{"id":1084,"date":"2009-08-21T09:40:00","date_gmt":"2009-08-21T07:40:00","guid":{"rendered":"https:\/\/kids.esa.int\/the_mystery_of_martian_methane\/"},"modified":"2026-10-08T00:35:50","modified_gmt":"2026-10-07T22:35:50","slug":"the_mystery_of_martian_methane","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/the_mystery_of_martian_methane\/","title":{"rendered":"Mysteriet kring metan p\u00e5 Mars"},"content":{"rendered":"
\n

Finns det liv p\u00e5 Mars? Ingen f\u00f6rv\u00e4ntar sig f\u00f6rst\u00e5s att hitta intelligenta marsianer, som de man ser i filmen \u2018War of the Worlds\u2019. Resultaten fr\u00e5n ESA:s rymdsond Mars Express och markbaserade observatorier tyder dock p\u00e5 att enkla livsformer kan g\u00f6mma sig under jordytan p\u00e5 den r\u00f6da planeten.<\/p>\n<\/div>\n

Nyckeln till mysteriet \u00e4r metan, en gas som p\u00e5 jorden anv\u00e4nds f\u00f6r matlagning och uppv\u00e4rmning. En stor del av metanet i v\u00e5r atmosf\u00e4r frig\u00f6rs av avancerade livsformer, till exempel n\u00f6tkreatur som sm\u00e4lter maten. Det finns dock andra s\u00e4tt att producera metan, till exempel genom vulkanisk aktivitet.<\/p>\n

Metan uppt\u00e4cktes p\u00e5 Mars \u00e5r 2003. Eftersom gasen bryts ned l\u00e4tt f\u00f6rv\u00e4ntades dess livsl\u00e4ngd i Mars atmosf\u00e4r vara omkring 300 \u00e5r. En mer detaljerad analys visade att metanet i sj\u00e4lva verket var koncentrerat till tre regioner. Detta visade att det sl\u00e4pptes ut just nu, och att vi uppt\u00e4ckte det innan det hunnit spridas \u00f6ver hela planeten.<\/p>\n

D\u00e5 bj\u00f6d Mars p\u00e5 \u00e4nnu en \u00f6verraskning. Ist\u00e4llet f\u00f6r att det skulle ta 300 \u00e5r att f\u00f6rsvinna hade metanet n\u00e4stan helt f\u00f6rsvunnit redan i b\u00f6rjan av 2006. N\u00e5got tog bort det fr\u00e5n atmosf\u00e4ren 600 g\u00e5nger snabbare \u00e4n v\u00e4ntat. ESA:s forskare misst\u00e4nker att planetens yta kan vara orsaken. Antingen fastnar metanet i dammet eller s\u00e5 bryts det ned av mycket reaktiva kemikalier som v\u00e4teperoxid. Detta kan inneb\u00e4ra att ytan \u00e4r mycket mer livsfientlig \u00e4n man tidigare trott. Om s\u00e5 \u00e4r fallet kommer framtida utforskare att beh\u00f6va borra djupt under jordytan f\u00f6r att leta efter tecken p\u00e5 tidigare eller nuvarande liv.<\/p>","protected":false},"excerpt":{"rendered":"

Is there life on Mars? Certainly, no one expects to find intelligent Martians, like those seen in the movie, ‘War of the Worlds’. However, results from ESA\u2019s Mars Express orbiter […]<\/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\/mars_express6\/17874075-2-eng-GB\/Mars_Express.jpg","esa_banner_description":"Mars Express","esa_banner_credit":"Alex Lutkus","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2008\/12\/Mars_Express6","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":[10,11,12],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1084","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1084","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/comments?post=1084"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1084\/revisions"}],"predecessor-version":[{"id":2227,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1084\/revisions\/2227"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=1084"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=1084"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=1084"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=1084"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=1084"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=1084"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=1084"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=1084"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=1084"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=1084"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}