{"id":955,"date":"2004-11-19T08:24:00","date_gmt":"2004-11-19T07:24:00","guid":{"rendered":"https:\/\/kids.esa.int\/life_beyond_earth\/"},"modified":"2026-10-08T00:34:11","modified_gmt":"2026-10-07T22:34:11","slug":"life_beyond_earth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/life_beyond_earth\/","title":{"rendered":"El\u00e4m\u00e4 Maan ulkopuolella"},"content":{"rendered":"
\n

Mars oli aikoinaan l\u00e4mpim\u00e4mpi ja kosteampi kuin nyky\u00e4\u00e4n. ESA:n Mars Express -luotaimen ja muiden avaruusluotainten l\u00e4hett\u00e4miss\u00e4 kuvissa n\u00e4kyy valtavia kanavia, jotka n\u00e4ytt\u00e4v\u00e4t kuivuneilta jokiuomilta. Minne vesi katosi?<\/p>\n<\/div>\n

Pieni osa on sitoutunut napaj\u00e4\u00e4tik\u00f6ihin. Osa on p\u00e4\u00e4ssyt avaruuteen. Suurin osa siit\u00e4 on kuitenkin j\u00e4\u00e4tynyt maaper\u00e4\u00e4n ja kallioper\u00e4\u00e4n.<\/p>\n

On mahdollista, ett\u00e4 el\u00e4m\u00e4 sai alkunsa Marsissa miljardeja vuosia sitten, kun siell\u00e4 oli l\u00e4mmin ja kosteaa. Nyky\u00e4\u00e4n Marsin pinta on liian kylm\u00e4 ja kuiva el\u00e4m\u00e4n yll\u00e4pit\u00e4miseksi. Jotkut tutkijat kuitenkin uskovat, ett\u00e4 yksinkertaista el\u00e4m\u00e4\u00e4, kuten bakteereja, saattaa edelleen esiinty\u00e4 syv\u00e4ll\u00e4 maan alla.<\/p>\n

\"Configuration
ExoMars-m\u00f6nkij\u00e4n kokoonpano<\/figcaption><\/figure>\n

Muutaman vuoden kuluttua ESA aikoo l\u00e4hett\u00e4\u00e4 Mars-m\u00f6nkij\u00e4n etsim\u00e4\u00e4n el\u00e4m\u00e4\u00e4 Marsista. T\u00e4m\u00e4n j\u00e4lkeen on tarkoitus toteuttaa tutkimusmatka, jonka tarkoituksena on tuoda kivi- ja maaper\u00e4n\u00e4ytteit\u00e4 tieteellist\u00e4 tutkimusta varten.<\/p>\n

Marsin lis\u00e4ksi el\u00e4m\u00e4\u00e4 saattaa esiinty\u00e4 j\u00e4\u00e4peitteisiss\u00e4 meriss\u00e4 joillakin Jupiterin kuilla. My\u00f6s Titan, Saturnuksen suurin kuu, on eritt\u00e4in mielenkiintoinen paikka.<\/p>\n

Tutkijat uskovat, ett\u00e4 Titan on kuin nuori Maa \u2013 vain paljon kylmempi. Tammikuussa 2005 ESAn Huygens-luotain laskeutui t\u00e4lle j\u00e4iselle, savusumun peitt\u00e4m\u00e4lle kuulle. Se l\u00f6ysi kuivia jokiuomia ja j\u00e4rvi\u00e4, jotka ovat toisinaan t\u00e4ynn\u00e4 nestem\u00e4ist\u00e4 metaania.<\/p>","protected":false},"excerpt":{"rendered":"

Mars was once warmer and wetter than it is today. Pictures sent back by ESA’s Mars Express and other spacecraft show huge channels that look like dry river beds. Where […]<\/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\/2004\/01\/reull_vallis_-_hrsc_image_15_january_20043\/17873408-2-eng-GB\/Reull_Vallis_-_HRSC_image_15_January_2004.jpg","esa_banner_description":"Reull Vallis - HRSC image 15 January 2004","esa_banner_credit":"ESA\/DLR\/FU Berlin (G. Neukum)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/01\/Reull_Vallis_-_HRSC_image_15_January_20043","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-955","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\/955","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=955"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/955\/revisions"}],"predecessor-version":[{"id":4754,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/955\/revisions\/4754"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=955"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=955"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=955"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=955"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=955"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=955"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=955"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=955"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=955"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=955"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}