{"id":1142,"date":"2004-11-19T08:27:00","date_gmt":"2004-11-19T07:27:00","guid":{"rendered":"https:\/\/kids.esa.int\/are_we_alone_life_on_earth\/"},"modified":"2026-10-08T00:36:29","modified_gmt":"2026-10-07T22:36:29","slug":"are_we_alone_life_on_earth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/are_we_alone_life_on_earth\/","title":{"rendered":"Livet p\u00e5 jorden"},"content":{"rendered":"<div class=\"lede\">\n<p>Ingen vet hvordan eller hvorfor livet oppsto. Vi vet imidlertid at livet p\u00e5 Jorden oppsto for minst 3,8 milliarder (3 800 000 000) \u00e5r siden. P\u00e5 dette tidspunktet hadde den unge planeten avkj\u00f8lt seg og dannet en steinaktig jordskorpe. Noen forskere mener at livet oppsto i en steinbasseng eller i havet. Andre tror det kan ha kommet fra verdensrommet med kometer og asteroider.<\/p>\n<\/div>\n<p>S\u00e5 vidt vi vet, er Jorden det eneste stedet hvor det finnes liv. Uansett hvor vi ser p\u00e5 planeten v\u00e5r, har bakterier og andre enkle livsformer sl\u00e5tt seg ned.<\/p>\n<p>Planter og dyr trenger sollys for \u00e5 vokse. Frem til 1970-\u00e5rene trodde forskerne at liv bare fantes n\u00e6r jordoverflaten.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/12\/Mars_from_5.5_million_km_taken_1_December3\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2003\/12\/mars_from_5.5_million_km_taken_1_december3\/17899273-2-eng-GB\/Mars_from_5.5_million_km_taken_1_December.jpg\" alt=\"Mars from 5.5 million km, taken 1 December\"><figcaption>Mars fra 5,5 millioner km, tatt 1. desember<\/figcaption><\/figure>\n<p>Siden den gang har man oppdaget bakterier flere kilometer under bakken, inne i fast bergart. De lever av gasser og mineraler i bergarten. Man har ogs\u00e5 funnet bakterier i sterke syrer, i den iskalde kulden i Antarktis og i n\u00e6rheten av varme kilder i havets m\u00f8rke dyp. Noen kan til og med overleve p\u00e5 sv\u00e6rt radioaktive steder. S\u00e5 lenge det finnes vann, kan livet f\u00e5 fotfeste.<\/p>\n<p>Hvis livet er s\u00e5 krevende, kan det da oppst\u00e5 og overleve p\u00e5 andre planeter? Det mest sannsynlige stedet i solsystemet v\u00e5rt er Mars.<\/p>","protected":false},"excerpt":{"rendered":"<p>No one knows how or why life began. We do know that life on Earth started at least 3.8 billion (3 800 000 000) years ago. By this time, the [&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\/2001\/07\/life_in_extreme_conditions_on_earth_raises_hopes_for_life_elsewhere_in_the_universe2\/17864454-3-eng-GB\/Life_in_extreme_conditions_on_Earth_raises_hopes_for_life_elsewhere_in_the_universe.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2001\/07\/Life_in_extreme_conditions_on_Earth_raises_hopes_for_life_elsewhere_in_the_universe2","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-1142","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\/nb\/wp-json\/wp\/v2\/posts\/1142","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/comments?post=1142"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/1142\/revisions"}],"predecessor-version":[{"id":4868,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/1142\/revisions\/4868"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=1142"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=1142"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=1142"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=1142"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=1142"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=1142"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=1142"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=1142"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=1142"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=1142"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}