{"id":900,"date":"2008-12-15T09:35:00","date_gmt":"2008-12-15T08:35:00","guid":{"rendered":"https:\/\/kids.esa.int\/life_on_extrasolar_planets\/"},"modified":"2026-10-08T00:33:33","modified_gmt":"2026-10-07T22:33:33","slug":"life_on_extrasolar_planets","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/et\/life_on_extrasolar_planets\/","title":{"rendered":"Elu P\u00e4ikeses\u00fcsteemiv\u00e4listel planeetidel"},"content":{"rendered":"<div class=\"lede\">\n<p>2008. aastal avastas NASA\/ESA Hubble\u2019i kosmoseteleskoop s\u00fcsinikdioksiidi teise t\u00e4he \u00fcmber tiirleva Jupiteri suurusega planeedi atmosf\u00e4\u00e4ris. Seda peeti oluliseks sammuks elu j\u00e4lgede otsimisel teistel planeetidel.<\/p>\n<\/div>\n<p>Siiani on avastatud umbes 300 planeeti, mis tiirlevad kaugete t\u00e4htede \u00fcmber. Kahjuks on need t\u00e4htedev\u00e4lised planeedid nii n\u00f5rgalt paistvad ja nii kaugel, et nende uurimine on \u00e4\u00e4rmiselt keeruline. T\u00e4nu kaasaegsetele seadmetele hakkavad teadlased siiski j\u00e4rk-j\u00e4rgult rohkem teada saama nendest v\u00f5\u00f5rastest maailmadest ja gaasidest, millest koosnevad nende atmosf\u00e4\u00e4rid.<\/p>\n<p>S\u00fcsinikdioksiid on gaas, mida taimed \u00f6\u00f6sel eritavad ja mida nad kasvu jaoks kasutavad. Loomad ja inimesed hingavad seda v\u00e4lja iga paari sekundi j\u00e4rel. \u00dche peamise kasvuhoonegaasina hoiab see soojust kinni ja aitab planeeti soojendada. S\u00fcsinik on ka nn orgaaniliste \u00fchendite aluseks, mis kuuluvad elu ehituskivide hulka. N\u00fc\u00fcd on Hubble n\u00e4idanud, et suudame kaugetel planeetidel s\u00fcsinikdioksiidi avastada ja hinnata, kui palju seda seal leidub. See on suur edasiminek pikaajalistes p\u00fc\u00fcdlustes selgitada v\u00e4lja, millest need maailmad koosnevad ja kas neil v\u00f5iks elu eksisteerida.<\/p>\n<p>Planeet, mida nimetatakse HD 189733b, on eluks liiga kuum. Siiski on see hea vaatlusobjekt, kuna see kaob oma kaaslase t\u00e4he taha iga 2,2 p\u00e4eva tagant. Uurides Maale j\u00f5udva valguse regulaarseid muutusi, saavad teadlased anal\u00fc\u00fcsida planeedi atmosf\u00e4\u00e4ri. Veevapor ja metaan on juba avastatud. Uued Hubble\u2019i vaatlused t\u00f5estavad, et teiste t\u00e4htede \u00fcmber tiirlevatel planeetidel on v\u00f5imalik m\u00f5\u00f5ta eluks vajalikke p\u00f5hilisi keemilisi \u00fchendeid.<\/p>","protected":false},"excerpt":{"rendered":"<p>In 2008, the NASA\/ESA Hubble Space Telescope discovered carbon dioxide in the atmosphere of a Jupiter-sized planet orbiting another star. This was seen as an important step in the search [&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\/2008\/12\/hd_189733b2\/18246735-2-eng-GB\/HD_189733b.jpg","esa_banner_description":"HD 189733b","esa_banner_credit":"ESA, NASA, M. 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