{"id":1134,"date":"2004-11-16T09:08:00","date_gmt":"2004-11-16T08:08:00","guid":{"rendered":"https:\/\/kids.esa.int\/birth_of_the_moon\/"},"modified":"2026-10-08T00:36:24","modified_gmt":"2026-10-07T22:36:24","slug":"birth_of_the_moon","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/birth_of_the_moon\/","title":{"rendered":"Kuun synty"},"content":{"rendered":"<div class=\"lede\">\n<p>Kuu on kiert\u00e4nyt Maata jo yli nelj\u00e4 miljardia vuotta. Mutta mist\u00e4 se on per\u00e4isin? Jotkut tutkijat ovat arvelleet, ett\u00e4 Maa vangitsi sen, kun se tuli liian l\u00e4helle. Toiset taas ovat arvelleet, ett\u00e4 se oli aikoinaan osa Maata.<\/p>\n<\/div>\n<p>Nyky\u00e4\u00e4n suurin osa tiedemiehist\u00e4 uskoo, ett\u00e4 Kuu on \u2018Maan lapsi\u2019. Se syntyi, kun vaeltava planeetta t\u00f6rm\u00e4si nuoreen Maahan. Valtavat m\u00e4\u00e4r\u00e4t ainesta sinkoutuivat avaruuteen ja muodostivat lopulta Kuun. T\u00e4m\u00e4 \u2018suuren t\u00f6rm\u00e4yksen\u2019 teoria selitt\u00e4isi, miksi Kuun kivet ovat hyvin samankaltaisia kuin Maan kivet.<\/p>\n<p>Toisin kuin Maa, Kuu n\u00e4ytt\u00e4\u00e4 olevan sis\u00e4lt\u00e4 kuollut. Nyky\u00e4\u00e4n siell\u00e4 ei tapahdu tulivuorenpurkauksia, ja mahdolliset kuuj\u00e4ristykset ovat hyvin pieni\u00e4. Sen ytimess\u00e4 on pieni, kiinte\u00e4 rautaydin. Magneettikentt\u00e4\u00e4 ei ole, joten tutkimusmatkailijat eiv\u00e4t voi k\u00e4ytt\u00e4\u00e4 kompasseja Kuussa.<\/p>","protected":false},"excerpt":{"rendered":"<p>The Moon has been circling the Earth for more than four billion years. But where did it come from? Some scientists thought that it was captured by the Earth when [&hellip;]<\/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\/04\/was_our_moon_once_part_of_earth2\/17885952-2-eng-GB\/Was_our_Moon_once_part_of_Earth.jpg","esa_banner_description":"Was our Moon once part of Earth?","esa_banner_credit":"ESA 2002. Illustration by Medialab.","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/04\/Was_our_Moon_once_part_of_Earth2","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-1134","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\/fi\/wp-json\/wp\/v2\/posts\/1134","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/comments?post=1134"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1134\/revisions"}],"predecessor-version":[{"id":2277,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/1134\/revisions\/2277"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=1134"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=1134"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=1134"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=1134"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=1134"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=1134"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=1134"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=1134"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=1134"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=1134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}