{"id":20664,"date":"2020-05-07T17:00:25","date_gmt":"2020-05-07T15:00:25","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=20664"},"modified":"2020-04-23T16:29:24","modified_gmt":"2020-04-23T14:29:24","slug":"un-fragment-de-planete-qui-a-frappe-la-terre-pourrait-etre-enterre-a-linterieur-de-la-lune","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/un-fragment-de-planete-qui-a-frappe-la-terre-pourrait-etre-enterre-a-linterieur-de-la-lune\/","title":{"rendered":"Un fragment de plan\u00e8te qui a frapp\u00e9 la Terre pourrait \u00eatre enterr\u00e9 \u00e0 l&rsquo;int\u00e9rieur de la Lune"},"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>Un objet de la taille de Mars a-t-il percut\u00e9 la Terre il y a des milliards d&rsquo;ann\u00e9es? D&rsquo;o\u00f9 vient la Lune et comment s&rsquo;est-elle form\u00e9e? C&rsquo;est une question que les scientifiques se grattent la t\u00eate depuis des d\u00e9cennies.<\/p>\n<p>Selon \u00abl&rsquo;hypoth\u00e8se de l&rsquo;impact g\u00e9ant \u00bb, largement accept\u00e9e, la Lune s&rsquo;est form\u00e9e il y a des milliards d&rsquo;ann\u00e9es lorsqu&rsquo;une plan\u00e8te de la taille de Mars appel\u00e9e Theia est entr\u00e9e en collision avec la Terre.<\/p>\n<p>En Mars 2020, des chercheurs de l&rsquo;Universit\u00e9 du Nouveau-Mexique disent dans un nouvel article publi\u00e9 dans Nature Geoscience qu&rsquo;ils croient avoir trouv\u00e9 les restes de Theia enfouis sous la surface lunaire.<\/p>\n<p>Le gros inconv\u00e9nient de l&rsquo;hypoth\u00e8se de l&rsquo;impact &#8211; comme discut\u00e9 longuement par de nombreux scientifiques au cours de nombreuses ann\u00e9es &#8211; est le fait que m\u00eame si les isotopes d&rsquo;oxyg\u00e8ne dans les roches lunaires collect\u00e9es pendant les missions Apollo de la NASA ressemblent \u00e9troitement \u00e0 ceux trouv\u00e9s sur Terre, ils sont remarquablement diff\u00e9rents de ceux trouv\u00e9s sur d&rsquo;autres objets de notre syst\u00e8me solaire.<\/p>\n<p>Alors, comment la Lune pourrait-elle \u00eatre constitu\u00e9e en grande partie des restes de Theia, comme de nombreux mod\u00e8les l&rsquo;ont pr\u00e9dit ?<\/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>Dans leur recherche, les scientifiques du Nouveau-Mexique ont examin\u00e9 les isotopes d&rsquo;oxyg\u00e8ne dans une gamme de diff\u00e9rents types de roches lunaires, \u00e0 plusieurs altitudes distinctes. Ils ont d\u00e9couvert que plus l&rsquo;origine de la roche \u00e9tait profonde, plus les isotopes d&rsquo;oxyg\u00e8ne \u00e9taient lourds, par rapport \u00e0 ceux trouv\u00e9s sur Terre.<\/p>\n<p>\u00ab\u00a0De toute \u00e9vidence, la composition distincte des isotopes d&rsquo;oxyg\u00e8ne de Theia n&rsquo;a pas compl\u00e8tement \u00e9t\u00e9 perdue par homog\u00e9n\u00e9isation lors de l&rsquo;impact g\u00e9ant\u00a0\u00bb, ont \u00e9crit les chercheurs dans leur article.<\/p>\n<p>Cela signifie que les isotopes d&rsquo;oxyg\u00e8ne ne se sont pas compl\u00e8tement m\u00e9lang\u00e9s lors de l&rsquo;impact de Theia-Terre, ce qui a conduit \u00e0 leur conclusion que Theia pourrait toujours provenir de l&rsquo;ext\u00e9rieur du syst\u00e8me solaire avant d&rsquo;avoir eu un impact avec la Terre.<\/p>\n<p>\u00ab\u00a0Ces donn\u00e9es sugg\u00e8rent que le manteau lunaire profond s&rsquo;est peut-\u00eatre moins m\u00e9lang\u00e9 et est le plus repr\u00e9sentatif du plan\u00e9to\u00efde Theia\u00a0\u00bb, a d\u00e9clar\u00e9 le chercheur et co-auteur Zach Sharp dans un communiqu\u00e9.<\/p>\n<p>Adaptation <a href=\"https:\/\/www.laterredufutur.com\/accueil\" target=\"_blank\" rel=\"noopener noreferrer\">Terra Projects<\/a><\/p>\n<p>Source : <a href=\"https:\/\/futurism.com\/fragment-planet-hit-earth-buried-moon\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/futurism.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"20664\">(528)<\/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>Un objet de la taille de Mars a-t-il percut\u00e9 la Terre il y a des milliards d&rsquo;ann\u00e9es? D&rsquo;o\u00f9 vient la&#8230;<\/p>\n","protected":false},"author":1,"featured_media":20665,"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":"Un fragment de #plan\u00e8te qui a frapp\u00e9 la #Terre pourrait \u00eatre enterr\u00e9 \u00e0 l'int\u00e9rieur de la #Lune @laterredufutur.com Terra Projects","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":[2312,3616,122,251,75,4923],"class_list":["post-20664","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","tag-collision","tag-formation","tag-lune","tag-origine","tag-terre","tag-theia","wpcat-22-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2020\/03\/theia-impact-terre-formation-lune.jpg?fit=1000%2C526&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-5ni","jetpack-related-posts":[{"id":8925,"url":"https:\/\/www.laterredufutur.com\/accueil\/des-scientifiques-auraient-retrouve-des-traces-de-theia-dans-le-manteau-de-notre-planete\/","url_meta":{"origin":20664,"position":0},"title":"Des scientifiques auraient retrouv\u00e9 des traces de Theia dans le manteau de notre plan\u00e8te","author":"Admin","date":"22 octobre 2015","format":false,"excerpt":"Th\u00e9ia (ou parfois Orph\u00e9e) est un objet hypoth\u00e9tique du Syst\u00e8me solaire, suppos\u00e9 avoir exist\u00e9 par le pass\u00e9. Selon l'hypoth\u00e8se dominante, la formation de la Lune est due \u00e0 la collision de la Terre (ou proto-Terre) avec un objet de la taille de Mars. Th\u00e9ia est l'impacteur. Ils ont trouv\u00e9 une\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/theia-impact-terre.jpg?fit=800%2C453&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/theia-impact-terre.jpg?fit=800%2C453&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/theia-impact-terre.jpg?fit=800%2C453&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/theia-impact-terre.jpg?fit=800%2C453&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":4850,"url":"https:\/\/www.laterredufutur.com\/accueil\/le-mystere-de-la-formation-de-la-lune-en-passe-detre-elucide\/","url_meta":{"origin":20664,"position":1},"title":"Le myst\u00e8re de la formation de la Lune en passe d&rsquo;\u00eatre \u00e9lucid\u00e9","author":"Admin","date":"27 avril 2009","format":false,"excerpt":"9 avril 2009 : Les sondes jumelles STEREO de la NASA sont entr\u00e9es dans une r\u00e9gion myst\u00e9rieuse de l'espace \u00e0 la recherche des restes d'une ancienne plan\u00e8te qui, autrefois fut en orbite autour du Soleil, non loin de la Terre. Si elles trouvent quelque chose, cela pourrait r\u00e9soudre un casse-t\u00eate\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":27465,"url":"https:\/\/www.laterredufutur.com\/accueil\/theia-et-la-terre-etaient-voisines-selon-de-nouvelles-recherches\/","url_meta":{"origin":20664,"position":2},"title":"Th\u00e9ia et la Terre \u00e9taient voisines, selon de nouvelles recherches","author":"Admin","date":"22 novembre 2025","format":false,"excerpt":"Il y a environ 4,5 milliards d'ann\u00e9es, l'\u00e9v\u00e9nement le plus marquant de l'histoire de la Terre s'est produit : un \u00e9norme corps c\u00e9leste nomm\u00e9 Th\u00e9ia est entr\u00e9 en collision avec la jeune Terre. Les circonstances exactes de la collision et ses cons\u00e9quences restent encore mal connues. Ce qui est certain,\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\/10\/theia-impact-terre.jpg?fit=800%2C453&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/theia-impact-terre.jpg?fit=800%2C453&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/theia-impact-terre.jpg?fit=800%2C453&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2015\/10\/theia-impact-terre.jpg?fit=800%2C453&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":22223,"url":"https:\/\/www.laterredufutur.com\/accueil\/de-vastes-fragments-dun-monde-extraterrestre-pourraient-etre-enterres-au-plus-profond-de-notre-terre\/","url_meta":{"origin":20664,"position":3},"title":"De vastes fragments d&rsquo;un monde extraterrestre pourraient \u00eatre enterr\u00e9s au plus profond de notre Terre","author":"Admin","date":"24 mars 2021","format":false,"excerpt":"Elles sont parmi les plus grandes et les plus \u00e9tranges de toutes les structures sur Terre : d'\u00e9normes et myst\u00e9rieuses \"gouttes\" de roches denses se cachent profond\u00e9ment dans les parties les plus basses du manteau de notre plan\u00e8te. Il y a deux de ces masses gigantesques - appel\u00e9es \"les grandes\u2026","rel":"","context":"Dans &quot;Arch\u00e9ologie&quot;","block_context":{"text":"Arch\u00e9ologie","link":"https:\/\/www.laterredufutur.com\/accueil\/sujets\/archeologie\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/03\/structures-manteau-terre.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\/2021\/03\/structures-manteau-terre.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/03\/structures-manteau-terre.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/03\/structures-manteau-terre.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":11033,"url":"https:\/\/www.laterredufutur.com\/accueil\/et-si-la-terre-etait-a-lorigine-deux-planetes-distinctes\/","url_meta":{"origin":20664,"position":4},"title":"Et si la Terre \u00e9tait \u00e0 l\u2019origine deux plan\u00e8tes distinctes ?","author":"Admin","date":"22 f\u00e9vrier 2016","format":false,"excerpt":"Vous connaissez tous la th\u00e9orie de base expliquant comment notre Lune se serait form\u00e9. Selon les scientifiques les plus \u00e9rudits, il y a 4,5 milliards d\u2019ann\u00e9es, un embryon de la plan\u00e8te Th\u00e9ia aurait frapp\u00e9 la Terre partiellement en la fr\u00f4lant et de ces d\u00e9bris serait n\u00e9e la Lune. On appelle\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\/02\/Collision_terre.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\/2016\/02\/Collision_terre.jpg?fit=1024%2C415&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/02\/Collision_terre.jpg?fit=1024%2C415&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/02\/Collision_terre.jpg?fit=1024%2C415&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":18377,"url":"https:\/\/www.laterredufutur.com\/accueil\/une-roche-dorigine-terrestre-retrouvee-sur-le-lune\/","url_meta":{"origin":20664,"position":5},"title":"Une roche d\u2019origine terrestre retrouv\u00e9e sur le lune","author":"Admin","date":"11 f\u00e9vrier 2019","format":false,"excerpt":"Une analyse de roche lunaire, arriv\u00e9e sur Terre dans les bagages des astronautes de la mission Apollo 14, a r\u00e9v\u00e9l\u00e9 que cette roche serait en fait d\u2019origine terrestre ! Les scientifiques de la mission Apollo 14 ne sont pas revenus les mains vides de leur exploration lunaire. Ils ont pr\u00e9lev\u00e9\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\/03\/astronaute-lune-1969.jpg?fit=700%2C542&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/03\/astronaute-lune-1969.jpg?fit=700%2C542&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/03\/astronaute-lune-1969.jpg?fit=700%2C542&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2016\/03\/astronaute-lune-1969.jpg?fit=700%2C542&ssl=1&resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/20664","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=20664"}],"version-history":[{"count":2,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/20664\/revisions"}],"predecessor-version":[{"id":20702,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/20664\/revisions\/20702"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/20665"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=20664"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=20664"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=20664"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}