{"id":1137,"date":"2004-11-16T10:30:00","date_gmt":"2004-11-16T09:30:00","guid":{"rendered":"https:\/\/kids.esa.int\/death_of_the_dinosaurs\/"},"modified":"2026-10-08T00:36:26","modified_gmt":"2026-10-07T22:36:26","slug":"death_of_the_dinosaurs","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/death_of_the_dinosaurs\/","title":{"rendered":"La mort des dinosaures"},"content":{"rendered":"
\n

La Terre est une cible mouvante dans un stand de tir. Presque tous les jours, un petit morceau de roche de l'espace passe \u00e0 quelques millions de kilom\u00e8tres de notre plan\u00e8te \u2013 souvent inaper\u00e7u. Parfois, ils sont encore plus pr\u00e8s de la Terre que la Lune.<\/p>\n<\/div>\n

Les scientifiques pensent qu'environ 100.000 ast\u00e9ro\u00efdes de plus de 100 m\u00e8tres de large (la taille d\u2019un terrain de football) viennent 'fr\u00f4ler' la Terre. Plus de 600 'raseurs de Terre' de plus d'un kilom\u00e8tre de large ont \u00e9t\u00e9 d\u00e9couverts. Il en reste des centaines \u00e0 d\u00e9couvrir.<\/p>\n

Par intervalles de quelques milliers d'ann\u00e9es, un ast\u00e9ro\u00efde s'\u00e9crase sur notre monde. Le cas le plus r\u00e9cent s'est produit en Sib\u00e9rie en 1908. Un petit ast\u00e9ro\u00efde a aplati plus de 2.000 kilom\u00e8tres carr\u00e9 de for\u00eat. L'explosion aurait pu rayer de la carte une ville comme Paris ou Londres.<\/p>\n

Plus rarement, un impact se produit qui \u00e9limine la vie sur une grande partie de la plan\u00e8te. Il y a 65 millions d'ann\u00e9es, un ast\u00e9ro\u00efde de 10 km de large provoqua une explosion plus forte que toutes les bombes \u00e0 hydrog\u00e8nes existant sur la Terre. Il creusa un crat\u00e8re de 180 km de large au Mexique et r\u00e9pandit une couche de cendres autour de la plan\u00e8te. Des incendies se propag\u00e8rent, suivis par l'obscurit\u00e9 et un froid extr\u00eame, et provoqu\u00e8rent l'extinction des dinosaures.<\/p>","protected":false},"excerpt":{"rendered":"

Earth is a moving target in a shooting gallery. Almost every day, a small chunk of space rock passes within a few million kilometres of the planet \u2013 often unseen. […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"esa_banner_image":"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2000\/10\/artist_s_impression_of_a_catastrophic_asteroid_impact_with_the_earth2\/17866156-3-eng-GB\/Artist_s_impression_of_a_catastrophic_asteroid_impact_with_the_Earth.jpg","esa_banner_description":"Artist's impression of a catastrophic asteroid impact with the Earth","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2000\/10\/Artist_s_impression_of_a_catastrophic_asteroid_impact_with_the_Earth2","esa_external_url":"","esa_external_new_window":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":true},"categories":[46,10,11],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1137","post","type-post","status-publish","format-standard","hentry","category-comets-and-meteors","category-learn","category-our-universe","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/comments?post=1137"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1137\/revisions"}],"predecessor-version":[{"id":2280,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1137\/revisions\/2280"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=1137"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=1137"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=1137"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=1137"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=1137"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=1137"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=1137"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=1137"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=1137"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=1137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}