{"id":3665,"date":"2025-07-12T20:16:30","date_gmt":"2025-07-12T18:16:30","guid":{"rendered":"https:\/\/velipost.com\/?p=3665"},"modified":"2025-07-12T20:16:34","modified_gmt":"2025-07-12T18:16:34","slug":"la-terre-tourne-de-plus-en-plus-vite-et-les-scientifiques-ne-savent-pas-pourquoi","status":"publish","type":"post","link":"https:\/\/velipost.com\/?p=3665","title":{"rendered":"La Terre tourne de plus en plus vite, et les scientifiques ne savent pas pourquoi"},"content":{"rendered":"\n<p>Depuis 2020, la Terre conna\u00eet une\u00a0acc\u00e9l\u00e9ration de son mouvement de rotation, contrairement \u00e0 la tendance naturelle au ralentissement observ\u00e9e sur le long terme. Cette anomalie intrigue les scientifiques, qui n\u2019ont pour l\u2019instant\u00a0aucune explication claire.<\/p>\n\n\n\n<p>Malgr\u00e9 les influences connues comme la Lune, les s\u00e9ismes ou la fonte des glaces, cette acc\u00e9l\u00e9ration reste inexpliqu\u00e9e. Selon l\u2019expert Leonid Zotov, il pourrait s\u2019agir de\u00a0ph\u00e9nom\u00e8nes internes \u00e0 la Terre.<\/p>\n\n\n\n<p>Les trois journ\u00e9es les plus courtes de 2025\u00a0seront les 9 juillet, 22 juillet et 5 ao\u00fbt. Le 5 ao\u00fbt, la Terre tournera\u00a01,51 milliseconde plus vite que la moyenne, un \u00e9cart imperceptible pour l\u2019humain, mais suffisant pour les horloges atomiques.<\/p>\n\n\n\n<p>Les gardiens du temps (IERS) envisagent, pour la premi\u00e8re fois, d\u2019ajouter\u00a0une seconde n\u00e9gative\u00a0\u00e0 l\u2019UTC d\u2019ici 2029 ou 2035 pour rester align\u00e9s avec le temps astronomique. Ce serait une\u00a0grande premi\u00e8re\u00a0dans l\u2019histoire de la mesure du temps.<\/p>\n\n    <div class=\"xs_social_share_widget xs_share_url after_content \t\tmain_content  wslu-style-3 wslu-share-box-shaped wslu-fill-brand-hover-colored wslu-share-m-5 wslu-none wslu-share-horizontal wslu-theme-font-no wslu-main_content\">\n\n\t\t\n        <ul>\n\t\t\t                    <li class=\"xs-share-li twitter                        wslu-no-extra-data\">\n                        <a href=\"javascript:void(0);\"\n                           id=\"xs_feed_twitter\"\n                           onclick=\"xs_social_sharer(this);\"\n                           data-pid=\"3665\"\n                           data-uri_hash=\"3e7e1b68e9075e1c67605b2a5cc80d99\"\n                           data-key=\"twitter\"\n                           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Cette<\/p>\n","protected":false},"author":1,"featured_media":3666,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","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":[62],"tags":[],"class_list":["post-3665","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-science"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>La Terre tourne de plus en plus vite, et les scientifiques ne savent pas pourquoi &#8211; VeliPost<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/velipost.com\/?p=3665\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La Terre tourne de plus en plus vite, et les scientifiques ne savent pas pourquoi &#8211; VeliPost\" \/>\n<meta property=\"og:description\" content=\"Depuis 2020, la Terre conna\u00eet une\u00a0acc\u00e9l\u00e9ration de son mouvement de rotation, contrairement \u00e0 la tendance naturelle au ralentissement observ\u00e9e sur le long terme. 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