{"id":831,"date":"2012-03-29T23:00:00","date_gmt":"2012-03-29T22:00:00","guid":{"rendered":"http:\/\/www.laterredufutur.com\/wordpress\/?p=831"},"modified":"2012-03-29T23:00:00","modified_gmt":"2012-03-29T22:00:00","slug":"le-monde-de-drake-refait-surface-avec-la-decouverte-de-super-terres","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/le-monde-de-drake-refait-surface-avec-la-decouverte-de-super-terres\/","title":{"rendered":"Le monde de Drake refait surface avec la d\u00e9couverte de super-Terres"},"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;\"><span style=\"color: #000000;\"><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"827\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/le-monde-de-drake-refait-surface-avec-la-decouverte-de-super-terres\/drake\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/drake.jpg?fit=275%2C183&amp;ssl=1\" data-orig-size=\"275,183\" 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=\"drake\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/drake.jpg?fit=275%2C183&amp;ssl=1\" class=\" alignleft size-full wp-image-827\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/wordpress\/wp-content\/uploads\/2012\/03\/drake.jpg?w=120\" border=\"0\" alt=\"drake\" title=\"drake\"  style=\"float: left;\" \/>Des \u00ab\u00a0<strong>super-Terres<\/strong>\u00ab\u00a0. Ces plan\u00e8tes rocheuses d&rsquo;une masse comprises entre une et dix fois la Terre ont \u00e9t\u00e9 d\u00e9couvertes par une \u00e9quipe internationale de l&rsquo;instrument HARPS. Cet appareil, un spectographe, \u00e9quipant le t\u00e9lescope de l&rsquo;ESO au Chili, a mis au jour ces 9 plan\u00e8tes dans un \u00e9chantillon de 102 \u00e9toiles de type \u00ab\u00a0naines rouges\u00a0\u00bb.<\/span><\/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;\"><span style=\"color: #000000;\"> <\/span><\/span><\/span><\/p>\n<p>\u00a0<\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><strong>D\u00e9couverte de super-Terres en 2012<\/strong><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">Si ces \u00ab\u00a0super-Terres\u00a0\u00bb sont situ\u00e9es dans une zone o\u00f9 la temp\u00e9rature est propice \u00e0 l&rsquo;existence d&rsquo;eau liquide, elles pourraient th\u00e9oriquement \u00eatre \u00e0 m\u00eame d&rsquo;abriter une forme de vie quelconque. Les \u00ab\u00a0naines rouges\u00a0\u00bb quant \u00e0 elles, sont des \u00e9toiles relativement faibles et froides compar\u00e9es \u00e0 notre Soleil, et sont tr\u00e8s communes dans notre galaxie. Elles repr\u00e9sentent 80% de toutes les \u00e9toiles de la Voie Lact\u00e9e. Xavier Bonfils, de l&rsquo;Observatoire des sciences de l&rsquo;Univers de Grenoble, responsable de l&rsquo;\u00e9quipe explique que les \u00ab\u00a0nouvelles observations avec HARPS signifient qu&rsquo;environ 40% de toutes les naines rouges ont une super-Terre dans leur zone habitable, l\u00e0 o\u00f9 l&rsquo;eau liquide peut exister \u00e0 la surface de la plan\u00e8te\u00a0\u00bb. \u00ab\u00a0Le fait que les naines rouges soient si communes &#8211; on en compte environ 160 milliards dans la Voie Lact\u00e9e &#8211; nous a conduit \u00e0 l&rsquo;\u00e9tonnant r\u00e9sultat qu&rsquo;il y a des dizaines de milliards de plan\u00e8te de ce type rien que dans notre galaxie\u00a0\u00bb, ajoute-t-il dans un communiqu\u00e9 de l&rsquo;ESO.<\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><span style=\"color: #000000;\">Ce nouveau r\u00e9sultat obtenu par l&rsquo;instrument \u00ab chasseur de plan\u00e8tes \u00bb HARPS de l&rsquo;ESO montre que les plan\u00e8tes un peu plus grosses que la Terre sont tr\u00e8s communes dans la zone habitable autour d&rsquo;\u00e9toiles rouges de faible luminosit\u00e9. L&rsquo;\u00e9quipe internationale qui a conduit cette recherche estime qu&rsquo;il y a des dizaines de milliards de plan\u00e8tes de ce type, rien que dans Voie Lact\u00e9e et probablement une centaine dans le voisinage imm\u00e9diat du Soleil. Il s&rsquo;agit l\u00e0 de la premi\u00e8re mesure directe de la fr\u00e9quence des super-Terres autour des naines rouges, qui repr\u00e9sentent 80% des \u00e9toiles de la Voie Lact\u00e9e.<\/span><br \/><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"828\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/le-monde-de-drake-refait-surface-avec-la-decouverte-de-super-terres\/andromeda\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/andromeda.jpg?fit=432%2C288&amp;ssl=1\" data-orig-size=\"432,288\" 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;1&quot;}\" data-image-title=\"andromeda\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/andromeda.jpg?fit=432%2C288&amp;ssl=1\" class=\" size-full wp-image-828\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/wordpress\/wp-content\/uploads\/2012\/03\/andromeda.jpg?w=450\" border=\"0\" alt=\"andromede\"  srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/andromeda.jpg?w=432&amp;ssl=1 432w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/andromeda.jpg?resize=300%2C200&amp;ssl=1 300w\" sizes=\"(max-width: 432px) 100vw, 432px\" \/><br \/><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><strong><span style=\"color: #000000;\">L&rsquo;\u00e9quation \u00a0de Drake<\/span><\/strong><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">L&rsquo;\u00e9quation de Drake a d\u00e9j\u00e0 r\u00e9pondu \u00e0 tout \u00e7a.\u00a0Cette \u00e9quation a \u00e9t\u00e9 sugg\u00e9r\u00e9e par Frank Drake en 1961 afin de tenter d&rsquo;estimer le nombre potentiel de civilisations extraterrestres dans notre galaxie avec qui nous pourrions entrer en contact. Le principal objet de cette \u00e9quation pour les scientifiques est de d\u00e9terminer ses facteurs, afin de conna\u00eetre le nombre probable de ces civilisations. M\u00eame si Drake a \u00e9t\u00e9 contest\u00e9 dans ses calculs, il semble raisonnable de dire qu&rsquo;aujourd&rsquo;hui que certains scientifiques arrivent aux m\u00eames r\u00e9sultats.<\/span><\/span><\/span><\/p>\n<p> <script async src=\"\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js\"><\/script> <!-- TDF2 --> <ins class=\"adsbygoogle\"      style=\"display:inline-block;width:336px;height:280px\"      data-ad-client=\"ca-pub-2860849627502538\"      data-ad-slot=\"1340140919\"><\/ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); <\/script> <\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">Au del\u00e0 de civilisations extra terrestres, la vie a tr\u00e8s bien pu se d\u00e9velopper sur des milliards de plan\u00e8tes. La th\u00e9orie de civilisations d\u00e9pend du facteur de d\u00e9veloppement de ces civilisations sans s&rsquo;auto d\u00e9truire et des civilisations ont tr\u00e8s bien pu exister il y a des millions d&rsquo;ann\u00e9es. Aujourd&rsquo;hui, m\u00eame si elles n&rsquo;existent plus, Carl sagan sp\u00e9cula que les valeurs de tous les facteurs, hormis celle de la dur\u00e9e de vie d&rsquo;une civilisation, doivent \u00eatre relativement \u00e9lev\u00e9es, et le facteur d\u00e9terminant est de savoir si une civilisation poss\u00e8de ou non la capacit\u00e9 technologique d&rsquo;\u00e9viter une auto-destruction. Finalement, l&rsquo;int\u00e9r\u00eat de connaitre une plan\u00e8te o\u00f9 la vie se soit d\u00e9velopp\u00e9e et \u00e9galement de savoir si il y a toujours une civilisation actuelle et toujours active.<\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"> Stephen Hawking nous rappelle tout de m\u00eame qu&rsquo;il faudrait \u00e9viter de rentrer en contact avec de telles civilisations, car nous pourrions tr\u00e8s bien connaitre le sors des am\u00e9rindiens lors de la d\u00e9couverte des am\u00e9riques si de telles civilisations \u00e9taient beaucoup plus avanc\u00e9es que nous.<\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">Cette multiplication de super-Terres laisse songeur sur les innombrables possibilit\u00e9s de formes et la diversit\u00e9 de vie qu&rsquo;il puisse exister.<\/span><\/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;\"><span style=\"color: #000000;\"><img data-recalc-dims=\"1\" decoding=\"async\" data-attachment-id=\"829\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/le-monde-de-drake-refait-surface-avec-la-decouverte-de-super-terres\/super-terres\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/super-terres.jpg?fit=349%2C278&amp;ssl=1\" data-orig-size=\"349,278\" 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=\"super-terres\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/super-terres.jpg?fit=349%2C278&amp;ssl=1\" class=\" size-full wp-image-829\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/wordpress\/wp-content\/uploads\/2012\/03\/super-terres.jpg?w=450\" border=\"0\" alt=\"super-terres\" title=\"super-terres\"  srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/super-terres.jpg?w=349&amp;ssl=1 349w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/super-terres.jpg?resize=300%2C239&amp;ssl=1 300w\" sizes=\"(max-width: 349px) 100vw, 349px\" \/><br \/><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><strong>Notre plan\u00e8te sous pression<\/strong><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">La pr\u00e9sence d&rsquo;une vie extraterrestre \u00ab\u00a0intelligente\u00a0\u00bb ne d\u00e9prendra donc que de son pouvoir d&rsquo;adaptation \u00e0 son environnement. Ne nous sommes pas nous m\u00eame \u00e0 nous poser certaines questions ? <\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">Notre plan\u00e8te est \u00ab\u00a0sous pression\u00a0\u00bb et risque de ne plus pouvoir assurer le bien-\u00eatre de la civilisation si rien n&rsquo;est fait pour y rem\u00e9dier, ont averti des scientifiques de renom \u00e0 l&rsquo;issue d&rsquo;une conf\u00e9rence \u00e0 Londres pour pr\u00e9parer le sommet de Rio+20 en juin 2012.<\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">Rar\u00e9faction de l&rsquo;eau, pollution, extinction massive d&rsquo;esp\u00e8ces vivantes, crise alimentaire&#8230; Dans leur d\u00e9claration intitul\u00e9e \u00ab\u00a0L&rsquo;\u00e9tat de la plan\u00e8te\u00a0\u00bb et publi\u00e9e \u00e0 l&rsquo;issue de quatre jours de discussions, ces experts soulignent que la Terre et ses habitants sont d\u00e9sormais confront\u00e9s \u00e0 des d\u00e9fis sans pr\u00e9c\u00e9dent.<\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">\u00ab\u00a0La poursuite du fonctionnement de la Terre, en tant que syst\u00e8me qui a contribu\u00e9 au bien-\u00eatre de la civilisation humaine au cours des derniers si\u00e8cles, est en jeu\u00a0\u00bb, r\u00e9sume la d\u00e9claration sign\u00e9e par les participants de la conf\u00e9rence \u00ab\u00a0Plan\u00e8te sous pression\u00a0\u00bb.<\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">\u00ab\u00a0Ces menaces risquent d&rsquo;intensifier les crises \u00e9conomiques, \u00e9cologiques et sociales et peuvent cr\u00e9er une situation d&rsquo;urgence humanitaire \u00e0 l&rsquo;\u00e9chelle de la plan\u00e8te tout enti\u00e8re\u00a0\u00bb, assurent-ils.<\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><strong>Francis Drake<\/strong><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><span style=\"color: #000000;\">Francis Drake, convaincu de l&rsquo;existence d&rsquo;une forme de vie extraterrestre depuis son enfance dans les ann\u00e9es 30 \u00e0 Chicago, ne pouvait pas s&rsquo;imaginer que le genre humain soit la seule civilisation peuplant l&rsquo;Univers. En 1992, il publia\u00a0un livre \u00ab\u00a0Is Anyone Out There ?\u00a0\u00bb<\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">Apr\u00e8s l&rsquo;exp\u00e9rience d&rsquo;Ozma, Drake a organis\u00e9 une assembl\u00e9e avec un groupe de scientifiques de haut niveau pour d\u00e9battre des perspectives et des pi\u00e8ges de la recherche d&rsquo;une forme de vie extraterrestre intelligente (actuellement abr\u00e9g\u00e9 en SETI).<\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"830\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/le-monde-de-drake-refait-surface-avec-la-decouverte-de-super-terres\/drake-equation\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/drake-equation.jpg?fit=250%2C250&amp;ssl=1\" data-orig-size=\"250,250\" 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=\"drake-equation\" data-image-description=\"\" data-image-caption=\"\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/drake-equation.jpg?fit=250%2C250&amp;ssl=1\" class=\" alignleft size-full wp-image-830\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/wordpress\/wp-content\/uploads\/2012\/03\/drake-equation.jpg?resize=250%2C250\" border=\"0\" alt=\"drake equation\" title=\"drake equation\" align=\"left\" width=\"250\" height=\"250\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/drake-equation.jpg?w=250&amp;ssl=1 250w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/drake-equation.jpg?resize=150%2C150&amp;ssl=1 150w\" sizes=\"auto, (max-width: 250px) 100vw, 250px\" \/>En novembre 1961, dix radiotechniciens, astronomes et biologistes se r\u00e9unirent durant deux jours \u00e0 Green Bank. Le jeune Carl Sagan \u00e9tait l\u00e0, tout comme le chimiste de Berkeley Melvin Calvin (qui apprit durant ce meeting qu&rsquo;il avait re\u00e7u le prix Nobel de chimie). C&rsquo;est en pr\u00e9parant cette r\u00e9union que Francis Drake mit au point son \u00e9quation :<\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">N = R x fp x ne x fl x fi x fc x L<\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><strong>Conclusion<\/strong><\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">Connaitre le nombre de plan\u00e8tes rocheuses dispos\u00e9es dans les zones habitables, c&rsquo;est arriver \u00e0 supposer le nombre de civilisations ayant existaient ou encore de civilisations en cours d&rsquo;existence. Il y aurait donc 100 millions de mondes potentiellement habitables, et ceci, seulement dans notre galaxie.\u00a0M\u00eame si de nombreuses civilisations avaient surgi dans la Voie Lact\u00e9e, elles resteraient d\u00e9sesp\u00e9r\u00e9ment isol\u00e9es, faute de pouvoir communiquer entre elles. Elles seraient \u00e9galement isol\u00e9es selon la p\u00e9riode de leur propre existence.<\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">La Terre du Futur<\/span><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\">sources : Wikipedia \/\u00a0<a href=\"http:\/\/lci.tf1.fr\/\">http:\/\/lci.tf1.fr\/<\/a> <a href=\"http:\/\/www.liberation.fr\/\">http:\/\/www.liberation.fr<\/a><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><a href=\"http:\/\/exobio.chez-alice.fr\/\">http:\/\/exobio.chez-alice.fr\/<\/a> \/\u00a0<a href=\"http:\/\/seulsdanslecosmos.hautetfort.com\/\">http:\/\/seulsdanslecosmos.hautetfort.com\/<\/a><\/span><\/span><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"color: #000000;\"><span style=\"font-size: small;\"><span style=\"color: #000000;\"><a href=\"http:\/\/www.notre-planete.info\/\">http:\/\/www.notre-planete.info<\/a><br \/><\/span><\/span><\/span><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"831\">(398)<\/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;\"><span style=\"color: #000000;\"><img decoding=\"async\" class=\" alignleft size-full wp-image-827\" src=\"http:\/\/www.laterredufutur.com\/wordpress\/wp-content\/uploads\/2012\/03\/drake.jpg\" border=\"0\" alt=\"drake\" title=\"drake\" width=\"120\" style=\"float: left;\" \/>Des \u00ab\u00a0<strong>super-Terres<\/strong>\u00ab\u00a0. Ces plan\u00e8tes rocheuses d&rsquo;une masse comprises entre une et dix fois la Terre ont \u00e9t\u00e9 d\u00e9couvertes par une \u00e9quipe internationale de l&rsquo;instrument HARPS. Cet appareil, un spectographe, \u00e9quipant le t\u00e9lescope de l&rsquo;ESO au Chili, a mis au jour ces 9 plan\u00e8tes dans un \u00e9chantillon de 102 \u00e9toiles de type \u00ab\u00a0naines rouges\u00a0\u00bb.<\/span><\/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;\"><span style=\"color: #000000;\"> <\/span><\/span><\/span><\/p>\n","protected":false},"author":1,"featured_media":827,"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":[18],"tags":[1142,1144,128,130,121,1143,878,1145,313],"class_list":["post-831","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-monde-futur","tag-drake","tag-etoiles","tag-futur","tag-monde","tag-planete","tag-super-terres","tag-telescope","tag-voie-lactee","tag-zone","wpcat-18-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2012\/03\/drake.jpg?fit=275%2C183&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-dp","jetpack-related-posts":[{"id":1452,"url":"https:\/\/www.laterredufutur.com\/accueil\/trois-exoplanetes-potentiellement-habitables\/","url_meta":{"origin":831,"position":0},"title":"Trois exoplan\u00e8tes potentiellement habitables","author":"Admin","date":"27 juin 2013","format":false,"excerpt":"Des astronomes de l'Observatoire europ\u00e9en austral (ESO) ont d\u00e9couvert dans la constellation du Scorpion un syst\u00e8me solaire \"dot\u00e9 d'une zone habitable bien remplie\", avec trois \"super-Terres\" o\u00f9 les conditions seraient compatibles avec l'existence d'eau liquide. C'est autour de l'\u00e9toile Gliese 667C, d'une masse \u00e9quivalente \u00e0 un tiers de celle 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\/2011\/05\/gliese581.jpg?fit=300%2C216&ssl=1&resize=350%2C200","width":350,"height":200},"classes":[]},{"id":15092,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-nouvelle-exoplanete-pourrait-etre-la-meilleure-candidate-pour-la-recherche-de-traces-de-vie\/","url_meta":{"origin":831,"position":1},"title":"Une nouvelle exoplan\u00e8te pourrait \u00eatre la meilleure candidate pour la recherche de traces de vie","author":"Admin","date":"23 avril 2017","format":false,"excerpt":"Une exoplan\u00e8te en orbite autour d'une \u00e9toile de type naine rouge situ\u00e9e \u00e0 40 ann\u00e9es lumi\u00e8re de la Terre pourrait bien remporter \u00e0 son tour le titre de \"meilleure candidate pour la recherche de traces de vie au-del\u00e0 du Syst\u00e8me Solaire\". Une \u00e9quipe internationale d'astronomes compos\u00e9e de scientifiques de l'Institut\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\/04\/exoplanete.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\/2017\/04\/exoplanete.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/04\/exoplanete.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/04\/exoplanete.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2017\/04\/exoplanete.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":17178,"url":"https:\/\/www.laterredufutur.com\/accueil\/decouverte-dune-nouvelle-super-terre-tres-proche\/","url_meta":{"origin":831,"position":2},"title":"D\u00e9couverte d&rsquo;une nouvelle \u00ab\u00a0super-terre\u00a0\u00bb tr\u00e8s proche","author":"Admin","date":"21 novembre 2018","format":false,"excerpt":"Il s'agirait d'un monde \"froid et obscur\", inhospitalier pour la vie telle que nous la connaissons. Une \"super-terre\" a \u00e9t\u00e9 d\u00e9couverte en orbite autour d'une \u00e9toile \"voisine\" du syst\u00e8me solaire : un monde \"froid et obscur\", inhospitalier pour la vie telle que nous la connaissons, selon une \u00e9tude publi\u00e9e mercredi\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\/11\/%C3%A9toile-de-Barnard-planete.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\/2018\/11\/%C3%A9toile-de-Barnard-planete.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/11\/%C3%A9toile-de-Barnard-planete.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/11\/%C3%A9toile-de-Barnard-planete.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/11\/%C3%A9toile-de-Barnard-planete.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":24400,"url":"https:\/\/www.laterredufutur.com\/accueil\/deux-super-terres-rocheuses-decouvertes-autour-dune-etoile-proche-et-lune-pourrait-etre-habitable\/","url_meta":{"origin":831,"position":3},"title":"Deux super-terres rocheuses d\u00e9couvertes autour d&rsquo;une \u00e9toile proche, et l&rsquo;une pourrait \u00eatre habitable","author":"Admin","date":"10 septembre 2022","format":false,"excerpt":"Une \u00e9toile naine rouge situ\u00e9e \u00e0 seulement 105 ann\u00e9es-lumi\u00e8re pourrait abriter au moins un monde habitable. En orbite proche de l'\u00e9toile froide et peu lumineuse, les scientifiques ont d\u00e9couvert et confirm\u00e9 la pr\u00e9sence de deux exoplan\u00e8tes rocheuses, dont l'une se trouve confortablement install\u00e9e \u00e0 une distance de l'\u00e9toile connue sous\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\/exoplanetes.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\/exoplanetes.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/exoplanetes.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/09\/exoplanetes.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":23748,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-autre-planete-decouverte-en-orbite-autour-de-proxima-du-centaure\/","url_meta":{"origin":831,"position":4},"title":"Une autre plan\u00e8te d\u00e9couverte en orbite autour de Proxima du Centaure","author":"Admin","date":"14 f\u00e9vrier 2022","format":false,"excerpt":"Une troisi\u00e8me exoplan\u00e8te a \u00e9t\u00e9 d\u00e9couverte autour de l'\u00e9toile la plus proche du Soleil, la naine rouge Proxima Centauri. Le syst\u00e8me triple d'Alpha du Centaure fait r\u00eaver les exobiologistes et, en particulier, les auteurs de science-fiction depuis longtemps. Non seulement parce qu'il s'agit des \u00e9toiles les plus proches du Soleil\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\/02\/Proxima-Centauri.jpg?fit=1024%2C665&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/02\/Proxima-Centauri.jpg?fit=1024%2C665&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/02\/Proxima-Centauri.jpg?fit=1024%2C665&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/02\/Proxima-Centauri.jpg?fit=1024%2C665&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":25354,"url":"https:\/\/www.laterredufutur.com\/accueil\/y-a-t-il-de-la-vie-sur-la-superterre-k2-18-b-de-leau-decouverte-dans-son-atmosphere\/","url_meta":{"origin":831,"position":5},"title":"Y a-t-il de la vie sur la superterre K2-18 b ? De l&rsquo;eau d\u00e9couverte dans son atmosph\u00e8re !","author":"Admin","date":"10 novembre 2023","format":false,"excerpt":"De la vapeur d'eau a \u00e9t\u00e9 d\u00e9couverte dans l'atmosph\u00e8re d'une exoplan\u00e8te super-Terre, K2-18 b, qui orbite dans la zone habitable de son \u00e9toile. La temp\u00e9rature de la plan\u00e8te est similaire \u00e0 celle de la Terre, ce qui en fait un candidat prometteur pour des \u00e9tudes plus approfondies. K2-18 b a\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\/11\/K2-18-b-exoplanete.jpg?fit=1200%2C466&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/11\/K2-18-b-exoplanete.jpg?fit=1200%2C466&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/11\/K2-18-b-exoplanete.jpg?fit=1200%2C466&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/11\/K2-18-b-exoplanete.jpg?fit=1200%2C466&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/11\/K2-18-b-exoplanete.jpg?fit=1200%2C466&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/831","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=831"}],"version-history":[{"count":0,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/831\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/827"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=831"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=831"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=831"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}