{"id":580,"date":"2005-12-09T12:29:00","date_gmt":"2005-12-09T11:29:00","guid":{"rendered":"https:\/\/kids.esa.int\/the_solar_system_and_its_planets\/"},"modified":"2026-10-08T00:29:52","modified_gmt":"2026-10-07T22:29:52","slug":"the_solar_system_and_its_planets","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fr\/the_solar_system_and_its_planets\/","title":{"rendered":"Le syst\u00e8me solaire et ses plan\u00e8tes"},"content":{"rendered":"
\n

Le syst\u00e8me solaire est constitu\u00e9 du Soleil et de tous les objets plus petits qui gravitent autour de lui. Outre le Soleil, les plus grands corps du syst\u00e8me solaire sont les huit plan\u00e8tes principales. Les plus proches du Soleil sont quatre plan\u00e8tes rocheuses relativement petites : Mercure, V\u00e9nus, la Terre et Mars.<\/p>\n<\/div>\n

Le syst\u00e8me solaire comprend le Soleil et tous les objets plus petits qui tournent autour de lui. \u00c0 part le Soleil, les plus gros objets du syst\u00e8me solaire sont les huit grandes plan\u00e8tes.<\/p>\n

Au-del\u00e0 de la ceinture d'ast\u00e9ro\u00efdes se trouvent les quatre g\u00e9antes gazeuses : Jupiter, Saturne, Uranus et Neptune. Ces plan\u00e8tes sont bien plus grandes que la Terre, mais tr\u00e8s l\u00e9g\u00e8res compte tenu de leur taille. Elles sont principalement compos\u00e9es d'hydrog\u00e8ne et d'h\u00e9lium.<\/p>\n

A l\u2019extr\u00e9mit\u00e9 de la ceinture d'ast\u00e9ro\u00efdes se trouvent les quatre g\u00e9antes gazeuses que sont Jupiter, Saturne, Uranus et Neptune. Ces plan\u00e8tes sont bien plus grosses que la Terre mais tr\u00e8s l\u00e9g\u00e8res par rapport \u00e0 leur taille. Elles sont essentiellement form\u00e9es d'hydrog\u00e8ne et d'h\u00e9lium.<\/p>\n

La plan\u00e8te la plus \u00e9loign\u00e9e que nous connaissions jusqu'\u00e0 r\u00e9cemment \u00e9tait un corps glac\u00e9 appel\u00e9 Pluton. Toutefois, Pluton est \u00e9clips\u00e9e par la lune de la Terre et certains astronomes pensent qu'elle est trop petite pour \u00eatre consid\u00e9r\u00e9e comme une vraie plan\u00e8te. Un objet appel\u00e9 Eris, au moins aussi gros que Pluton, a \u00e9t\u00e9 d\u00e9couvert tr\u00e8s loin du Soleil en 2005.<\/p>\n

Plus loin encore, on trouve les com\u00e8tes du nuage d'Oort. Elles sont tellement loin qu'on ne peut pas les voir, m\u00eame avec les plus gros t\u00e9lescopes. De temps \u00e0 autre, l'une de ces com\u00e8tes est d\u00e9rang\u00e9e et se dirige vers le Soleil. Elle devient alors visible la nuit dans le ciel.<\/p>","protected":false},"excerpt":{"rendered":"

The Solar System is made up of the Sun and all of the smaller objects that move around it. Apart from the Sun, the largest members of the Solar System […]<\/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\/2014\/08\/explore_our_universe_poster\/17899681-2-eng-GB\/Explore_our_Universe_poster.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2014\/08\/Explore_our_Universe_poster","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-580","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\/580","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=580"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/580\/revisions"}],"predecessor-version":[{"id":1723,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/posts\/580\/revisions\/1723"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/media?parent=580"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/categories?post=580"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/tags?post=580"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/panel?post=580"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/language?post=580"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/age?post=580"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/duration?post=580"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/resource_type?post=580"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/audience?post=580"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fr\/wp-json\/wp\/v2\/wf_post_folders?post=580"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}