{"id":11644,"date":"2016-04-02T18:52:24","date_gmt":"2016-04-02T16:52:24","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=11644"},"modified":"2016-04-02T18:52:24","modified_gmt":"2016-04-02T16:52:24","slug":"55-cancri-e-lexoplanete-de-lenfer","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/55-cancri-e-lexoplanete-de-lenfer\/","title":{"rendered":"55 Cancri-e : l&rsquo;exoplan\u00e8te de l&rsquo;enfer"},"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;\">Cet astre, deux fois plus grand que la Terre, se situe \u00e0 40 ann\u00e9es-lumi\u00e8re de notre plan\u00e8te, rapporte la Nasa, qui a l&rsquo;observ\u00e9 plus de 80 heures. A sa surface, des fleuves de lave et des mers magmatiques pour une temp\u00e9rature sup\u00e9rieure \u00e0 1000 degr\u00e9s.<\/p>\n<p style=\"text-align: justify;\">Des roches en fusion, des rivi\u00e8res de lave et une temp\u00e9rature comprise entre 2500 et 1100\u00b0C. Bienvenue sur 55 Cancri-e, une exoplan\u00e8te situ\u00e9e \u00e0 40 ann\u00e9es-lumi\u00e8re de la Terre, observ\u00e9e par la Nasa. Gr\u00e2ce \u00e0 son t\u00e9lescope spatial \u00e0 infrarouge Spitzer, l&rsquo;agence spatiale am\u00e9ricaine a pu enregistrer plus de 80h de donn\u00e9es, qui ont permis de dresser un premier portrait de l&rsquo;astre.<\/p>\n<p style=\"text-align: justify;\">Des \u00ab\u00a0mers\u00a0\u00bb de roche en fusion<br \/>\n\u00ab\u00a055 Cancri e\u00a0\u00bb, \u00e9galement surnomm\u00e9 \u00ab\u00a0Janssen\u00a0\u00bb, est \u00ab\u00a0presque deux fois plus grande\u00a0\u00bb que la Terre et huit fois plus dense. Tr\u00e8s proche de son \u00e9toile, environ la m\u00eame distance que celle s\u00e9parant la Lune et la Terre- elle effectue ses rotations en seulement 18h, contre 365 jours pour la Terre.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/bUKpxYisg4c?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/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;\">Plus impressionnant encore, l&rsquo;exoplan\u00e8te est, toujours selon la Nasa, constitu\u00e9e \u00e0 moiti\u00e9 de roche et de lave formant des rivi\u00e8res, voire des \u00ab\u00a0mers\u00a0\u00bb de roche en fusion. L&rsquo;important \u00e9cart de 1400\u00b0C \u00e0 sa surface s&rsquo;expliquerait d&rsquo;ailleurs par ces \u00ab\u00a0zones magmatiques\u00a0\u00bb, elles-m\u00eames li\u00e9es au fait que plan\u00e8te pr\u00e9sente toujours la m\u00eame face \u00e0 son soleil -comme la Lune avec la Terre.<\/p>\n<p><span class=\"embed-youtube\" style=\"text-align:center; display: block;\"><iframe loading=\"lazy\" class=\"youtube-player\" width=\"640\" height=\"360\" src=\"https:\/\/www.youtube.com\/embed\/ukod0kEUank?version=3&#038;rel=1&#038;showsearch=0&#038;showinfo=1&#038;iv_load_policy=1&#038;fs=1&#038;hl=fr-FR&#038;autohide=2&#038;wmode=transparent\" allowfullscreen=\"true\" style=\"border:0;\" sandbox=\"allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox\"><\/iframe><\/span><\/p>\n<p style=\"text-align: justify;\">\u00ab\u00a0Vous ne trouverez nulle part une plan\u00e8te semblable \u00e0 celle-ci\u00a0\u00bb, s&rsquo;est r\u00e9joui Stephen Kane, de l&rsquo;universit\u00e9 de San Francisco (Californie, Etats-Unis), coauteur de l&rsquo;\u00e9tude. La NASA esp\u00e8re en apprendre encore un peu plus sur 55 Cancri e lors de la prochaine observation, cette fois avec le t\u00e9lescope spatiale James Webb.<\/p>\n<p style=\"text-align: justify;\">source :\u00a0<a href=\"http:\/\/www.lexpress.fr\/actualite\/sciences\/55-cancri-e-attention-cette-exoplanete-ressemble-a-l-enfer-sur-terre_1778435.html\" target=\"_blank\">http:\/\/www.lexpress.fr\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"11644\">(386)<\/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>Cet astre, deux fois plus grand que la Terre, se situe \u00e0 40 ann\u00e9es-lumi\u00e8re de notre plan\u00e8te, rapporte la Nasa,&#8230;<\/p>\n","protected":false},"author":1,"featured_media":11645,"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":"55 Cancri-e : l'exoplan\u00e8te de l'enfer @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":[5698,312,359,4357,112,1705,684,49],"class_list":["post-11644","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-55-cancri-e","tag-enfer","tag-exoplanete","tag-fusion","tag-lave","tag-super-terre","tag-video","tag-volcans","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/04\/exoplanete-55-cancri.jpg?fit=2000%2C1125&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-31O","jetpack-related-posts":[{"id":17375,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-de-planetes-recouvertes-de-pierres-precieuses\/","url_meta":{"origin":11644,"position":0},"title":"D\u00e9couverte de plan\u00e8tes recouvertes de pierres pr\u00e9cieuses","author":"Admin","date":"8 janvier 2019","format":false,"excerpt":"Les pierres pr\u00e9cieuses sont peut-\u00eatre relativement rares et cach\u00e9es dans les profondeurs de la Terre, mais l\u2019espace est un v\u00e9ritable tr\u00e9sor.\u00a0Les astronomes ont trouv\u00e9 une nouvelle classe de plan\u00e8tes, et elles sont si abondantes dans les compos\u00e9s qui fabriquent des saphirs et des rubis, elles pourraient bien briller de mille\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\/2018\/12\/plan%C3%A8te-saphyr.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\/2018\/12\/plan%C3%A8te-saphyr.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/12\/plan%C3%A8te-saphyr.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/12\/plan%C3%A8te-saphyr.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":9266,"url":"https:\/\/www.laterredufutur.com\/accueil\/a-80-annees-lumiere-de-la-terre-une-planete-sans-etoile-revele-un-bulletin-meteo-chaotique\/","url_meta":{"origin":11644,"position":1},"title":"\u00c0 80 ann\u00e9es-lumi\u00e8re de la Terre, une plan\u00e8te sans \u00e9toile r\u00e9v\u00e8le un bulletin m\u00e9t\u00e9o chaotique","author":"Admin","date":"12 novembre 2015","format":false,"excerpt":"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. 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\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\/11\/comparaison_entre_jupiter_pso-j318-5-22.jpg?fit=800%2C600&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"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&resize=350%2C200 1x, 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&resize=525%2C300 1.5x, 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&resize=700%2C400 2x"},"classes":[]},{"id":24647,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-dune-nouvelle-exoplanete-habitable\/","url_meta":{"origin":11644,"position":2},"title":"D\u00e9couverte d&rsquo;une nouvelle exoplan\u00e8te habitable","author":"Admin","date":"12 janvier 2023","format":false,"excerpt":"TOI 700 e est \u00e0 peu pr\u00e8s de la m\u00eame taille que la Terre, et a \u00e9t\u00e9 d\u00e9couverte non loin d'une autre plan\u00e8te, aussi situ\u00e9e dans une zone habitable. TOI 700 e, une exoplan\u00e8te potentiellement \"habitable\" d\u00e9couverte. Des scientifiques travaillant pour la mission TESS (Transiting Exoplanet Survey Satellite) de l'agence\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\/2023\/01\/toi-700-exoplanete-habitable.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\/2023\/01\/toi-700-exoplanete-habitable.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/01\/toi-700-exoplanete-habitable.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/01\/toi-700-exoplanete-habitable.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/01\/toi-700-exoplanete-habitable.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":12608,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-telescope-kepler-decouvre-une-exoplanete-de-la-taille-de-jupiter-et-potentiellement-habitable\/","url_meta":{"origin":11644,"position":3},"title":"Le t\u00e9lescope Kepler d\u00e9couvre une exoplan\u00e8te de la taille de Jupiter et potentiellement habitable","author":"Admin","date":"24 juin 2016","format":false,"excerpt":"Kepler-1647b \u00e9volue en orbite autour de deux \u00e9toiles et \u00e0 une distance de ses astres qui la rend potentiellement habitable... Le t\u00e9lescope orbital am\u00e9ricain Kepler vient de d\u00e9couvrir une nouvelle plan\u00e8te. Baptis\u00e9e Kepler-1647b, cette exoplan\u00e8te pr\u00e9sente d\u2019abord la particularit\u00e9 d\u2019\u00eatre aussi grande que Jupiter, initialement la plus grosse plan\u00e8te 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\/2016\/06\/Kepler-1647b.jpg?fit=800%2C480&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/Kepler-1647b.jpg?fit=800%2C480&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/Kepler-1647b.jpg?fit=800%2C480&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/06\/Kepler-1647b.jpg?fit=800%2C480&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":10644,"url":"https:\/\/www.laterredufutur.com\/accueil\/planetes-habitables-les-decouvertes-de-kepler\/","url_meta":{"origin":11644,"position":4},"title":"Plan\u00e8tes habitables, les d\u00e9couvertes de Kepler","author":"Admin","date":"28 janvier 2016","format":false,"excerpt":"Sommes-nous seuls dans l'Univers ? \u00c0 partir des donn\u00e9es collect\u00e9es depuis 2009 par le t\u00e9lescope spatial Kepler, ce documentaire interroge la possibilit\u00e9 d'une vie extraterrestre dans notre galaxie. Notre galaxie, la Voie lact\u00e9e, comporte entre 200 et 300 milliards d'\u00e9toiles. Bon nombre d'entre elles ont dans leur orbite des plan\u00e8tes\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\/telescope-kepler.jpg?fit=800%2C600&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/telescope-kepler.jpg?fit=800%2C600&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/telescope-kepler.jpg?fit=800%2C600&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/telescope-kepler.jpg?fit=800%2C600&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":7325,"url":"https:\/\/www.laterredufutur.com\/accueil\/kepler-186f-la-planete-soeur-de-la-terre\/","url_meta":{"origin":11644,"position":5},"title":"Kepler 186f, la plan\u00e8te soeur de la Terre","author":"Admin","date":"13 juin 2015","format":false,"excerpt":"An avril 2014, l\u2019annonce par la NASA, tel un tsunami, a fait le tour du monde en quelques minutes, et son onde de choc a fait fr\u00e9mir la Galaxie enti\u00e8re\u2026, l\u2019\u00e9quipe internationale de Elisa Quintana, utilisant le satellite am\u00e9ricain Kepler, a d\u00e9couvert, dans la constellation du Cygne1, une \u00ab plan\u00e8te\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\/06\/Kepler-186f.jpg?fit=640%2C360&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/Kepler-186f.jpg?fit=640%2C360&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/06\/Kepler-186f.jpg?fit=640%2C360&ssl=1&resize=525%2C300 1.5x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/11644","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=11644"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/11644\/revisions"}],"predecessor-version":[{"id":11646,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/11644\/revisions\/11646"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/11645"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=11644"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=11644"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=11644"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}