{"id":1032,"date":"2005-06-29T08:54:00","date_gmt":"2005-06-29T06:54:00","guid":{"rendered":"https:\/\/kids.esa.int\/rosetta_ready_for_the_great_comet_crash\/"},"modified":"2026-10-08T00:35:06","modified_gmt":"2026-10-07T22:35:06","slug":"rosetta_ready_for_the_great_comet_crash","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/rosetta_ready_for_the_great_comet_crash\/","title":{"rendered":"Rosetta, pr\u00eate pour le grand impact avec la com\u00e8te"},"content":{"rendered":"
\n

Le 4 juillet, l'impacteur en cuivre de 370 kg de la sonde Deep Impact de la NASA percutera la surface glac\u00e9e de la com\u00e8te Tempel 1, cr\u00e9ant ainsi un \u00e9norme crat\u00e8re. Partout dans le monde, des t\u00e9lescopes et des observatoires spatiaux, comme le t\u00e9lescope spatial Hubble de la NASA et de l\u2019ESA, suivront de tr\u00e8s pr\u00e8s cet \u00e9v\u00e8nement et observeront le d\u00e9roulement de ce d\u00e9tonnant impact. Rosetta, le chasseur de com\u00e8te de l'ESA, participera \u00e0 l'un des programmes d'observation astronomique les plus importants au monde.<\/p>\n<\/div>\n

Rosetta doit encore patienter neuf ans avant d'atteindre son objectif, la com\u00e8te Churyumov-Gerasimenko. Elle se trouvera cependant aux premi\u00e8res loges pour observer entre le 29 juin et le 14 juillet un autre bloc de glace du syst\u00e8me solaire. Parcourant l'espace \u00e0 quelque 80 millions de km de la com\u00e8te, Rosetta utilisera ses instruments ultra sensibles pour \u00e9tudier la collision spectaculaire avec Tempel 1.<\/p>\n

\"Artist's
Repr\u00e9sentation artistique de la sonde Rosetta<\/figcaption><\/figure>\n

Avant l'impact, Rosetta observera la com\u00e8te durant trois rotations compl\u00e8tes de son noyau sombre gel\u00e9, permettant aux scientifiques de mieux conna\u00eetre l'\u00e9tat de la com\u00e8te avant la collision.<\/p>\n

Pendant et apr\u00e8s l'impact, Rosetta prendra des images \u00e0 grande distance du noyau de la com\u00e8te et du nuage de gaz et de poussi\u00e8res lib\u00e9r\u00e9 dans l'espace. D'autres instruments \u00e9tudieront la temp\u00e9rature du nuage et tenteront d'en d\u00e9terminer la composition.<\/p>\n

Tempel 1 est une com\u00e8te \u00e0 courte p\u00e9riode qui voyage entre les orbites de Mars et de Jupiter. Les scientifiques souhaitent en savoir plus sur ces vieux objets qui constituent des vestiges de la formation des plan\u00e8tes, il y a 4 milliards et demi d'ann\u00e9es.<\/p>","protected":false},"excerpt":{"rendered":"

On 4 July, a 370 kg copper probe from NASA\u2019s Deep Impact spacecraft will crash into the icy heart of comet Tempel 1, creating a huge crater. Telescopes around the […]<\/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\/2005\/06\/artist_s_impression_of_the_deep_impact_collision2\/17895423-2-eng-GB\/Artist_s_impression_of_the_Deep_Impact_collision.jpg","esa_banner_description":"Artist's impression of the Deep Impact collision","esa_banner_credit":"NASA\/JPL\/UMD\/Pat Rawlings","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/06\/Artist_s_impression_of_the_Deep_Impact_collision2","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":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1032","post","type-post","status-publish","format-standard","hentry","category-comets-and-meteors","category-learn","category-our-universe"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1032","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=1032"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1032\/revisions"}],"predecessor-version":[{"id":4807,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1032\/revisions\/4807"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=1032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=1032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=1032"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=1032"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=1032"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=1032"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=1032"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=1032"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=1032"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=1032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}