{"id":1129,"date":"2004-11-15T16:08:00","date_gmt":"2004-11-15T15:08:00","guid":{"rendered":"https:\/\/kids.esa.int\/saturn_s_moons\/"},"modified":"2026-10-08T00:36:20","modified_gmt":"2026-10-07T22:36:20","slug":"saturn_s_moons","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/saturn_s_moons\/","title":{"rendered":"Les lunes de Saturne"},"content":{"rendered":"
\n

Saturne a 31 lunes connues \u2013 plus que toutes les autres plan\u00e8tes \u00e0 l'exception de Jupiter. L'une d'elles, Titan, a la taille d'une plan\u00e8te, mais les autres sont plus petites. La plupart des lunes sont faites de glace et recouvertes de crat\u00e8res ronds de diff\u00e9rentes tailles. Ces crat\u00e8res ont \u00e9t\u00e9 creus\u00e9s par des com\u00e8tes et des m\u00e9t\u00e9orites rocheuses qui s'y sont \u00e9cras\u00e9es.<\/p>\n<\/div>\n

T\u00e9thys pr\u00e9sente un immense crat\u00e8re surmont\u00e9 d'un pic en son centre, ce qui lui donne l'apparence de l\u2018\u2019 \u00c9toile de la Mort \u00bb des films Star Wars. Mimas poss\u00e8de lui aussi un crat\u00e8re g\u00e9ant, large de plusieurs centaines de kilom\u00e8tres.<\/p>\n

Bien que leur surface soit extr\u00eamement froide, certaines de ces lunes semblent \u00eatre chaudes \u00e0 l'int\u00e9rieur. Certaines parties de la lune Enceladus sont lisses et semblent recouvertes d'une mati\u00e8re projet\u00e9e par des volcans de glace.<\/p>\n

\"Iapetus:
Iapetus : lumi\u00e8re et obscurit\u00e9<\/figcaption><\/figure>\n

L'un de ces autres mondes \u00e9tranges s'appelle Iapetus. L'une de ses faces est tr\u00e8s brillante mais sa face oppos\u00e9e est plus noire que du charbon. Les satellites les plus petits tournent en orbite tout pr\u00e8s des anneaux ou tr\u00e8s loin de la plan\u00e8te. Les lunes les plus \u00e9loign\u00e9es se comportent comme des conducteurs ivres prenant une rue \u00e0 sens unique dans le mauvais sens. On pense qu'elles se sont approch\u00e9es trop pr\u00e8s de Saturne et qu'elles ont \u00e9t\u00e9 captur\u00e9es par sa puissante gravit\u00e9.<\/p>\n

Certaines des plus petites lunes orbitent \u00e0 l'int\u00e9rieur des anneaux. Elles jouent le r\u00f4le de \u2018 bergers \u2019, maintenant les particules des anneaux en place. Deux d'entre elles \u00e9changent m\u00eame leurs orbites lorsque l'une d\u00e9passe l'autre.<\/p>","protected":false},"excerpt":{"rendered":"

Saturn has 31 known moons \u2013 more than any other planet except Jupiter. One of them, Titan, is planet-sized, but the others are much smaller. Most of the moons are […]<\/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\/2004\/11\/view_of_tethys_beyond_saturn2\/17882215-2-eng-GB\/View_of_Tethys_beyond_Saturn.jpg","esa_banner_description":"View of Tethys beyond Saturn","esa_banner_credit":"NASA\/JPL\/Space Science Institute","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/11\/View_of_Tethys_beyond_Saturn2","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":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1129","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1129","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=1129"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1129\/revisions"}],"predecessor-version":[{"id":4863,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1129\/revisions\/4863"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=1129"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=1129"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=1129"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=1129"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=1129"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=1129"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=1129"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=1129"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=1129"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=1129"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}