{"id":27138,"date":"2025-08-08T12:00:13","date_gmt":"2025-08-08T10:00:13","guid":{"rendered":"https:\/\/www.laterredufutur.com\/accueil\/?p=27138"},"modified":"2025-08-07T15:36:28","modified_gmt":"2025-08-07T13:36:28","slug":"des-preuves-de-lexplosion-dune-comete-qui-a-change-le-monde-il-y-a-12-800-ans-ont-ete-decouvertes-dans-locean","status":"publish","type":"post","link":"https:\/\/www.laterredufutur.com\/accueil\/des-preuves-de-lexplosion-dune-comete-qui-a-change-le-monde-il-y-a-12-800-ans-ont-ete-decouvertes-dans-locean\/","title":{"rendered":"Des preuves de l&rsquo;explosion d&rsquo;une com\u00e8te qui a chang\u00e9 le monde il y a 12 800 ans ont \u00e9t\u00e9 d\u00e9couvertes dans l&rsquo;oc\u00e9an"},"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>Des grains microscopiques de poussi\u00e8re extraterrestre enfouis dans les s\u00e9diments au fond de l&rsquo;oc\u00e9an pourraient \u00eatre la preuve d&rsquo;une com\u00e8te qui a explos\u00e9 dans l&rsquo;atmosph\u00e8re terrestre il y a 12 800 ans.<\/p>\n<p>Cet \u00e9v\u00e9nement hypoth\u00e9tique, connu sous le nom d&rsquo;impact du Dryas r\u00e9cent , a \u00e9t\u00e9 invoqu\u00e9 pour expliquer une p\u00e9riode soudaine de 1 200 ans de refroidissement rapide vers des conditions quasi glaciaires, \u00e0 une \u00e9poque o\u00f9 le climat terrestre \u00e9tait en phase de r\u00e9chauffement. Cette proposition est pour le moins controvers\u00e9e , de nombreux scientifiques la rejetant cat\u00e9goriquement, tandis que d&rsquo;autres restent plus ouverts \u00e0 cette possibilit\u00e9.<\/p>\n<p>L\u2019une des principales r\u00e9futations est qu\u2019aucun crat\u00e8re n\u2019a \u00e9t\u00e9 d\u00e9couvert, comme on pourrait s\u2019y attendre apr\u00e8s un \u00e9v\u00e9nement aussi bouleversant\u2026 mais les preuves pourraient \u00eatre bien plus petites qu\u2019un crat\u00e8re.<\/p>\n<p>Dirig\u00e9e par le g\u00e9oscientifique Christopher Moore de l&rsquo;Universit\u00e9 de Caroline du Sud, une \u00e9quipe de chercheurs pr\u00e9sente une nouvelle s\u00e9rie de preuves : quatre carottes de s\u00e9diments provenant de la baie de Baffin, pr\u00e8s du Groenland.<\/p>\n<p>Il s\u2019agit de cylindres de mat\u00e9riaux excav\u00e9s verticalement qui pr\u00e9servent des couches successives de s\u00e9diments du fond marin qui ont \u00e9t\u00e9 d\u00e9pos\u00e9s au cours de plusieurs mill\u00e9naires.<\/p>\n<figure id=\"attachment_27139\" aria-describedby=\"caption-attachment-27139\" style=\"width: 642px\" class=\"wp-caption alignnone\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"27139\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/des-preuves-de-lexplosion-dune-comete-qui-a-change-le-monde-il-y-a-12-800-ans-ont-ete-decouvertes-dans-locean\/spherules-yd\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/spherules-yd.jpg?fit=642%2C486&amp;ssl=1\" data-orig-size=\"642,486\" 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=\"spherules-yd\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Quelques microsph\u00e9rules riches en silice et en fer trouv\u00e9es dans les noyaux. (Moore et al., PLOS One , 2025)&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/spherules-yd.jpg?fit=300%2C227&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/spherules-yd.jpg?fit=642%2C486&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/spherules-yd.jpg?resize=642%2C486&#038;ssl=1\" alt=\"\" width=\"642\" height=\"486\" class=\"size-full wp-image-27139\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/spherules-yd.jpg?w=642&amp;ssl=1 642w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/spherules-yd.jpg?resize=300%2C227&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/spherules-yd.jpg?resize=80%2C60&amp;ssl=1 80w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/spherules-yd.jpg?resize=174%2C131&amp;ssl=1 174w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/spherules-yd.jpg?resize=70%2C53&amp;ssl=1 70w\" sizes=\"auto, (max-width: 642px) 100vw, 642px\" \/><figcaption id=\"caption-attachment-27139\" class=\"wp-caption-text\">Quelques microsph\u00e9rules riches en silice et en fer trouv\u00e9es dans les noyaux. (Moore et al., PLOS One , 2025)<\/figcaption><\/figure>\n<p>\u00ab Nous avons choisi d&rsquo;analyser les carottes marines de la baie de Baffin pour d\u00e9terminer si les indicateurs d&rsquo;impact du Dryas r\u00e9cent signal\u00e9s dans des dizaines de sites terrestres \u00e0 travers le monde \u00e9taient pr\u00e9sents dans les carottes oc\u00e9aniques \u00bb, explique Moore dans une interview avec la revue scientifique PLOS One .<\/p>\n<p>\u00ab Les sites \u00e9taient importants car ils se trouvaient \u00e0 une distance consid\u00e9rable d&rsquo;une contamination anthropique [humaine] potentielle et, dans la plupart des cas, les carottes \u00e9taient fortement lamin\u00e9es, ce qui indique que l&rsquo;enregistrement \u00e9tait relativement intact. \u00bb<\/p>\n<p>Les chercheurs ont utilis\u00e9 la datation au radiocarbone pour d\u00e9terminer l&rsquo;\u00e2ge des couches, puis ont utilis\u00e9 une technique appel\u00e9e spectrom\u00e9trie de masse \u00e0 temps de vol \u00e0 plasma \u00e0 couplage inductif \u00e0 particule unique pour rechercher des signes de poussi\u00e8re de com\u00e8te dans les couches d\u00e9pos\u00e9es pendant la p\u00e9riode de refroidissement du Dryas r\u00e9cent.<\/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<figure id=\"attachment_27140\" aria-describedby=\"caption-attachment-27140\" style=\"width: 642px\" class=\"wp-caption alignnone\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"27140\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/des-preuves-de-lexplosion-dune-comete-qui-a-change-le-monde-il-y-a-12-800-ans-ont-ete-decouvertes-dans-locean\/mdps-yd\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/mdps-yd.jpg?fit=642%2C735&amp;ssl=1\" data-orig-size=\"642,735\" 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=\"mdps-yd\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Quelques particules de poussi\u00e8re m\u00e9tallique extraites des noyaux. (Moore et al., PLOS One , 2025)&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/mdps-yd.jpg?fit=262%2C300&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/mdps-yd.jpg?fit=642%2C735&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/mdps-yd.jpg?resize=642%2C735&#038;ssl=1\" alt=\"\" width=\"642\" height=\"735\" class=\"size-full wp-image-27140\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/mdps-yd.jpg?w=642&amp;ssl=1 642w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/mdps-yd.jpg?resize=262%2C300&amp;ssl=1 262w\" sizes=\"auto, (max-width: 642px) 100vw, 642px\" \/><figcaption id=\"caption-attachment-27140\" class=\"wp-caption-text\">Quelques particules de poussi\u00e8re m\u00e9tallique extraites des noyaux. (Moore et al., PLOS One , 2025)<\/figcaption><\/figure>\n<p>Cette analyse a r\u00e9v\u00e9l\u00e9 de minuscules particules de m\u00e9tal dont la composition correspond \u00e0 une origine com\u00e9taire, notamment du fer \u00e0 faible teneur en oxyg\u00e8ne et \u00e0 forte teneur en nickel, ainsi que des microsph\u00e9rules riches en fer et en silice.<\/p>\n<p>Ces microsph\u00e9rules, disent les chercheurs, sont principalement constitu\u00e9es de mat\u00e9riaux provenant de la Terre, mais avec un peu de mat\u00e9riaux d&rsquo;impact m\u00e9lang\u00e9s &#8211; probablement provenant d&rsquo;un \u00e9v\u00e9nement d&rsquo;explosion a\u00e9rienne lorsque la com\u00e8te a explos\u00e9 apr\u00e8s son entr\u00e9e dans l&rsquo;atmosph\u00e8re.<\/p>\n<p>\u00ab La couche s\u00e9dimentaire du Dryas r\u00e9cent dans les carottes de Baffin contient de multiples indices compatibles avec un impact. Des microsph\u00e9rules, des particules de poussi\u00e8re m\u00e9tallique tordues et d\u00e9form\u00e9es dont la composition chimique correspond \u00e0 celle d&rsquo;une com\u00e8te ou d&rsquo;un m\u00e9t\u00e9ore, du verre fondu et l&rsquo;identification de pics de nanoparticules dans des \u00e9l\u00e9ments cl\u00e9s (par exemple, le platine et l&rsquo;iridium) sugg\u00e8rent un impact \u00bb, explique Moore.<\/p>\n<p>\u00ab Ces donn\u00e9es sont corrobor\u00e9es par les observations r\u00e9alis\u00e9es sur des sites terrestres r\u00e9partis sur plusieurs continents des deux h\u00e9misph\u00e8res. Ces travaux s&rsquo;appuient sur d&rsquo;autres preuves indiquant que l&rsquo;impact du Dryas r\u00e9cent \u00e9tait probablement d&rsquo;ampleur mondiale. \u00bb<\/p>\n<figure id=\"attachment_27141\" aria-describedby=\"caption-attachment-27141\" style=\"width: 642px\" class=\"wp-caption alignnone\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" data-attachment-id=\"27141\" data-permalink=\"https:\/\/www.laterredufutur.com\/accueil\/des-preuves-de-lexplosion-dune-comete-qui-a-change-le-monde-il-y-a-12-800-ans-ont-ete-decouvertes-dans-locean\/glass-yd\/\" data-orig-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/glass-yd.jpg?fit=642%2C322&amp;ssl=1\" data-orig-size=\"642,322\" 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=\"glass-yd\" data-image-description=\"\" data-image-caption=\"&lt;p&gt;Particules de verre fondu par impact trouv\u00e9es dans les carottes de Baffin. (Moore et al., PLOS One , 2025)&lt;\/p&gt;\n\" data-medium-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/glass-yd.jpg?fit=300%2C150&amp;ssl=1\" data-large-file=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/glass-yd.jpg?fit=642%2C322&amp;ssl=1\" src=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/glass-yd.jpg?resize=642%2C322&#038;ssl=1\" alt=\"\" width=\"642\" height=\"322\" class=\"size-full wp-image-27141\" srcset=\"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/glass-yd.jpg?w=642&amp;ssl=1 642w, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2025\/08\/glass-yd.jpg?resize=300%2C150&amp;ssl=1 300w\" sizes=\"auto, (max-width: 642px) 100vw, 642px\" \/><figcaption id=\"caption-attachment-27141\" class=\"wp-caption-text\">Particules de verre fondu par impact trouv\u00e9es dans les carottes de Baffin. (Moore et al., PLOS One , 2025)<\/figcaption><\/figure>\n<p>Les chercheurs pr\u00e9voient ensuite d\u2019\u00e9largir l\u2019\u00e9chelle de leur enqu\u00eate en examinant des carottes de s\u00e9diments provenant d\u2019autres sites oc\u00e9aniques du monde entier.<\/p>\n<p>Leurs r\u00e9sultats ont \u00e9t\u00e9 publi\u00e9s dans <a href=\"https:\/\/doi.org\/10.1371\/journal.pone.0328347\" target=\"_blank\">PLOS One.<\/a><\/p>\n<p>Adaptation <a href=\"https:\/\/www.laterredufutur.com\/accueil\/\">Terra Projects<\/a><br \/>\nSource : <a href=\"https:\/\/www.sciencealert.com\/evidence-of-world-changing-comet-explosion-12800-years-ago-found-in-the-ocean\" target=\"_blank\">https:\/\/www.sciencealert.com\/<\/a><\/p>\n<p class=\"bawpvc-ajax-counter\" data-id=\"27138\">(146)<\/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>Des grains microscopiques de poussi\u00e8re extraterrestre enfouis dans les s\u00e9diments au fond de l&rsquo;oc\u00e9an pourraient \u00eatre la preuve d&rsquo;une com\u00e8te&#8230;<\/p>\n","protected":false},"author":1,"featured_media":25335,"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":"","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}},"categories":[22,21],"tags":[1801,1521,6406,2479,703,8245],"class_list":["post-27138","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-espace","category-evenement-brutal","tag-12800-ans","tag-comete","tag-comete-clovis","tag-dryas","tag-impact","tag-nouvelles-preuves","wpcat-22-id","wpcat-21-id"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/comete-asteroide-1.jpg?fit=1280%2C720&ssl=1","jetpack_shortlink":"https:\/\/wp.me\/p631RN-73I","jetpack-related-posts":[{"id":25297,"url":"https:\/\/www.laterredufutur.com\/accueil\/limpact-dune-comete-a-declenche-un-changement-massif-sur-terre-il-y-a-13-000-ans\/","url_meta":{"origin":27138,"position":0},"title":"L&rsquo;impact d&rsquo;une com\u00e8te a d\u00e9clench\u00e9 un changement massif sur Terre il y a 13 000 ans","author":"Admin","date":"21 octobre 2023","format":false,"excerpt":"Imaginez que vous soyez un chasseur-cueilleur il y a pr\u00e8s de 13 000 ans. Il cueillait des baies et chassait des animaux sauvages - quand soudain une gigantesque boule de feu apparu dans le ciel. Elle explosa dans un fracas assourdissant, envoyant des ondes de choc vers le sol et\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\/2023\/10\/comete-asteroide.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\/10\/comete-asteroide.jpg?fit=1200%2C675&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/comete-asteroide.jpg?fit=1200%2C675&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/comete-asteroide.jpg?fit=1200%2C675&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2023\/10\/comete-asteroide.jpg?fit=1200%2C675&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":27275,"url":"https:\/\/www.laterredufutur.com\/accueil\/lexplosion-dune-comete-a-t-elle-aneanti-la-culture-clovis-de-nouvelles-preuves-le-confirment\/","url_meta":{"origin":27138,"position":1},"title":"L&rsquo;explosion d&rsquo;une com\u00e8te a-t-elle an\u00e9anti la culture Clovis ? De nouvelles preuves le confirment","author":"Admin","date":"27 septembre 2025","format":false,"excerpt":"La Terre est soumise \u00e0 une pluie cosmique constante de mat\u00e9riaux. La grande majorit\u00e9 de ces mat\u00e9riaux sont de minuscules microm\u00e9t\u00e9orites qui se consument dans l'atmosph\u00e8re, jusqu'\u00e0 100 tonnes par jour selon certaines estimations. Mais parfois, des objets bien plus gros frappent la Terre. Le plus notable est probablement l'\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\/03\/culture-clovis.jpg?fit=640%2C426&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/03\/culture-clovis.jpg?fit=640%2C426&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2018\/03\/culture-clovis.jpg?fit=640%2C426&ssl=1&resize=525%2C300 1.5x"},"classes":[]},{"id":23772,"url":"https:\/\/www.laterredufutur.com\/accueil\/il-y-a-13-000-ans-une-tempete-de-feu-a-balaye-10-de-la-surface-de-la-terre-declenchant-une-periode-glaciaire\/","url_meta":{"origin":27138,"position":2},"title":"Il y a 13 000 ans, une temp\u00eate de feu a balay\u00e9 10 % de la surface de la Terre, d\u00e9clenchant une p\u00e9riode glaciaire","author":"Admin","date":"24 f\u00e9vrier 2022","format":false,"excerpt":"Il y a environ 12 800 ans, un dixi\u00e8me de la surface de la Terre s'est soudainement retrouv\u00e9 recouvert de tr\u00e8s violents incendies. Cette temp\u00eate de feu, comparable \u00e0 celle qui a an\u00e9anti les dinosaures, a probablement \u00e9t\u00e9 provoqu\u00e9e par les fragments d'une com\u00e8te d'environ 100 kilom\u00e8tres de diam\u00e8tre. En\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\/2022\/02\/feu-incendies.jpg?fit=960%2C640&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/02\/feu-incendies.jpg?fit=960%2C640&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/02\/feu-incendies.jpg?fit=960%2C640&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2022\/02\/feu-incendies.jpg?fit=960%2C640&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":26904,"url":"https:\/\/www.laterredufutur.com\/accueil\/il-y-a-12900-ans-la-comete-clovis-aussi-appelee-la-comete-du-younger-dryas-frappait-notre-monde\/","url_meta":{"origin":27138,"position":3},"title":"Il y a environ 12900 ans, la com\u00e8te Clovis aussi appel\u00e9e la com\u00e8te du Younger Dryas frappait notre monde","author":"Admin","date":"18 mai 2025","format":false,"excerpt":"En 2007, un groupe de chercheurs, dirig\u00e9 par un physicien nucl\u00e9aire nomm\u00e9 Richard Firestone, a annonc\u00e9 une d\u00e9couverte \u00e9tonnante. Ils ont trouv\u00e9 la preuve qu'il y a 12 900 ans, une com\u00e8te - ou peut-\u00eatre toute une flotte de com\u00e8tes - a frapp\u00e9 la Terre et chang\u00e9 le cours de\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\/2019\/03\/mammouth-feu.jpg?fit=1050%2C590&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/mammouth-feu.jpg?fit=1050%2C590&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/mammouth-feu.jpg?fit=1050%2C590&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/mammouth-feu.jpg?fit=1050%2C590&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/mammouth-feu.jpg?fit=1050%2C590&ssl=1&resize=1050%2C600 3x"},"classes":[]},{"id":22664,"url":"https:\/\/www.laterredufutur.com\/accueil\/limpact-dune-comete-pourrait-avoir-declenche-un-changement-de-civilisation\/","url_meta":{"origin":27138,"position":4},"title":"L&rsquo;impact d&rsquo;une com\u00e8te pourrait avoir d\u00e9clench\u00e9 un changement de civilisation","author":"Admin","date":"24 juin 2021","format":false,"excerpt":"Selon une \u00e9tude, un groupe de fragments d'une com\u00e8te qui aurait frapp\u00e9 la Terre il y a pr\u00e8s de 13 000 ans pourrait avoir fa\u00e7onn\u00e9 les origines de la civilisation humaine. Selon les chercheurs, cet impact cosmique, probablement le plus d\u00e9vastateur depuis l'extinction des dinosaures, semble co\u00efncider avec des changements\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\/06\/cratere-grands-lacs.jpg?fit=1046%2C700&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/06\/cratere-grands-lacs.jpg?fit=1046%2C700&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/06\/cratere-grands-lacs.jpg?fit=1046%2C700&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2021\/06\/cratere-grands-lacs.jpg?fit=1046%2C700&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":18672,"url":"https:\/\/www.laterredufutur.com\/accueil\/il-y-a-pres-de-13-000-ans-un-impact-de-comete-a-cree-des-incendies-planetaires\/","url_meta":{"origin":27138,"position":5},"title":"Il y a pr\u00e8s de 13 000 ans, un impact de com\u00e8te a cr\u00e9\u00e9 des incendies plan\u00e9taires","author":"Admin","date":"24 mars 2019","format":false,"excerpt":"Il y a environ 12 800 ans, la plan\u00e8te Terre a travers\u00e9 une vague de froid qui n'a aucun lien avec l'origine des autres \u00e2ges glaciaires \"r\u00e9cents\". Pendant des ann\u00e9es, des g\u00e9ologues ont fait valoir que cette p\u00e9riode \u00e9tait caus\u00e9e par une explosion a\u00e9rienne d'une com\u00e8te ou de fragments de\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\/2019\/03\/mammouth-feu.jpg?fit=1050%2C590&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/mammouth-feu.jpg?fit=1050%2C590&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/mammouth-feu.jpg?fit=1050%2C590&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/mammouth-feu.jpg?fit=1050%2C590&ssl=1&resize=700%2C400 2x, https:\/\/i0.wp.com\/www.laterredufutur.com\/accueil\/wp-content\/uploads\/2019\/03\/mammouth-feu.jpg?fit=1050%2C590&ssl=1&resize=1050%2C600 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/27138","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=27138"}],"version-history":[{"count":1,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/27138\/revisions"}],"predecessor-version":[{"id":27142,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/posts\/27138\/revisions\/27142"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media\/25335"}],"wp:attachment":[{"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/media?parent=27138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/categories?post=27138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laterredufutur.com\/accueil\/wp-json\/wp\/v2\/tags?post=27138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}