{"id":967,"date":"2005-01-14T09:43:00","date_gmt":"2005-01-14T08:43:00","guid":{"rendered":"https:\/\/kids.esa.int\/huygens_makes_history_on_titan\/"},"modified":"2026-10-08T00:34:19","modified_gmt":"2026-10-07T22:34:19","slug":"huygens_makes_history_on_titan","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/huygens_makes_history_on_titan\/","title":{"rendered":"Huygens ouvre une page d'histoire sur Titan"},"content":{"rendered":"
\n

Une page d'histoire s'est ouverte t\u00f4t ce matin quand Huygens, la sonde de l'Agence spatiale europ\u00e9enne, s'est pos\u00e9e avec succ\u00e8s sur Titan, la plus grande lune de Saturne.<\/p>\n<\/div>\n

Les signaux parvenus cet apr\u00e8s-midi au Centre europ\u00e9en d'op\u00e9rations spatiales (ESOC) \u00e0 Darmstadt (Allemagne) indiquent que la petite sonde en forme de soucoupe a surv\u00e9cu \u00e0 son entr\u00e9e dans l'atmosph\u00e8re dense de Titan.<\/p>\n

C'est la premi\u00e8re fois que l'homme tente de poser une sonde \u00e0 la surface d'un monde de la taille d\u2019une plan\u00e8te dans le syst\u00e8me solaire externe.<\/p>\n

Au terme d'un voyage interplan\u00e9taire de sept ans sur l'orbiteur Cassini, Huygens s'est d\u00e9tach\u00e9e le 25 d\u00e9cembre dernier.<\/p>\n

\"Huygens
Huygens en descente avec son parachute<\/figcaption><\/figure>\n

Un grand parachute s'est ensuite ouvert. \u00c0 une altitude de l'ordre de 160 km au-dessus de la surface de Titan, les instruments scientifiques de la sonde ont commenc\u00e9 \u00e0 prendre des photos et \u00e0 \u00e9tudier l'atmosph\u00e8re.<\/p>\n

Pendant plus de deux heures, Huygens a envoy\u00e9 les donn\u00e9es recueillies \u00e0 Cassini alors qu'il \u00e9tait encore visible au-dessus de l'horizon.<\/p>\n

Devant parcourir les 1 200 millions de kilom\u00e8tres qui s\u00e9parent actuellement Saturne de la Terre, les signaux ont mis 67 minutes pour nous parvenir.<\/p>\n

Enfin, un \u00e9norme r\u00e9cepteur radio aux \u00c9tats-Unis a re\u00e7u les chuchotements de Cassini. Les donn\u00e9es ont ensuite \u00e9t\u00e9 envoy\u00e9es \u00e0 l'ESOC pour leur analyse. L'attente interminable des scientifiques avait pris fin.<\/p>\n

\"Titan est un monde fascinant et nous attendons avec impatience les r\u00e9sultats scientifiques,\" a d\u00e9clar\u00e9 le Professeur David Southwood, Directeur du programme scientifique de l'ESA.<\/p>","protected":false},"excerpt":{"rendered":"

History was made earlier today when ESA\u2019s Huygens probe successfully landed on Saturn\u2019s largest moon, Titan. Signals received this afternoon at the European Space Operations Centre (ESOC) in Darmstadt, Germany, […]<\/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\/01\/artist_s_impression_of_huygens_touchdown2\/17878885-2-eng-GB\/Artist_s_impression_of_Huygens_touchdown.jpg","esa_banner_description":"Artist's impression of Huygens touchdown","esa_banner_credit":"ESA \/ D. Ducros","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2005\/01\/Artist_s_impression_of_Huygens_touchdown2","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-967","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\/967","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=967"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/967\/revisions"}],"predecessor-version":[{"id":4760,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/967\/revisions\/4760"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=967"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=967"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=967"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=967"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=967"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=967"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=967"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=967"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=967"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=967"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}