{"id":1076,"date":"2009-12-21T13:17:00","date_gmt":"2009-12-21T12:17:00","guid":{"rendered":"https:\/\/kids.esa.int\/rosetta_comes_home_for_final_earth_flyby\/"},"modified":"2026-10-08T00:35:41","modified_gmt":"2026-10-07T22:35:41","slug":"rosetta_comes_home_for_final_earth_flyby","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/rosetta_comes_home_for_final_earth_flyby\/","title":{"rendered":"Dernier survol de la Terre pour Rosetta"},"content":{"rendered":"<div class=\"lede\">\n<p>5 ans et demi apr\u00e8s avoir d\u00e9coll\u00e9 de la base spatiale de Guyane fran\u00e7aise, le chasseur de com\u00e8tes de l\u2019ESA, Rosetta, a de nouveau survol\u00e9 notre plan\u00e8te le temps d\u2019une br\u00e8ve visite. Au cours de la matin\u00e9e du 13 novembre, les contr\u00f4leurs du Centre d\u2019op\u00e9rations spatiales de Darmstadt en Allemagne ont confirm\u00e9 que Rosetta avait effectu\u00e9 avec succ\u00e8s son dernier survol de la Terre.<\/p>\n<\/div>\n<p>Se d\u00e9pla\u00e7ant \u00e0 la vitesse de 13,34 km\/s, la sonde a survol\u00e9 notre plan\u00e8te \u00e0 une altitude de 2 481 km. Le moment o\u00f9 elle s\u2019est le plus rapproch\u00e9e de la Terre a \u00e9t\u00e9 \u00e0 08:45:40, heure d'Europe centrale, alors qu\u2019elle survolait le sud de l\u2019\u00eele indon\u00e9sienne de Java. Ce quatri\u00e8me passage de cette sonde de 3 tonnes \u00e0 proximit\u00e9 de notre plan\u00e8te lui a donn\u00e9 l\u2019\u00e9nergie n\u00e9cessaire pour traverser la ceinture d\u2019ast\u00e9ro\u00efdes et se rendre \u00e0 son rendez-vous avec la com\u00e8te Churyumov-Gerasimenko.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"ESA (Animation by M. Graf)\" data-detail-url=\"https:\/\/www.esa.int\/Media\/Animations\/Rosetta_v31_Embrgo_untill_13Nov2009\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/media\/animations\/rosetta_v31_embrgo_untill_13nov2009\/6692-5-eng-GB\/Rosetta_v31_Embrgo_untill_13Nov2009.jpg\" alt=\"\"><\/figure>\n<p>Rosetta may also help to solve a long-standing mystery. Over the years, some spacecraft (including Rosetta) have experienced a tiny \u2013 but unexpected &#8211; change in speed as they fly past Earth. So far, no one has come up with a good explanation.<\/p>\n<p>Les chercheurs ont profit\u00e9 de ce survol pour mettre en service certains des instruments de Rosetta. Les premi\u00e8res images repr\u00e9sentaient un mince croissant dont la taille allait grandissant alors que la sonde se rapprochait de la Terre. Dans d\u2019autres, plus tardives, on distinguait le halo lumineux des agglom\u00e9rations dans la nuit et des nuages qui tournoyaient au-dessus de l'Am\u00e9rique du Nord et de l\u2019oc\u00e9an pacifique. D\u2019autres instruments ont examin\u00e9 l\u2019atmosph\u00e8re et le champ magn\u00e9tique terrestres tandis que d\u2019autres encore se sont int\u00e9ress\u00e9s \u00e0 la recherche d\u2019eau sur la Lune.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1355\" data-credit=\"ESA \u00a92009 MPS for OSIRIS Team MPS\/UPD\/LAM\/IAA\/RSSD\/INTA\/UPM\/DASP\/IDA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2009\/11\/First_view_as_Rosetta_approaches_home2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2009\/11\/first_view_as_rosetta_approaches_home2\/17902197-2-eng-GB\/First_view_as_Rosetta_approaches_home.png\" alt=\"First view as Rosetta approaches home\"><figcaption>First view as Rosetta approaches home<\/figcaption><\/figure>\n<p>Rosetta a maintenant effectu\u00e9 pr\u00e8s de 4 500 millions des 7 100 millions de kilom\u00e8tres de son voyage \u00e0 destination de la com\u00e8te. Ce dernier survol de la Terre lui a permis d\u2019accro\u00eetre sa vitesse de 3,6 km\/s et d\u2019orienter sa trajectoire vers l\u2019ext\u00e9rieur de notre syst\u00e8me solaire. La prochaine grande \u00e9tape de son p\u00e9riple de 10 ans sera le survol d\u2019un gros ast\u00e9ro\u00efde, Lutetia, pr\u00e9vu en juillet 2010. Rosetta entrera ensuite en \u00ab hibernation \u00bb puis sera r\u00e9veill\u00e9e au printemps 2014.<\/p>","protected":false},"excerpt":{"rendered":"<p>5\u00bd years after lift off from French Guiana, ESA\u2019s Rosetta comet chaser has returned home for a brief, flying visit. On the morning of 13 November, controllers at the Space [&hellip;]<\/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\/2008\/08\/rosetta_spacecraft5\/17879662-2-eng-GB\/Rosetta_spacecraft.jpg","esa_banner_description":"Rosetta spacecraft","esa_banner_credit":"ESA - J. Huart","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/08\/Rosetta_spacecraft5","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-1076","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\/1076","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=1076"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1076\/revisions"}],"predecessor-version":[{"id":4835,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1076\/revisions\/4835"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=1076"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=1076"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=1076"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=1076"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=1076"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=1076"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=1076"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=1076"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=1076"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=1076"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}