{"id":975,"date":"2006-04-10T09:52:00","date_gmt":"2006-04-10T07:52:00","guid":{"rendered":"https:\/\/kids.esa.int\/arrival_of_the_venus_express\/"},"modified":"2026-10-08T00:34:24","modified_gmt":"2026-10-07T22:34:24","slug":"arrival_of_the_venus_express","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/arrival_of_the_venus_express\/","title":{"rendered":"Arriv\u00e9e de Venus Express"},"content":{"rendered":"
\n

V\u00e9nus, la deuxi\u00e8me plan\u00e8te \u00e0 partir du Soleil, s\u2019appr\u00eate \u00e0 accueillir son premier visiteur europ\u00e9en. Le 11 avril, apr\u00e8s un voyage de 400 millions de kilom\u00e8tres \u00e0 travers l\u2019espace, la sonde Venus Express de l\u2019ESA entrera en orbite autour de cette myst\u00e9rieuse plan\u00e8te s\u0153ur de la Terre.<\/p>\n<\/div>\n

Avant d'entamer sa mission d'exploration de 500 jours, la sonde de 1240 kg doit effectuer une s\u00e9rie d'op\u00e9rations et de manoeuvres complexes. Cette angoissante phase d'insertion sur orbite devant se d\u00e9rouler sur 10 jours a d\u00e9but\u00e9 le 4 avril et devrait prendre fin le 13.<\/p>\n

L'objectif de l'insertion orbitale de V\u00e9nus (Venus Orbit Insertion -VOI) consiste \u00e0 ralentir la sonde. Cette d\u00e9licate et cruciale manoeuvre doit se d\u00e9rouler \u00e0 l'endroit et au moment exacts pour que Venus Express soit captur\u00e9e par la gravit\u00e9 de la plan\u00e8te.<\/p>\n

\"Venus
La trajectoire de Venus Express vers V\u00e9nus<\/figcaption><\/figure>\n

La premi\u00e8re \u00e9tape consiste \u00e0 s'assurer que la sonde est pr\u00eate. Ensuite, le matin du 11 avril, \u00e0 09h17 (heure d'\u00e9t\u00e9 d'Europe centrale), la sonde allumera son moteur principal pendant une cinquantaine de minutes pour permettre sa capture en orbite autour de V\u00e9nus.<\/p>\n

Une fois que Venus Express sera sur orbite, les contr\u00f4leurs de la mission r\u00e9tabliront le contact avec la Terre et entameront une s\u00e9rie de commandes \u00e0 distance devant \u00eatre effectu\u00e9es pendant la premi\u00e8re orbite.<\/p>\n

L'insertion orbitale est contr\u00f4l\u00e9e par un ordinateur embarqu\u00e9 \u00e0 travers une s\u00e9rie de commandes automatiques envoy\u00e9es \u00e0 Venus Express quatre jours avant le d\u00e9but de l'insertion.<\/p>\n

Toutes les op\u00e9rations sont g\u00e9r\u00e9es par l'\u00e9quipe de contr\u00f4le de Venus Express depuis le Centre europ\u00e9en d'op\u00e9rations spatiales (ESOC) de l\u2019ESA \u00e0 Darmstadt (Allemagne).<\/p>\n

Pour consulter le calendrier d\u00e9taill\u00e9 et les derni\u00e8res actualit\u00e9s, rendez-vous sur le site Web de Venus Express \u00e0 l'adresse suivante : http:\/\/venus.esa.int<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Venus, the second planet from the Sun, is about to receive its first European visitor. On 11 April, after a 400 million kilometre voyage through space, ESA’s Venus Express spacecraft […]<\/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\/2006\/04\/artist_s_impression_of_venus_express2\/17878330-2-eng-GB\/Artist_s_impression_of_Venus_Express.jpg","esa_banner_description":"Artist's impression of Venus Express","esa_banner_credit":"ESA (Image by AOES Medialab)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2006\/04\/Artist_s_impression_of_Venus_Express2","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":[10,11,12],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-975","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/975","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=975"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/975\/revisions"}],"predecessor-version":[{"id":4768,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/975\/revisions\/4768"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=975"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=975"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=975"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=975"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=975"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=975"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=975"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=975"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=975"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=975"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}