{"id":1135,"date":"2004-11-15T16:04:00","date_gmt":"2004-11-15T15:04:00","guid":{"rendered":"https:\/\/kids.esa.int\/saturn_s_rings\/"},"modified":"2026-10-08T00:36:24","modified_gmt":"2026-10-07T22:36:24","slug":"saturn_s_rings","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/saturn_s_rings\/","title":{"rendered":"Les anneaux de Saturne"},"content":{"rendered":"
\n

Saturne est connue comme la \u2018 reine des anneaux \u2019, m\u00eame si les trois autres plan\u00e8tes g\u00e9antes gazeuses \u2013 Jupiter, Uranus et Neptune \u2013 poss\u00e8dent elles aussi des anneaux. Le syst\u00e8me de Saturne occupe toutefois une place \u00e0 part, car ses anneaux sont extr\u00eamement brillants et tr\u00e8s vastes.<\/p>\n<\/div>\n

Il pourrait s'agir des vestiges d'un satellite ou d'une com\u00e8te qui se serait bris\u00e9e. Lorsqu'elles ont \u00e9t\u00e9 d\u00e9couvertes au XVIIe si\u00e8cle, les dessins les repr\u00e9sentaient comme d'\u00e9normes \u2018 oreilles de Mickey \u2019 de part et d'autre de la plan\u00e8te. \u00c0 mesure que les t\u00e9lescopes se sont perfectionn\u00e9s, les astronomes ont compris qu\u2019ils \u00e9taient constitu\u00e9s de millions de fragments de glace et de roche. Les espaces vides dans les anneaux ont \u00e9t\u00e9 d\u00e9gag\u00e9s par la gravit\u00e9 des lunes voisines.<\/p>\n

V\u00e9ritables CD g\u00e9ants, les anneaux plats font plus de 275.000 km de large, suffisamment larges pour combler une grande partie de l'espace qui s\u00e9pare la Terre de la Lune, mais ont moins d\u2019un kilom\u00e8tre d'\u00e9paisseur. Et comme Saturne et la Terre se d\u00e9placent verticalement dans leurs orbites, notre vue des anneaux change. C'est en 2003 qu'ils \u00e9taient les plus lumineux et les plus beaux. Mais tous les 15 ans, nous les voyons par la tranche. Ils deviennent alors invisibles, sauf pour les t\u00e9lescopes les plus perfectionn\u00e9s. Le moment est alors propice \u00e0 l'observation des petites lunes qui se trouvent tout pr\u00e8s des anneaux.<\/p>","protected":false},"excerpt":{"rendered":"

Saturn is famous as the ‘lord of the rings’, even though the other three giant gas planets \u2013 Jupiter, Uranus and Neptune \u2013 also have rings. Saturn’s system takes pride […]<\/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\/12\/night_side_ringplane2\/17897569-2-eng-GB\/Night_Side_Ringplane.jpg","esa_banner_description":"Saturn's rings seen by Cassini-Huygens","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\/12\/Night_Side_Ringplane2","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-1135","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\/1135","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=1135"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1135\/revisions"}],"predecessor-version":[{"id":2278,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/1135\/revisions\/2278"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=1135"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=1135"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=1135"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=1135"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=1135"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=1135"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=1135"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=1135"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=1135"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=1135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}