{"id":1079,"date":"2009-03-17T09:41:00","date_gmt":"2009-03-17T08:41:00","guid":{"rendered":"https:\/\/kids.esa.int\/esa_launches_goce\/"},"modified":"2026-10-08T00:35:44","modified_gmt":"2026-10-07T22:35:44","slug":"esa_launches_goce","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/esa_launches_goce\/","title":{"rendered":"L\u2019ESA lance GOCE"},"content":{"rendered":"<div class=\"lede\">\n<p>Cet apr\u00e8s-midi GOCE a \u00e9t\u00e9 inject\u00e9 sur une orbite terrestre basse quasi-h\u00e9liosynchrone par un lanceur russe Rockot du cosmodrome de Plesetsk, en Russie septentrionale.<\/p>\n<\/div>\n<p>Ce lancement marque le d\u00e9but d\u2019une nouvelle \u00e8re dans l\u2019histoire europ\u00e9enne de l\u2019observation de la Terre. GOCE est le premier repr\u00e9sentant d\u2019une nouvelle famille de satellites de l\u2019ESA destin\u00e9s \u00e0 \u00e9tudier notre plan\u00e8te et son environnement pour mieux comprendre le fonctionnement du syst\u00e8me Terre et son \u00e9volution en vue de faire face au changement climatique global. Il mesurera en particulier les infimes variations du champ de gravit\u00e9 terrestre sur l\u2019ensemble de la plan\u00e8te.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"ESA - AOES Medialab\" data-detail-url=\"https:\/\/www.esa.int\/Media\/Animations\/GOCE_Breeze_separation\" 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\/goce_breeze_separation\/2672-5-eng-GB\/GOCE_Breeze_separation.jpg\" alt=\"\"><\/figure>\n<p>Le lanceur russe Rockot a d\u00e9coll\u00e9 \u00e0 15h21 heure de Paris en direction du nord, survolant l\u2019Arctique. Environ 90 minutes plus tard, apr\u00e8s une r\u00e9volution orbitale et deux allumages de son \u00e9tage sup\u00e9rieur Breeze-KM, le lanceur a plac\u00e9 le satellite de 1052 kilogrammes sur une orbite polaire circulaire de 280 kilom\u00e8tres d\u2019altitude inclin\u00e9e \u00e0 96,7 degr\u00e9s par rapport \u00e0 l\u2019\u00e9quateur.<\/p>\n<p>La station de poursuite de l\u2019ESA install\u00e9e \u00e0 Kiruna (Su\u00e8de) a \u00e9tabli le contact avec GOCE peu apr\u00e8s la s\u00e9paration et le satellite est d\u00e9sormais sous le contr\u00f4le des \u00e9quipes de l\u2019ESA bas\u00e9es au Centre europ\u00e9en d\u2019Op\u00e9rations spatiales \u00e0 Darmstadt (Allemagne).<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1200\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/05\/Earth_s_geoid_as_seen_by_GOCE2\" 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\/2008\/05\/earth_s_geoid_as_seen_by_goce2\/17878996-2-eng-GB\/Earth_s_geoid_as_seen_by_GOCE.jpg\" alt=\"Earth&#x27;s geoid as seen by GOCE\"><figcaption>Le g\u00e9o\u00efde terrestre tel que le per\u00e7oit GOCE<\/figcaption><\/figure>\n<p>Pendant vingt-quatre mois, GOCE collectera des donn\u00e9es gravitationnelles en trois dimensions couvrant l\u2019ensemble du globe. Le traitement au sol de ces donn\u00e9es brutes permettra d\u2019aboutir \u00e0 la carte la plus pr\u00e9cise jamais dress\u00e9e du champ de gravit\u00e9 terrestre et de d\u00e9finir le g\u00e9o\u00efde \u2013 surface de r\u00e9f\u00e9rence exacte de notre plan\u00e8te \u2013 de mani\u00e8re plus fine. Affiner la connaissance du g\u00e9o\u00efde, qui repr\u00e9sente la forme th\u00e9orique de la Terre si elle \u00e9tait recouverte d\u2019oc\u00e9ans au repos, est essentiel pour approfondir l\u2019\u00e9tude de la plan\u00e8te, de ses oc\u00e9ans et de son atmosph\u00e8re. Le g\u00e9o\u00efde d\u00e9fini servira de mod\u00e8le de r\u00e9f\u00e9rence pour mesurer et mod\u00e9liser l\u2019\u00e9volution du niveau des mers, la circulation oc\u00e9anique et la dynamique des calottes polaires.<\/p>","protected":false},"excerpt":{"rendered":"<p>This afternoon, the GOCE satellite developed by ESA was launched into a near-Sun-synchronous, low Earth orbit by a Rockot launcher lifting off from the Plesetsk cosmodrome in northern Russia. With [&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\/2009\/03\/goce_liftoff8\/17907569-2-eng-GB\/GOCE_liftoff.jpg","esa_banner_description":"GOCE liftoff","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2009\/03\/GOCE_liftoff8","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":[64,42,10],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1079","post","type-post","status-publish","format-standard","hentry","category-climate-change","category-earth","category-learn"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1079","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=1079"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1079\/revisions"}],"predecessor-version":[{"id":4838,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1079\/revisions\/4838"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=1079"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=1079"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=1079"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=1079"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=1079"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=1079"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=1079"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=1079"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=1079"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=1079"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}