{"id":218,"date":"2021-03-22T11:41:45","date_gmt":"2021-03-22T10:41:45","guid":{"rendered":"https:\/\/kids.esa.int\/esa_s_mars_express_finds_more_underground_water\/"},"modified":"2026-10-08T00:25:38","modified_gmt":"2026-10-07T22:25:38","slug":"esa_s_mars_express_finds_more_underground_water","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/esa_s_mars_express_finds_more_underground_water\/","title":{"rendered":"ESA:s Mars Express uppt\u00e4cker ytterligare underjordiskt vatten"},"content":{"rendered":"<div class=\"lede\">\n<p>ESA:s rymdsond Mars Express har varit flitigt sysselsatt med att utforska den r\u00f6da planeten. Forskarna bakom uppdraget har just kommit med ett sp\u00e4nnande besked: de har uppt\u00e4ckt stora m\u00e4ngder flytande vatten!<\/p>\n<\/div>\n<p>En stor sj\u00f6, 20 x 30 km, som \u00e4r ungef\u00e4r lika stor som staden Rom, var <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/Planets_and_moons\/Liquid_water_found_on_Mars\" target=\"_blank\" rel=\"noopener\">grundades 2018<\/a> under Mars sydpol. Dessa nya unders\u00f6kningar har avsl\u00f6jat ytterligare tre sj\u00f6ar som omger den. De \u00e4r dock alla begravda under 1,5 km is! Forskarna tror att vattnet i sj\u00f6arna m\u00e5ste vara salt, vilket inneb\u00e4r att det kan f\u00f6rbli i flytande tillst\u00e5nd och inte frysa till is trots de l\u00e5ga temperaturerna p\u00e5 Mars.<\/p>\n<p>Mars Express befinner sig i omloppsbana runt den r\u00f6da planeten. F\u00f6r att g\u00f6ra denna uppt\u00e4ckt anv\u00e4nde den en speciell apparat som kallas MARSIS, vilket \u00e4r en f\u00f6rkortning av \u201cMars Advanced Radar for Subsurface and Ionosphere Sounding\u201d. MARSIS \u00e4r en \u201dmarkpenetrerande radar\u201d, vilket inneb\u00e4r att den s\u00e4nder ut radarimpulser fr\u00e5n omloppsbanan mot Mars yta. Genom att m\u00e4ta hur l\u00e5ng tid det tar f\u00f6r impulserna att reflekteras tillbaka och hur starka de \u00e4r kan forskarna ta reda p\u00e5 hur det ser ut under markytan.<\/p>\n<figure class=\"wp-block-embed is-type-video\"><iframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Am0yFQJIGOs\" title=\"YouTube-videospelare\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/figure>\n<p>F\u00f6r l\u00e4nge sedan var Mars varmare och fuktigare, och vatten fl\u00f6dade \u00f6ver ytan. Med tiden f\u00f6r\u00e4ndrades f\u00f6rh\u00e5llandena, och det \u00e4r numera inte l\u00e4ngre m\u00f6jligt f\u00f6r flytande vatten att finnas kvar p\u00e5 ytan under l\u00e4ngre tid. Uppt\u00e4ckten av dessa dammar antyder dock den sp\u00e4nnande m\u00f6jligheten att det kan finnas hela system av ur\u00e5ldriga sj\u00f6ar, miljoner eller till och med miljarder \u00e5r gamla, begravda under Mars yta. Kan de vara hem f\u00f6r enkla former av utomjordiskt liv? Det \u00e4r m\u00f6jligt, men det skulle vara mycket sv\u00e5rt att utforska dem och ta reda p\u00e5 det med s\u00e4kerhet.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"8000\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2019\/05\/Ten_things_you_did_not_know_about_Mars_6._Water\" 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\/05\/ten_things_you_did_not_know_about_mars_6._water\/19409834-7-eng-GB\/Ten_things_you_did_not_know_about_Mars_6._Water.png\" alt=\"Ten things you did not know about Mars: 6. Water\"><figcaption>Tio saker du inte visste om Mars: 6. Vatten<\/figcaption><\/figure>\n<p>T\u00e4nk dig att du fick i uppdrag att konstruera en robot som ska utforska dessa dammar. Kan du komma p\u00e5 n\u00e5got s\u00e4tt att bryta igenom isen och sedan unders\u00f6ka vattnet? Vad tror du att du skulle kunna hitta?<\/p>\n<p><i>Intressant fakta: De metoder som anv\u00e4nds f\u00f6r att analysera radardata fr\u00e5n Mars Express liknar dem som forskare anv\u00e4nder f\u00f6r att unders\u00f6ka underjordiska sj\u00f6ar p\u00e5 jorden, i Antarktis, Kanada och Gr\u00f6nland.<\/i><\/p>\n<p><i>\u00a0<\/i><\/p>","protected":false},"excerpt":{"rendered":"<p>ESA\u2019s Mars Express spacecraft has been busy exploring the red planet. Mission scientists have just made an exciting announcement: they have discovered lots of liquid water! A large lake of [&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\/2003\/04\/artist_s_impression_of_water_under_the_martian_surface\/9968426-2-eng-GB\/Artist_s_impression_of_water_under_the_martian_surface.jpg","esa_banner_description":"Artist\u2019s impression of water under the martian surface","esa_banner_credit":"Illustration by Medialab, ESA 2001","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/04\/Artist_s_impression_of_water_under_the_martian_surface","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-218","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\/sv\/wp-json\/wp\/v2\/posts\/218","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=218"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/218\/revisions"}],"predecessor-version":[{"id":4360,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/218\/revisions\/4360"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=218"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=218"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=218"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=218"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=218"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=218"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=218"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=218"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=218"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}