{"id":972,"date":"2005-10-18T14:09:00","date_gmt":"2005-10-18T12:09:00","guid":{"rendered":"https:\/\/kids.esa.int\/venus_express_ready_for_lift-off\/"},"modified":"2026-10-08T00:34:23","modified_gmt":"2026-10-07T22:34:23","slug":"venus_express_ready_for_lift-off","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/venus_express_ready_for_lift-off\/","title":{"rendered":"Venus Express, pr\u00eat pour le d\u00e9collage !"},"content":{"rendered":"
\n

Pr\u00e9vue pour \u00eatre lanc\u00e9e \u00e0 bord d'une fus\u00e9e russe Soyouz le 9 novembre, Venus Express sera la premi\u00e8re sonde spatiale de l'ESA \u00e0 explorer la plan\u00e8te presque jumelle de la Terre. Elle devrait se mettre en orbite autour de V\u00e9nus en avril 2006.<\/p>\n<\/div>\n

Orbitant entre 250 et 66 000 km au-dessus de ses p\u00f4les, la sonde passera deux ann\u00e9es v\u00e9nusiennes (500 jours terrestres) \u00e0 \u00e9tudier l'\u00e9paisse couche nuageuse et l'atmosph\u00e8re de la plan\u00e8te la plus proche de la Terre.<\/p>\n

\"Artist's
Repr\u00e9sentation artistique de la surface de V\u00e9nus<\/figcaption><\/figure>\n

Plus de 20 sondes spatiales russes et am\u00e9ricaines ont \u00e9t\u00e9 envoy\u00e9es pour explorer la deuxi\u00e8me plan\u00e8te \u00e0 partir du Soleil, mais de nombreux myst\u00e8res subsistent :<\/p>\n

    \n
  • \n

    Quelles sont la temp\u00e9rature et la composition de l'atmosph\u00e8re ?<\/p>\n<\/li>\n

  • \n

    Comment l'atmosph\u00e8re circule-t-elle ?<\/p>\n<\/li>\n

  • \n

    Comment sa composition change-t-elle du haut vers le bas ?<\/p>\n<\/li>\n

  • \n

    Comment l'atmosph\u00e8re interagit-elle avec la surface de la plan\u00e8te ?<\/p>\n<\/li>\n

  • \n

    Comment la haute atmosph\u00e8re interagit-elle avec le vent solaire ?<\/p>\n<\/li>\n<\/ul>\n

    Les sept instruments scientifiques embarqu\u00e9s \u00e0 bord de Venus Express tenteront de percer ces myst\u00e8res.<\/p>\n

    Comme le sugg\u00e8re son nom, Venus Express a \u00e9t\u00e9 con\u00e7ue et construite en trois ans seulement \u2013 un temps record pour un projet de cette ampleur. Similaire \u00e0 l'orbiteur Mars Express de l'ESA, qui est un grand succ\u00e8s, cette sonde a \u00e9t\u00e9 adapt\u00e9e pour supporter des temp\u00e9ratures et un rayonnement plus \u00e9lev\u00e9s autour de V\u00e9nus. La plupart des instruments reprenent ceux qui avaient \u00e9t\u00e9 d\u00e9velopp\u00e9s pour les missions Mars Express et Rosetta.<\/p>","protected":false},"excerpt":{"rendered":"

    Due for launch on board a Russian Soyuz rocket on 9 November, Venus Express will be the first ESA spacecraft to explore Earth\u2019s near-twin. It is expected to enter orbit […]<\/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\/10\/venus_express-arrivee_sur_venus2\/17896423-2-eng-GB\/Venus_Express-Arrivee_sur_Venus.jpg","esa_banner_description":"Venus Express","esa_banner_credit":"ESA-D. Ducros","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/10\/Venus_Express-Arrivee_sur_Venus2","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-972","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\/972","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=972"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/972\/revisions"}],"predecessor-version":[{"id":4765,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/972\/revisions\/4765"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=972"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=972"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=972"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=972"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=972"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=972"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=972"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=972"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=972"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=972"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}