{"id":6730,"date":"2015-06-04T00:00:29","date_gmt":"2015-06-03T22:00:29","guid":{"rendered":"http:\/\/www.laterredufutur.com\/accueil\/?p=6730"},"modified":"2015-05-20T16:59:56","modified_gmt":"2015-05-20T14:59:56","slug":"les-astronomes-determines-a-trouver-la-vie-extraterrestre","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/les-astronomes-determines-a-trouver-la-vie-extraterrestre\/","title":{"rendered":"Les astronomes d\u00e9termin\u00e9s \u00e0 trouver la vie extraterrestre"},"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;\">\u00ab Trouver des traces de vie au-del\u00e0 de la Terre n\u2019est pas une utopie \u00bb, pense Natalie Batalha, astronome au Ames Research Center de la Nasa. \u00ab C\u2019est quelque chose que nous pouvons accomplir, peut-\u00eatre pas de mon vivant, mais peut-\u00eatre du vivant de ma fille \u00bb, estime-t-elle dans Gizmodo.<\/p>\n<p style=\"text-align: justify;\">Bon nombre de scientifiques pr\u00e9sents le 9 mai \u00e0 l\u2019inauguration de l\u2019Institut Carl Sagan, du nom du c\u00e9l\u00e8bre astronome, partagent cet avis. L\u2019Institut a justement \u00e9t\u00e9 fond\u00e9 pour explorer le cosmos \u00e0 la recherche de vie extraterrestre.<\/p>\n<p style=\"text-align: justify;\">\u00ab Comment savoir si un monde en orbite autour d\u2019une autre \u00e9toile est habitable ? Pour la premi\u00e8re fois de l\u2019histoire, nous avons les outils pour r\u00e9pondre \u00e0 cette question \u00bb, s\u2019enthousiasme Lisa Kaltenegger, l\u2019astronome qui dirige l\u2019institut. Les progr\u00e8s de la science sont en effet consid\u00e9rables, alors qu\u2019il y a vingt ans, les astronomes n\u2019avaient pas encore identifi\u00e9 avec certitude de plan\u00e8tes en dehors de notre syst\u00e8me solaire. Au cours des six derni\u00e8res ann\u00e9es, le t\u00e9lescope spatial Kepler a d\u00e9j\u00e0 permis de confirmer l\u2019existence de plus de 1.000 de ces exoplan\u00e8tes.<\/p>\n<p style=\"text-align: justify;\">Un milliard de plan\u00e8tes semblables \u00e0 la Terre ?<\/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;\">Mais combien sont r\u00e9ellement habitables ? Beaucoup, explique Bill Borucki, chercheur principal de la mission Kepler : \u00ab Nous avons appris que la plupart des \u00e9toiles ont des plan\u00e8tes autour d\u2019elles, que les plan\u00e8tes de la taille de la Terre sont communes, et qu\u2019une bonne partie se trouve dans la zone habitable (o\u00f9 l\u2019eau liquide peut exister) de leur \u00e9toile. \u00bb<\/p>\n<p style=\"text-align: justify;\">Il calcule : \u00ab 100 milliards d\u2019\u00e9toiles, 10 % avec des plan\u00e8tes de la taille de la Terre, 10 % d\u2019\u00e9toiles comme le Soleil\u2026 \u00bb Soit un milliard de plan\u00e8tes de la taille de la Terre situ\u00e9es dans une zone habitable autour d\u2019\u00e9toiles comme le Soleil.<\/p>\n<p style=\"text-align: justify;\">Et apr\u00e8s ? Que se passera-t-il si une plan\u00e8te semblable \u00e0 la Terre est d\u00e9couverte ? \u00ab Si elle se trouve \u00e0 quelques ann\u00e9es-lumi\u00e8re d\u2019ici, je dis, commen\u00e7ons \u00e0 construire un vaisseau spatial \u00bb, lance Steve Squyres, le responsable de la mission Mars Exploration Rover. \u00ab L\u2019esp\u00e8ce humaine a mis 10.000 ans \u00e0 se r\u00e9pandre sur la Terre, mais cela m\u2019a pris huit heures d\u2019avion pour traverser l\u2019Atlantique \u00bb, r\u00e9sume Didier Queloz, astronome sp\u00e9cialis\u00e9 dans la recherche d\u2019exoplan\u00e8tes \u00e0 l\u2019Universit\u00e9 de Cambridge. \u00ab Peut-\u00eatre qu\u2019il nous faudra encore cent, ou mille ans, mais ce n\u2019est pas insens\u00e9 d\u2019imaginer que nous enverrons des explorateurs sur ces plan\u00e8tes proches. Il n\u2019y a pas d\u2019autre limite fondamentale que le temps. \u00bb<\/p>\n<p><a href=\"http:\/\/www.laterredufutur.com\/accueil\/\">TDF<\/a><\/p>\n<p>source :\u00a0http:\/\/www.20minutes.fr\/<\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"6730\">(342)<\/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>\u00ab Trouver des traces de vie au-del\u00e0 de la Terre n\u2019est pas une utopie \u00bb, pense Natalie Batalha, astronome au&#8230;<\/p>\n","protected":false},"author":1,"featured_media":6731,"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":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":[2257,117,359,4327,202,75,308],"class_list":["post-6730","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-conquete","tag-espace","tag-exoplanete","tag-extraterrrestre","tag-recherche","tag-terre","tag-vie","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/05\/exoplanete.jpg?fit=648%2C415&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-1Ky","jetpack-related-posts":[{"id":7762,"url":"https:\/\/www.laterredufutur.com\/accueil\/grace-a-stephen-hawking-on-va-se-remettre-a-rever\/","url_meta":{"origin":6730,"position":0},"title":"Gr\u00e2ce \u00e0 Stephen Hawking, on va se remettre \u00e0 r\u00eaver","author":"Admin","date":"24 ao\u00fbt 2015","format":false,"excerpt":"Recherche de vie extraterrestre: \"Gr\u00e2ce \u00e0 Stephen Hawking, on va se remettre \u00e0 r\u00eaver\". L'homme d'affaires russe Yuri Milner a mis 100 millions de dollars sur la table pour donner tous les moyens au c\u00e9l\u00e8bre astrophysicien Stephen Hawking de r\u00e9pondre \u00e0 la question existentielle: \"sommes-nous seuls dans l'univers?\" \"Dans un\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\/stephen-hawking.jpg?fit=900%2C506&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/stephen-hawking.jpg?fit=900%2C506&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/stephen-hawking.jpg?fit=900%2C506&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/07\/stephen-hawking.jpg?fit=900%2C506&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":18841,"url":"https:\/\/www.laterredufutur.com\/accueil\/les-astronomes-confirment-enfin-la-presence-de-methane-sur-mars\/","url_meta":{"origin":6730,"position":1},"title":"Les astronomes confirment enfin la pr\u00e9sence de m\u00e9thane sur Mars","author":"Admin","date":"3 avril 2019","format":false,"excerpt":"Les chercheurs ont confirm\u00e9 pour la premi\u00e8re fois la d\u00e9tection de m\u00e9thane sur Mars. Depuis quinze ans, divers groupes de recherche pr\u00e9tendaient observer des traces de m\u00e9thane dans l'atmosph\u00e8re de Mars. Curieusement, elles apparaissent souvent comme des nuages de gaz qui apparaissent et disparaissent sur de courtes \u00e9chelles de temps.\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\/04\/cratere-gale-zone-atterrissage-nasa-esa-mars.jpg?fit=1024%2C640&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/04\/cratere-gale-zone-atterrissage-nasa-esa-mars.jpg?fit=1024%2C640&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/04\/cratere-gale-zone-atterrissage-nasa-esa-mars.jpg?fit=1024%2C640&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/04\/cratere-gale-zone-atterrissage-nasa-esa-mars.jpg?fit=1024%2C640&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":490,"url":"https:\/\/www.laterredufutur.com\/accueil\/un-monde-extraterrestre\/","url_meta":{"origin":6730,"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":26968,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-vague-extraterrestre-geante-a-frappe-la-terre-il-y-a-14-millions-dannees-et-pourrait-avoir-radicalement-modifie-le-climat-de-notre-planete\/","url_meta":{"origin":6730,"position":3},"title":"Une \u00ab vague \u00bb extraterrestre g\u00e9ante a frapp\u00e9 la Terre il y a 14 millions d&rsquo;ann\u00e9es et pourrait avoir radicalement modifi\u00e9 le climat de notre plan\u00e8te","author":"Admin","date":"11 juin 2025","format":false,"excerpt":"Le voyage de notre syst\u00e8me solaire autour du centre de la Voie lact\u00e9e le fait traverser diff\u00e9rents environnements galactiques, et l'un d'eux pourrait avoir eu un impact durable sur le climat de la Terre, selon une nouvelle \u00e9tude. Comme un navire naviguant \u00e0 travers des conditions m\u00e9t\u00e9orologiques changeantes en mer,\u2026","rel":"","context":"Dans &quot;Climat&quot;","block_context":{"text":"Climat","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/climat\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/10\/galaxie-voie-lactee.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\/10\/galaxie-voie-lactee.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/10\/galaxie-voie-lactee.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/10\/galaxie-voie-lactee.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":18741,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-millions-de-planetes-potentiellement-habitables-se-cacheraient-dans-notre-galaxie\/","url_meta":{"origin":6730,"position":4},"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":23380,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-telescope-james-webb-pourrait-detecter-des-lumieres-artificielles-sur-proxima-b\/","url_meta":{"origin":6730,"position":5},"title":"Le t\u00e9lescope James Webb pourrait d\u00e9tecter des lumi\u00e8res artificielles sur Proxima b","author":"Admin","date":"11 novembre 2021","format":false,"excerpt":"Que faudrait-il pour voir des lumi\u00e8res artificielles \u00e0 Proxima Centauri B ? Y a-t-il une civilisation extraterrestre \u00e0 c\u00f4t\u00e9 de chez vous ? C'est... possible. Fin 2020, nous avons d\u00e9couvert un signal provenant de la direction de Proxima Centauri (pas n\u00e9cessairement de Proxima Centauri), notre \u00e9toile voisine la plus proche.\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\/11\/exoplanete-habitee.jpg?fit=1024%2C614&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/11\/exoplanete-habitee.jpg?fit=1024%2C614&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/11\/exoplanete-habitee.jpg?fit=1024%2C614&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/11\/exoplanete-habitee.jpg?fit=1024%2C614&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/6730","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=6730"}],"version-history":[{"count":3,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/6730\/revisions"}],"predecessor-version":[{"id":6753,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/6730\/revisions\/6753"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/6731"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=6730"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=6730"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=6730"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}