{"id":3233,"date":"2025-07-13T21:25:45","date_gmt":"2025-07-13T20:25:45","guid":{"rendered":"https:\/\/tanja7.com\/fr\/3233"},"modified":"2025-07-13T21:25:45","modified_gmt":"2025-07-13T20:25:45","slug":"corps-celeste-sapprochant-du-soleil-a-une-vitesse-remarquable","status":"publish","type":"post","link":"https:\/\/tanja7.com\/fr\/3233","title":{"rendered":"Corps c\u00e9leste s’approchant du Soleil \u00e0 une vitesse remarquable."},"content":{"rendered":"

Des astronomes ont r\u00e9cemment observ\u00e9 un objet c\u00e9leste myst\u00e9rieux s’approchant du Soleil \u00e0 une vitesse remarquable. Baptis\u00e9 \u00ab\u00a03I ATLAS\u00a0\u00bb, il s’agit du troisi\u00e8me corps interstellaire confirm\u00e9 \u00e0 travers l’histoire moderne, apr\u00e8s \u00ab\u00a0Oumuamua\u00a0\u00bb en 2017 et \u00ab\u00a0Borisov\u00a0\u00bb en 2019.<\/p>\n

Selon les scientifiques, cette com\u00e8te, identifi\u00e9e lors de son entr\u00e9e dans le syst\u00e8me solaire, pourrait \u00eatre le plus ancien objet de ce type jamais observ\u00e9 par l’humanit\u00e9. D’apr\u00e8s la NASA, ce corps, qui est probablement une com\u00e8te, se d\u00e9place \u00e0 une vitesse d\u00e9passant 210 000 km\/h. Son point de passage le plus proche du Soleil est pr\u00e9vu pour fin octobre 2025, apr\u00e8s quoi il poursuivra sa trajectoire hors du syst\u00e8me solaire.<\/p>\n

La NASA a \u00e9galement pr\u00e9cis\u00e9 que, moins de 24 heures apr\u00e8s sa d\u00e9tection, il a \u00e9t\u00e9 confirm\u00e9 que ce corps ne fait pas partie du syst\u00e8me solaire, suscitant ainsi des interrogations sur son origine et sa composition. <\/p>\n

\u00ab\u00a03I ATLAS\u00a0\u00bb pr\u00e9sente des caract\u00e9ristiques similaires aux com\u00e8tes, \u00e9tant entour\u00e9 d’une enveloppe de gaz et de glace. Son diam\u00e8tre, incluant son atmosph\u00e8re, est estim\u00e9 \u00e0 environ 24 kilom\u00e8tres, ce qui le rend significativement plus large que ses pr\u00e9d\u00e9cesseurs, \u00ab\u00a0Oumuamua\u00a0\u00bb et \u00ab\u00a0Borisov\u00a0\u00bb.<\/p>\n

Il est important de noter que \u00ab\u00a03I ATLAS\u00a0\u00bb ne repr\u00e9sente pas une menace pour la Terre, car il s’approchera du Soleil \u00e0 une distance \u00e9quivalente \u00e0 1,5 fois celle entre la Terre et le Soleil, et ne passera pas \u00e0 moins de 1,6 unit\u00e9 astronomique (environ 240 millions de kilom\u00e8tres) de notre plan\u00e8te. Cet objet pourrait devenir visible \u00e0 l’\u0153il nu ou avec de simples t\u00e9lescopes dans les mois \u00e0 venir, alors qu’il se rapproche du Soleil.
\n
Source<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Des astronomes ont r\u00e9cemment observ\u00e9 un objet c\u00e9leste myst\u00e9rieux s’approchant du Soleil \u00e0 une vitesse remarquable. Baptis\u00e9 \u00ab\u00a03I ATLAS\u00a0\u00bb, il s’agit du troisi\u00e8me corps interstellaire confirm\u00e9 \u00e0 travers l’histoire moderne, apr\u00e8s \u00ab\u00a0Oumuamua\u00a0\u00bb en 2017 et \u00ab\u00a0Borisov\u00a0\u00bb en 2019. Selon les scientifiques, cette com\u00e8te, identifi\u00e9e lors de son entr\u00e9e dans le syst\u00e8me solaire, pourrait \u00eatre le […]<\/p>\n","protected":false},"author":1,"featured_media":3234,"comment_status":"open","ping_status":"open","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,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[104],"tags":[],"class_list":["post-3233","post","type-post","status-publish","format-standard","has-post-thumbnail","category-divers"],"yoast_head":"\nCorps c\u00e9leste s'approchant du Soleil \u00e0 une vitesse remarquable. - Tanja7 Fran\u00e7ais<\/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:\/\/tanja7.com\/fr\/3233\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:title\" content=\"Corps c\u00e9leste s'approchant du Soleil \u00e0 une vitesse remarquable. - Tanja7 Fran\u00e7ais\" \/>\n<meta name=\"twitter:description\" content=\"Des astronomes ont r\u00e9cemment observ\u00e9 un objet c\u00e9leste myst\u00e9rieux s’approchant du Soleil \u00e0 une vitesse remarquable. 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