{"id":293,"date":"2019-04-29T08:23:41","date_gmt":"2019-04-29T06:23:41","guid":{"rendered":"https:\/\/kids.esa.int\/esa_satellite_tracks_down_methane_on_mars\/"},"modified":"2026-10-08T00:26:30","modified_gmt":"2026-10-07T22:26:30","slug":"esa_satellite_tracks_down_methane_on_mars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/fi\/esa_satellite_tracks_down_methane_on_mars\/","title":{"rendered":"ESAn satelliitti havaitsee metaania Marsissa"},"content":{"rendered":"<div class=\"lede\">\n<p>15. kes\u00e4kuuta 2013 NASA:n Curiosity-m\u00f6nkij\u00e4 oli kiireisesti tutkimassa Marsin pintaa. Sen anturit havaitsivat jotain, mik\u00e4 sai sen operaattorit Maassa hyvin innostumaan: metaaniksi kutsutun kaasun. Maapallolla on paljon metaania. Sit\u00e4 voi synty\u00e4 geologisissa prosesseissa sek\u00e4 el\u00e4vien olentojen toimesta.\u00a0<\/p>\n<\/div>\n<p>Tieteess\u00e4 p\u00e4tee s\u00e4\u00e4nt\u00f6, ett\u00e4 mit\u00e4 enemm\u00e4n tietoa jostakin asiasta ker\u00e4t\u00e4\u00e4n, sit\u00e4 parempia tutkimustuloksia saadaan. Siksi joukko tutkijoita on tutkinut ESA:n Mars Express -satelliitin ker\u00e4\u00e4mi\u00e4 tietoja; satelliitti kierteli Marsia samaan aikaan. He ovat nyt havainneet, ett\u00e4 my\u00f6s Mars Express havaitsi metaania!\u00a0<\/p>\n<p>Mist\u00e4 siis Marsin metaani on voinut synty\u00e4? Metaani hajoaa eritt\u00e4in nopeasti, kun se altistuu edes Marsin ohuelle ilmakeh\u00e4lle, mik\u00e4 tarkoittaa, ett\u00e4 Curiosityn ja Mars Expressin havaitseman kaasun on t\u00e4ytynyt synty\u00e4 tai vapautua aivan \u00e4skett\u00e4in. Yksi teoria on, ett\u00e4 metaani syntyi miljoonia tai jopa miljardeja vuosia sitten. Se on saattanut olla vangittuna maan alla koko t\u00e4m\u00e4n ajan, kunnes se lopulta p\u00e4\u00e4si pinnalle, miss\u00e4 robottitutkimusaluksemme havaitsivat sen.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"5333\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/04\/Comparing_the_atmospheres_of_Mars_and_Earth\" 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\/2018\/04\/comparing_the_atmospheres_of_mars_and_earth\/17444033-1-eng-GB\/Comparing_the_atmospheres_of_Mars_and_Earth.jpg\" alt=\"Comparing the atmospheres of Mars and Earth\"><figcaption>Marsin ja Maan ilmakeh\u00e4n vertailu<\/figcaption><\/figure>\n<p>Toinen ajatus on, ett\u00e4 metaani olisi voinut synty\u00e4 Marsissa el\u00e4vien pienien eli\u00f6iden toimesta, jotka tuottavat metaania j\u00e4tetuotteena. T\u00e4m\u00e4 on j\u00e4nnitt\u00e4v\u00e4 mahdollisuus, mutta ennen kuin voimme tehd\u00e4 t\u00e4llaisen johtop\u00e4\u00e4t\u00f6ksen, olisi ker\u00e4tt\u00e4v\u00e4 lis\u00e4\u00e4 todisteita!\u00a0<\/p>\n<p>Tutkijat pit\u00e4v\u00e4t t\u00e4ll\u00e4 hetkell\u00e4 geologisia selityksi\u00e4 todenn\u00e4k\u00f6isempin\u00e4 kuin biologisia. Metaanikaasua saattaisi vapautua kallioper\u00e4st\u00e4 eri puolilla Marsia, kerrallaan pieni\u00e4 m\u00e4\u00e4ri\u00e4. Marsissa on my\u00f6s paljon j\u00e4\u00e4t\u00e4, johon metaanikaasu voi j\u00e4\u00e4d\u00e4 loukkuun. Kun j\u00e4\u00e4 sulaa tai murtuu, kaasu saattaa p\u00e4\u00e4st\u00e4 ilmakeh\u00e4\u00e4n.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"3638\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2019\/04\/How_to_create_and_destroy_methane_at_Mars\" 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\/2019\/04\/how_to_create_and_destroy_methane_at_mars\/19329127-1-eng-GB\/How_to_create_and_destroy_methane_at_Mars.jpg\" alt=\"How to create and destroy methane at Mars\"><figcaption>Miten metaania syntyy ja hajoaa Marsissa<\/figcaption><\/figure>\n<p>T\u00e4m\u00e4n tutkimuksen seuraava vaihe on k\u00e4yd\u00e4 l\u00e4pi lis\u00e4\u00e4 Mars Expressin aineistoa ja etsi\u00e4 muita tilanteita, joissa metaania olisi voitu havaita. Lis\u00e4ksi uusi luotain, ESA:n ja Roscosmosin ExoMars Trace Gas Orbiter, kiert\u00e4\u00e4 parhaillaan Marsia tutkien sen ilmakeh\u00e4\u00e4. Kuka tiet\u00e4\u00e4, mit\u00e4 se tulee l\u00f6yt\u00e4m\u00e4\u00e4n!<\/p>\n<p><i>Mielenkiintoinen fakta: Mars Express laukaistiin vuonna 2003, ja sen matka Marsiin kesti kuusi kuukautta. Se on edelleen toiminnassa kaiken t\u00e4m\u00e4n ajan j\u00e4lkeen ja auttaa meit\u00e4 oppimaan lis\u00e4\u00e4 Punaisesta planeetasta.<\/i><\/p>","protected":false},"excerpt":{"rendered":"<p>Back on 15 June 2013, NASA\u2019s Curiosity rover was busy exploring the surface of Mars. Its sensors detected something that made its operators back on Earth very excited: a gas [&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\/2018\/04\/mars_express\/17447281-1-eng-GB\/Mars_Express.jpg","esa_banner_description":"Mars Express","esa_banner_credit":"Spacecraft image credit: ESA\/ATG medialab; Mars: ESA\/DLR\/FU Berlin","esa_banner_licence":"CC BY-SA 3.0 IGO or ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/04\/Mars_Express","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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-293","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/293","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=293"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/293\/revisions"}],"predecessor-version":[{"id":4392,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/posts\/293\/revisions\/4392"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/media?parent=293"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/categories?post=293"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/tags?post=293"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/panel?post=293"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/language?post=293"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/age?post=293"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/duration?post=293"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/resource_type?post=293"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/audience?post=293"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/fi\/wp-json\/wp\/v2\/wf_post_folders?post=293"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}