{"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\/da\/the_mystery_of_martian_methane\/","title":{"rendered":"Mysteriet om metan p\u00e5 Mars"},"content":{"rendered":"
\n

Er der liv p\u00e5 Mars? Ingen forventer naturligvis at finde intelligente marsboere, som dem man ser i filmen \u2018War of the Worlds\u2019. Resultater fra ESA\u2019s Mars Express-rumsonde og jordbaserede observatorier tyder dog p\u00e5, at der kunne gemme sig enkle livsformer under jorden p\u00e5 den r\u00f8de planet.<\/p>\n<\/div>\n

N\u00f8glen til mysteriet er metan, en gas, der p\u00e5 Jorden bruges til madlavning og opvarmning. En stor del af metanet i vores atmosf\u00e6re udledes af avancerede livsformer, s\u00e5som kv\u00e6g, der ford\u00f8jer f\u00f8de. Der findes dog ogs\u00e5 andre m\u00e5der at producere metan p\u00e5, f.eks. gennem vulkansk aktivitet.<\/p>\n

Metan blev opdaget p\u00e5 Mars i 2003. Da gassen let nedbrydes, forventedes dens levetid i Mars\u2019 atmosf\u00e6re at v\u00e6re omkring 300 \u00e5r. En mere detaljeret analyse viste, at metanen faktisk var koncentreret i tre regioner. Dette tydede p\u00e5, at den blev frigivet lige nu, og at vi opfangede den, f\u00f8r den havde n\u00e5et at sprede sig rundt om planeten.<\/p>\n

S\u00e5 kom Mars med endnu en overraskelse. I stedet for at det skulle tage 300 \u00e5r at forsvinde, var metanet n\u00e6sten helt forsvundet i begyndelsen af 2006. Noget fjernede det fra atmosf\u00e6ren 600 gange hurtigere end forventet. ESA-forskerne formoder, at planetens overflade kan v\u00e6re \u00e5rsagen. Enten bliver metanet fanget i st\u00f8vet, eller ogs\u00e5 \u00f8del\u00e6gger st\u00e6rkt reaktive kemikalier s\u00e5som hydrogenperoxid det. Dette kan betyde, at overfladen er langt mere uegnet til liv end tidligere antaget. Hvis det er tilf\u00e6ldet, bliver fremtidige opdagelsesrejsende n\u00f8dt til at bore dybt ned under jorden for at lede efter tegn p\u00e5 tidligere eller nuv\u00e6rende 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\/da\/wp-json\/wp\/v2\/posts\/1084","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=1084"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1084\/revisions"}],"predecessor-version":[{"id":2227,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1084\/revisions\/2227"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=1084"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=1084"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=1084"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=1084"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=1084"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=1084"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=1084"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=1084"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=1084"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=1084"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}