{"id":783,"date":"2011-01-25T15:27:00","date_gmt":"2011-01-25T14:27:00","guid":{"rendered":"https:\/\/kids.esa.int\/moons\/"},"modified":"2026-10-08T00:32:12","modified_gmt":"2026-10-07T22:32:12","slug":"moons","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/et\/moons\/","title":{"rendered":"Kuu"},"content":{"rendered":"
\n

Kuu on looduslik objekt, mis tiirleb planeedi \u00fcmber. Teadlased nimetavad neid tavaliselt planeetide satelliitideks (inimese loodud satelliite nimetatakse m\u00f5nikord kunstkuudeks). Meie P\u00e4ikeses\u00fcsteemis on umbes 170 kuud. Enamik neist tiirleb gaasihiidude Jupiteri ja Saturni \u00fcmber. V\u00e4ikestel planeetidel on tavaliselt v\u00e4he kuusid: Marsil on kaks, Maal on \u00fcks, samas kui Veenusel ja Merkuuril pole \u00fchtegi.<\/p>\n<\/div>\n

Maakera Kuu on planeediga v\u00f5rreldes ebatavaliselt suur. Enamik kuusid j\u00e4\u00e4b oma l\u00e4hedal asuva planeedi k\u00f5rval v\u00e4ikeseks. Siiski on m\u00f5ned Jupiteri ja Saturni kuud palju suuremad kui meie Kuu. Ganymede ja Titan on suuremad kui planeet Merkuur.<\/p>\n

Nende v\u00e4ike suurus t\u00e4hendab, et peaaegu k\u00f5ik kuud ei suuda atmosf\u00e4\u00e4ri kinni hoida. Nende n\u00f5rk gravitatsioon v\u00f5imaldab gaasidel kosmosesse p\u00f5geneda. Erandiks on Titan, Saturni s\u00fcsteemi suurim kuu. Titanil on paksem ja tihedam atmosf\u00e4\u00e4r kui Maal. M\u00f5lema atmosf\u00e4\u00e4ri peamine gaas on l\u00e4mmastik, kuid Titanil puudub hapnik ja seal ei ole elu. Selle pinda varjab oran\u017e udu. M\u00f5ned teadlased peavad Titani s\u00fcgavas k\u00fclmas olevaks primitiivseks Maaks.<\/p>\n

Arvatakse, et m\u00f5ned satelliidid, sealhulgas meie Kuu, tekkisid P\u00e4ikeses\u00fcsteemi ajaloo alguses toimunud tohutute kokkup\u00f5rgete k\u00e4igus. Kuu moodustus Maa orbiidile j\u00e4\u00e4nud rusupilvest. Teised v\u00f5isid tekkida gaasi- ja tolmupilvest, mis \u00fcmbritses hiidplaneete, kui need materjali enda poole t\u00f5mbasid. Enamik v\u00e4iksemaid kuusid on komeedid v\u00f5i asteroidid, mis j\u00e4id kinni, kui nad liikusid liiga l\u00e4hedalt suure planeedi juurest m\u00f6\u00f6da.<\/p>","protected":false},"excerpt":{"rendered":"

Moons are natural objects that orbit planets. Scientists usually refer to them as planetary satellites (human-made satellites are sometimes called artificial moons). There are about 170 moons in our Solar […]<\/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\/2008\/04\/five_saturn_moons2\/17883435-2-eng-GB\/Five_Saturn_moons.jpg","esa_banner_description":"","esa_banner_credit":"NASA \/ JPL","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/04\/Five_Saturn_moons2","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-783","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\/et\/wp-json\/wp\/v2\/posts\/783","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/comments?post=783"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/783\/revisions"}],"predecessor-version":[{"id":1926,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/783\/revisions\/1926"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=783"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=783"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=783"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=783"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=783"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=783"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=783"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=783"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=783"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=783"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}