{"id":197,"date":"2021-12-02T12:43:24","date_gmt":"2021-12-02T11:43:24","guid":{"rendered":"https:\/\/kids.esa.int\/the_universe\/"},"modified":"2026-10-08T00:25:22","modified_gmt":"2026-10-07T22:25:22","slug":"the_universe","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/et\/the_universe\/","title":{"rendered":"Universum"},"content":{"rendered":"
\n

Universum on k\u00f5ik, mida me saame puudutada, tunda, tajuda, m\u00f5\u00f5ta v\u00f5i avastada. See h\u00f5lmab elusolendeid, planeete, t\u00e4hti, galaktikaid, tolmupilvi, valgust ja isegi aega. Enne universumi s\u00fcndi ei olnud aega, ruumi ega ainet.<\/p>\n<\/div>\n

Universumis on miljardeid galaktikaid, millest iga\u00fcks sisaldab miljoneid v\u00f5i miljardeid t\u00e4hti. T\u00e4htede ja galaktikate vaheline ruum on suures osas t\u00fchi. Siiski leidub isegi t\u00e4htedest ja planeetidest kaugel asuvates kohtades hajutatud tolmuosakesi v\u00f5i m\u00f5ned vesiniku aatomid kuupcentimeetri kohta. Kosmos on t\u00e4is ka kiirgust (nt valgust ja soojust), magnetv\u00e4lju ja k\u00f5rge energiaga osakesi (nt kosmilisi kiiri).<\/p>\n

Universum on uskumatult suur. Kaasaegsel h\u00e4vituslennukil kuluks \u00fcle miljoni aasta, et j\u00f5uda P\u00e4ikesele l\u00e4hima t\u00e4heni. Valguse kiirusel (300 000 km sekundis) kuluks ainu\u00fcksi meie Linnutee galaktika l\u00e4bimiseks 100 000 aastat.<\/p>\n

Keegi ei tea universumi t\u00e4pset suurust, sest me ei n\u00e4e selle serva \u2013 kui see \u00fcldse olemas on. Teame vaid seda, et n\u00e4htava universumi l\u00e4bim\u00f5\u00f5t on v\u00e4hemalt 93 miljardit valgusaastat. (Valgusaasta on vahemaa, mille valgus l\u00e4bib \u00fche aasta jooksul \u2013 umbes 9 triljonit km.)<\/p>\n

Universum pole alati olnud sama suur. Teadlased usuvad, et see sai alguse Suure Pauguga, mis toimus ligi 14 miljardit aastat tagasi. Sellest ajast alates on universum v\u00e4ga suure kiirusega v\u00e4ljapoole laienenud. Seega on ruum, mida me praegu n\u00e4eme, miljardeid kordi suurem kui siis, kui universum oli veel v\u00e4ga noor. Ka galaktikad liiguvad \u00fcksteisest kaugemale, kuna nende vaheline ruum laieneb.<\/p>","protected":false},"excerpt":{"rendered":"

The Universe is everything we can touch, feel, sense, measure or detect. It includes living things, planets, stars, galaxies, dust clouds, light, and even time. Before the birth of 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\/2010\/06\/the_massive_compact_star_cluster_in_ngc_3603_and_its_surroundings2\/18245403-2-eng-GB\/The_massive_compact_star_cluster_in_NGC_3603_and_its_surroundings.jpg","esa_banner_description":"","esa_banner_credit":"NASA\/ESA\/Hubble Heritage (STScI\/AURA)-ESA\/Hubble Collaboration","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2010\/06\/The_massive_compact_star_cluster_in_NGC_3603_and_its_surroundings2","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":[10,11,19],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-197","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-story-of-the-universe","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/197","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=197"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/197\/revisions"}],"predecessor-version":[{"id":1340,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/posts\/197\/revisions\/1340"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/media?parent=197"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/categories?post=197"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/tags?post=197"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/panel?post=197"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/language?post=197"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/age?post=197"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/duration?post=197"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/resource_type?post=197"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/audience?post=197"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/et\/wp-json\/wp\/v2\/wf_post_folders?post=197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}