{"id":264,"date":"2004-11-19T08:17:00","date_gmt":"2004-11-19T07:17:00","guid":{"rendered":"https:\/\/kids.esa.int\/life_around_other_stars\/"},"modified":"2026-10-08T00:26:11","modified_gmt":"2026-10-07T22:26:11","slug":"life_around_other_stars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/life_around_other_stars\/","title":{"rendered":"El\u00e4m\u00e4 muiden t\u00e4htien ymp\u00e4rill\u00e4"},"content":{"rendered":"<div class=\"lede\">\n<p>Voisiko muiden t\u00e4htien ymp\u00e4rill\u00e4 olla el\u00e4m\u00e4\u00e4? <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/Stars_and_galaxies\/Stars\" target=\"_blank\" rel=\"noopener\">t\u00e4hdet<\/a>? Ehk\u00e4 el\u00e4minen <a href=\"http:\/\/www.esa.int\/kids\/en\/learn\/Life_in_Space\/Are_we_alone\/Exoplanets\" target=\"_blank\" rel=\"noopener\">aurinkokunnan ulkopuoliset planeetat<\/a>! Mutta mist\u00e4 n\u00e4m\u00e4 planeetat ovat per\u00e4isin?<\/p>\n<p>Aivan kuten planeetat meid\u00e4n <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/Planets_and_moons\/The_Solar_System_and_its_planets\" target=\"_blank\" rel=\"noopener\">Aurinkokunta<\/a>, eksoplaneetat muodostuvat kaasu- ja p\u00f6lypilvist\u00e4, jotka ovat j\u00e4\u00e4neet j\u00e4ljelle siit\u00e4 ajasta, kun niiden <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/Stars_and_galaxies\/Star_birth\" target=\"_blank\" rel=\"noopener\">t\u00e4htien synty<\/a>. Uudet t\u00e4hdet l\u00e4hett\u00e4v\u00e4t avaruuteen paineaaltoja, jotka saavat t\u00e4m\u00e4n j\u00e4ljelle j\u00e4\u00e4neen aineen yhdistym\u00e4\u00e4n, ja ajan my\u00f6t\u00e4 siit\u00e4 muodostuu planeettoja.<\/p>\n<\/div>\n<p>Uskomatonta, mutta meill\u00e4 on kuvia eksoplaneettaj\u00e4rjestelmien syntymisest\u00e4! N\u00e4m\u00e4 <a href=\"http:\/\/www.esa.int\/kids\/en\/learn\/Technology\/Spacecraft\/The_Hubble_Space_Telescope\" target=\"_blank\" rel=\"noopener\">NASA:n ja ESA:n Hubble-avaruusteleskooppi<\/a> sit\u00e4 k\u00e4ytettiin Orionin sumun tutkimiseen, ja sen avulla l\u00f6ydettiin ilmi\u00f6, jota tutkijat kutsuvat protoplanetaarisiksi kiekoiksi. N\u00e4m\u00e4 ovat todenn\u00e4k\u00f6isesti syntym\u00e4ss\u00e4 olevia hyvin nuoria aurinkokuntia! Ehk\u00e4p\u00e4 niist\u00e4 syntyy jonain p\u00e4iv\u00e4n\u00e4 planeettoja, jotka ovat lopulta juuri sopivia el\u00e4m\u00e4n kehittymiselle.<\/p>\n<p>Sen lis\u00e4ksi, ett\u00e4 tutkijat ovat havainneet kehittyvi\u00e4 aurinkokuntia, he ovat jo l\u00f6yt\u00e4neet tuhansia t\u00e4ysin kehittyneit\u00e4 aurinkokunnan ulkopuolisia planeettoja ja l\u00f6yt\u00e4v\u00e4t niit\u00e4 edelleen! Monia n\u00e4ist\u00e4 planeetoista kutsutaan \u201ckuumiksi Jupiteriksi\u201d, koska ne ovat suuria ja niiden massa on suuri (kuten <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/Planets_and_moons\/Jupiter\" target=\"_blank\" rel=\"noopener\">Jupiter<\/a> (omassa aurinkokunnassamme), mutta ne kiert\u00e4v\u00e4t my\u00f6s hyvin l\u00e4hell\u00e4 t\u00e4hti\u00e4\u00e4n. T\u00e4m\u00e4n vuoksi ne eiv\u00e4t todenn\u00e4k\u00f6isesti sovellu el\u00e4m\u00e4lle sellaisena kuin me sen tunnemme, mutta kun eksoplaneettojen l\u00f6yt\u00e4miseen k\u00e4ytett\u00e4v\u00e4t menetelm\u00e4mme kehittyv\u00e4t, havaitsemme nyt my\u00f6s merkkej\u00e4 yh\u00e4 useammista maankaltaisista planeetoista avaruudessa.<\/p>\n<p>T\u00e4htien kiertoradalla ei ole vain planeettoja. My\u00f6s muut avaruuden kohteet, kuten <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/Comets_and_meteors\/Asteroids_the_minor_planets\" target=\"_blank\" rel=\"noopener\">asteroidit<\/a> ja <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/Comets_and_meteors\/Comets\" target=\"_blank\" rel=\"noopener\">komeetat<\/a>, samoin. Voisiko niill\u00e4 olla el\u00e4m\u00e4\u00e4? Se on ep\u00e4todenn\u00e4k\u00f6isemp\u00e4\u00e4, mutta mahdollisuus on olemassa. Jotkut tutkijat pit\u00e4v\u00e4t mahdollisena, ett\u00e4 pienet mikrobit voisivat kulkeutua planeetalta toiselle asteroidien kivenpalojen mukana tai jopa komeettojen kyydiss\u00e4 valtavien avaruusalueiden yli! Emme voi olla varmoja, mutta ajatus on mielenkiintoinen.<\/p>\n<p>Mit\u00e4 mielt\u00e4 olet? Onko muiden t\u00e4htien ymp\u00e4rill\u00e4 el\u00e4m\u00e4\u00e4? Jos on, l\u00f6yd\u00e4mmek\u00f6 sen koskaan?<\/p>","protected":false},"excerpt":{"rendered":"<p>Could there be life around other stars? Perhaps, living on extrasolar planets! But where do these planets come from? Like the planets in our Solar System, exoplanets form from clouds [&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\/2019\/10\/lonely_hearts_club\/21126615-1-eng-GB\/Lonely_hearts_club.jpg","esa_banner_description":"There are billions of stars in the Universe\u2026 could there be life around any of them? Copyright: ESA\/Hubble & NASA, A. Bellini et al.; CC BY 4.0","esa_banner_credit":"ESA\/Hubble & NASA, A. Bellini et al.; CC BY 4.0","esa_banner_licence":"CC BY 4.0 INT or ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2019\/10\/Lonely_hearts_club","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":[14,10,13],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-264","post","type-post","status-publish","format-standard","hentry","category-are-we-alone","category-learn","category-life-in-space","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/264","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=264"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/264\/revisions"}],"predecessor-version":[{"id":1407,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/264\/revisions\/1407"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=264"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=264"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=264"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=264"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=264"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=264"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=264"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=264"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=264"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=264"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}