notre Soleil. Situ\u00e9e \u00e0 plus de 1040 ann\u00e9es-lumi\u00e8re de notre syst\u00e8me solaire\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\/12\/hat-p-7b_exoplanete.jpg?fit=600%2C400&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/12\/hat-p-7b_exoplanete.jpg?fit=600%2C400&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/12\/hat-p-7b_exoplanete.jpg?fit=600%2C400&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":23999,"url":"https:\/\/www.laterredufutur.com\/accueil\/notre-systeme-solaire-possede-bien-la-planete-x\/","url_meta":{"origin":9266,"position":5},"title":"Notre syst\u00e8me solaire poss\u00e8de bien la Plan\u00e8te X","author":"Admin","date":"30 avril 2022","format":false,"excerpt":"Un nouveau sc\u00e9nario explique la position actuelle des quatre plan\u00e8tes g\u00e9antes de notre Syst\u00e8me solaire. Des quatre connues. Parce qu'il pourrait bien en exister une cinqui\u00e8me ! Celle que l'on nomme la plan\u00e8te X. Loin, tr\u00e8s loin au-del\u00e0 de l'orbite de Neptune. Notre Syst\u00e8me solaire. Les astronomes l'\u00e9tudient depuis bien\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\/2021\/09\/planete-x.jpg?fit=1024%2C576&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/09\/planete-x.jpg?fit=1024%2C576&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/09\/planete-x.jpg?fit=1024%2C576&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/09\/planete-x.jpg?fit=1024%2C576&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/9266","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=9266"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/9266\/revisions"}],"predecessor-version":[{"id":9268,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/9266\/revisions\/9268"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/9267"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=9266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=9266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=9266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}