{"id":824,"date":"2004-12-02T15:53:00","date_gmt":"2004-12-02T14:53:00","guid":{"rendered":"https:\/\/kids.esa.int\/check_it_out\/"},"modified":"2026-10-08T00:32:42","modified_gmt":"2026-10-07T22:32:42","slug":"check_it_out","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/check_it_out\/","title":{"rendered":"Tout v\u00e9rifier"},"content":{"rendered":"
\n

Il n'y a pas de garage dans l'espace. Une fois qu\u2019un vaisseau spatial a quitt\u00e9 la Terre, tout le monde esp\u00e8re que tous ses syst\u00e8mes embarqu\u00e9s fonctionneront correctement. Au cours des premi\u00e8res orbites, le Centre europ\u00e9en d\u2019op\u00e9rations spatiales (ESOC) de l\u2019ESA a pour mission de v\u00e9rifier que le vaisseau spatial se trouve bien sur la bonne orbite et que ses principaux syst\u00e8mes \u2013 communications, alimentation \u00e9lectrique, etc. \u2013 fonctionnent correctement.<\/p>\n<\/div>\n

Si le vaisseau spatial fonctionne \u00e0 l'\u00e9nergie solaire, l'une des premi\u00e8res t\u00e2ches consiste \u00e0 d\u00e9ployer ses \u2018 ailes \u2019 afin qu'elles puissent capter la lumi\u00e8re du soleil.<\/p>\n

Une fois que le vaisseau spatial a \u00e9t\u00e9 test\u00e9 avec succ\u00e8s, les ing\u00e9nieurs commencent \u00e0 mettre les instruments en marche, un par un. C'est ce qu'on appelle la \u2018 mise en service \u2019.<\/p>\n

Les premi\u00e8res images ou relev\u00e9s montrent si les instruments fonctionnent comme pr\u00e9vu. Si ce n\u2019est pas le cas, ils sont r\u00e9gl\u00e9s pour am\u00e9liorer leur performance. L\u2019 ESOC doit \u00e9galement s\u2019assurer que les instruments ne cr\u00e9ent pas d\u2019interf\u00e9rences les uns avec les autres.<\/p>\n

L\u2019un des programmes de mise en service les plus complexes a \u00e9t\u00e9 celui des satellites Cluster de l\u2019ESA. Lanc\u00e9s \u00e0 l\u2019\u00e9t\u00e9 2000, les quatre satellites Cluster avaient 44 instruments \u00e0 bord.<\/p>\n

Des \u00e9quipes de scientifiques et d\u2019ing\u00e9nieurs ont d\u00fb suivre un plan minutieux pour surveiller et v\u00e9rifier chacun des satellites et ses instruments. Il a fallu plus de trois mois pour que les satellites soient pr\u00eats \u00e0 commencer leur mission d\u2019\u00e9tude des interactions entre le Soleil et la Terre.<\/p>","protected":false},"excerpt":{"rendered":"

There is no garage in space. Once a spacecraft has left planet Earth, everyone hopes that all of its onboard systems will work properly. During the first few orbits, 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\/2003\/11\/main_control_room_at_esoc_darmstadt_germany2\/17905163-2-eng-GB\/Main_Control_Room_at_ESOC_Darmstadt_Germany.jpg","esa_banner_description":"Main Control Room at ESOC, Darmstadt, Germany","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/11\/Main_Control_Room_at_ESOC_Darmstadt_Germany2","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":[10,65,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-824","post","type-post","status-publish","format-standard","hentry","category-learn","category-mission-control","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/824","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=824"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/824\/revisions"}],"predecessor-version":[{"id":1967,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/824\/revisions\/1967"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=824"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=824"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=824"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=824"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=824"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=824"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=824"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=824"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=824"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=824"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}