{"id":47886,"date":"2026-10-30T18:15:00","date_gmt":"2026-10-30T16:15:00","guid":{"rendered":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/?p=47886"},"modified":"2026-11-01T10:25:31","modified_gmt":"2026-11-01T08:25:31","slug":"dismoipourquoi-la-terre-est-ronde","status":"publish","type":"post","link":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/2026\/10\/30\/dismoipourquoi-la-terre-est-ronde\/","title":{"rendered":"[#DisMoiPourquoi] La terre est ronde&nbsp;?"},"content":{"rendered":"<div class=\"intext\"> Lucie 9\u00a0ans en CE1 \u00e0 l\u2019Ecole du Roucas Blanc \u00e0 Marseille\n              <\/div>\n<div class=\"paragraph\">\n<p>La Terre est ronde en raison d\u2019un ph\u00e9nom\u00e8ne physique appel\u00e9 la gravit\u00e9. Imagine une \u00e9norme boule de neige. Plus elle grandit, plus elle attire tout ce qui l\u2019entoure vers son centre, comme un aimant g\u00e9ant. Il y a 4,6\u00a0milliards d\u2019ann\u00e9es, notre plan\u00e8te s\u2019est form\u00e9e en assemblant des roches et de la poussi\u00e8re. En grossissant, la gravit\u00e9 a attir\u00e9 toute cette mati\u00e8re vers le centre avec la m\u00eame force partout. R\u00e9sultat\u00a0: elle a naturellement pris la forme d\u2019une grosse boule ronde que nous habitons\u00a0! Au-del\u00e0 de la Terre, dans le syst\u00e8me solaire, tous les objets (plan\u00e8tes, satellites) dont le diam\u00e8tre est sup\u00e9rieur \u00e0 500\u00a0km sont de forme quasi sph\u00e9rique.\u00a0\u00bb<\/p>\n<p><b>Olivier Groussin. Astronome au Laboratoire d\u2019Astrophysique de Marseille (AMU, CNRS, CNES)<\/b><\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"La Terre est ronde en raison d&rsquo;un ph&eacute;nom&egrave;ne physique appel&eacute; la gravit&eacute;. Imagine une &eacute;norme boule de neige. Plus elle grandit, plus elle attire tout ce qui l&rsquo;entoure vers son centre, comme un aimant &#8230;","protected":false},"author":1,"featured_media":47887,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[918,3926,3925,20],"tags":[2543,1617,10,2482,2545,172,16,6657,946,420,6218,383],"news-destination":[3944],"news-source":[475],"is_homepage":[],"ta_other":[],"class_list":["post-47886","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-accueil","category-accueil-merge","category-accueil-third","category-societe","tag-dismoipourquoi","tag-amu","tag-bouches-du-rhone","tag-cnrs","tag-dis-moi-pourquoi","tag-les-petits-debrouillards","tag-marseille","tag-olivier-groussin","tag-physique","tag-scientifique","tag-systeme-solaire","tag-terre","news-destination-homepage","news-source-website"],"_links":{"self":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/47886","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/comments?post=47886"}],"version-history":[{"count":2,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/47886\/revisions"}],"predecessor-version":[{"id":48093,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/posts\/47886\/revisions\/48093"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media\/47887"}],"wp:attachment":[{"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/media?parent=47886"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/categories?post=47886"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/tags?post=47886"},{"taxonomy":"news-destination","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-destination?post=47886"},{"taxonomy":"news-source","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/news-source?post=47886"},{"taxonomy":"is_homepage","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/is_homepage?post=47886"},{"taxonomy":"ta_other","embeddable":true,"href":"https:\/\/euapp01.newsmemory.com\/lamarseillaise\/news\/wp-json\/wp\/v2\/ta_other?post=47886"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}