{"id":1107,"date":"2006-01-19T10:51:00","date_gmt":"2006-01-19T09:51:00","guid":{"rendered":"https:\/\/kids.esa.int\/uranus\/"},"modified":"2026-10-08T00:36:04","modified_gmt":"2026-10-07T22:36:04","slug":"uranus","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/cs\/uranus\/","title":{"rendered":"Uran"},"content":{"rendered":"
\n

Uran je sedm\u00e1 planeta od Slunce. Objevil ji William Herschel v roce 1781.<\/p>\n<\/div>\n

Uran le\u017e\u00ed v\u00edce ne\u017e 2 800 milion\u016f km od Slunce. V t\u00e9to vzd\u00e1lenosti \u010din\u00ed teplota vrchol\u016f jeho mrak\u016f -214 stup\u0148\u016f Celsia. Pohybuje se pom\u011brn\u011b pomalu a mus\u00ed urazit dlouhou cestu, tak\u017ee jedna ob\u011b\u017en\u00e1 dr\u00e1ha trv\u00e1 84 let.<\/p>\n

Uran je ob\u0159\u00ed planeta, t\u0159et\u00ed nejv\u011bt\u0161\u00ed planeta v na\u0161\u00ed slune\u010dn\u00ed soustav\u011b. Do jej\u00edho vnit\u0159ku by se ve\u0161lo 64 Zem\u00ed. Navzdory sv\u00e9 velikosti se ot\u00e1\u010d\u00ed velmi rychle. Den na Uranu trv\u00e1 pouze 17 hodin a 14 minut.<\/p>\n

Uran se ot\u00e1\u010d\u00ed jako k\u00e1\u010da, kter\u00e1 se p\u0159evr\u00e1tila na bok. To znamen\u00e1, \u017ee na p\u00f3lech je Slunce n\u011bkdy p\u0159\u00edmo nad hlavou. Na ka\u017ed\u00e9m p\u00f3lu trv\u00e1 l\u00e9to i zima 21 let, co\u017e z nich d\u011bl\u00e1 nejteplej\u0161\u00ed a nejchladn\u011bj\u0161\u00ed m\u00edsta na planet\u011b!<\/p>\n

Kdy\u017e sonda Voyager 2 v roce 1986 prolet\u011bla kolem Uranu, nebyly na n\u011bm t\u00e9m\u011b\u0159 \u017e\u00e1dn\u00e9 mraky vid\u011bt. Ned\u00e1vn\u00e9 sn\u00edmky po\u0159\u00edzen\u00e9 Hubbleov\u00fdm vesm\u00edrn\u00fdm dalekohledem v\u0161ak odhalily n\u011bkolik velmi rozs\u00e1hl\u00fdch bou\u0159\u00ed.<\/p>\n

Hlavn\u00edmi plyny v jeho hust\u00e9 atmosf\u00e9\u0159e jsou vod\u00edk a helium, s mal\u00fdm mno\u017estv\u00edm metanu. (Metan rozptyluje modr\u00e9 sv\u011btlo, a proto se Uran jev\u00ed jako modr\u00fd.) Od Jupitera a Saturnu se v\u0161ak velmi li\u0161\u00ed.<\/p>\n

Uranus se skl\u00e1d\u00e1 p\u0159ev\u00e1\u017en\u011b z \u2018led\u016f\u2019 \u2013 sm\u011bsi vody, metanu a amoniaku. V jeho st\u0159edu se pravd\u011bpodobn\u011b nach\u00e1z\u00ed mal\u00e9 skalnat\u00e9 j\u00e1dro. To znamen\u00e1, \u017ee je vzhledem ke sv\u00e9 velikosti velmi lehk\u00fd.<\/p>\n

Uran m\u00e1 27 zn\u00e1m\u00fdch m\u011bs\u00edc\u016f. \u017d\u00e1dn\u00fd z nich nen\u00ed p\u0159\u00edli\u0161 velk\u00fd. Nejv\u011bt\u0161\u00edmi m\u011bs\u00edci jsou Oberon a Titania, jejich\u017e pr\u016fm\u011br p\u0159esahuje 1 500 km.<\/p>\n

Uran m\u00e1 tak\u00e9 nejm\u00e9n\u011b tucet tmav\u00fdch, zapr\u00e1\u0161en\u00fdch prstenc\u016f. V\u011bt\u0161ina z nich je extr\u00e9mn\u011b tenk\u00e1. Jejich tvar udr\u017euj\u00ed nedalek\u00e9 \u201cpast\u00fd\u0159sk\u00e9\u201d m\u011bs\u00edce. Alespo\u0148 jeden prstenec vznik\u00e1 n\u00e1razy meteorit\u016f do mal\u00e9ho m\u011bs\u00edce.<\/p>","protected":false},"excerpt":{"rendered":"

Uranus is the seventh planet from the Sun. It was discovered by William Herschel in 1781. Uranus lies more than 2,800 million km from the Sun. At this distance, the […]<\/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\/2003\/05\/uranus2\/17876812-2-eng-GB\/Uranus.jpg","esa_banner_description":"Uranus","esa_banner_credit":"DLR","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/05\/Uranus2","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-1107","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\/cs\/wp-json\/wp\/v2\/posts\/1107","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/comments?post=1107"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/1107\/revisions"}],"predecessor-version":[{"id":2250,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/1107\/revisions\/2250"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/media?parent=1107"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/categories?post=1107"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/tags?post=1107"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/panel?post=1107"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/language?post=1107"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/age?post=1107"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/duration?post=1107"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/resource_type?post=1107"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/audience?post=1107"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/wf_post_folders?post=1107"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}