{"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\/nb\/esa_s_mars_express_finds_more_underground_water\/","title":{"rendered":"ESAs Mars Express finner mer grunnvann"},"content":{"rendered":"<div class=\"lede\">\n<p>ESAs romfart\u00f8y \u00abMars Express\u00bb har v\u00e6rt travelt opptatt med \u00e5 utforske den r\u00f8de planeten. Forskerne bak oppdraget har nettopp kommet med en spennende nyhet: De har oppdaget store mengder flytende vann!<\/p>\n<\/div>\n<p>En stor innsj\u00f8 p\u00e5 20 x 30 km, som er omtrent like stor som byen Roma, var <a href=\"https:\/\/www.esa.int\/kids\/en\/learn\/Our_Universe\/Planets_and_moons\/Liquid_water_found_on_Mars\" target=\"_blank\" rel=\"noopener\">oppdaget i 2018<\/a> under Mars\u2019 s\u00f8rpolomr\u00e5de. Disse nye unders\u00f8kelsene har avdekket ytterligere tre dammer rundt den. De ligger imidlertid alle begravd under 1,5 km is! Forskerne mener at vannet i dammene m\u00e5 v\u00e6re salt, noe som betyr at det kan forbli i flytende tilstand og ikke fryse til is i de kalde temperaturene p\u00e5 Mars.<\/p>\n<p>Mars Express g\u00e5r i bane rundt den r\u00f8de planeten. For \u00e5 gj\u00f8re dette funnet brukte den et spesielt instrument kalt MARSIS, som er en forkortelse for \u201cMars Advanced Radar for Subsurface and Ionosphere Sounding\u201d. MARSIS er en \u00abjordgjennomtrengende radar\u00bb, noe som betyr at den sender radarimpulser fra bane mot Mars\u2019 overflate. Ved \u00e5 m\u00e5le hvor lang tid det tar f\u00f8r pulser reflekteres tilbake, og hvor sterke de er, kan forskerne finne ut hvordan det ser ut under overflaten.<\/p>\n<figure class=\"wp-block-embed is-type-video\"><iframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/Am0yFQJIGOs\" title=\"YouTube-videospiller\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/figure>\n<p>For lenge siden var Mars varmere og fuktigere, med vann som str\u00f8mmet over overflaten. Med tiden endret forholdene seg, og det er ikke lenger mulig for flytende vann \u00e5 forbli p\u00e5 overflaten i lengre tid. Oppdagelsen av disse dammene antyder imidlertid den spennende muligheten for at det kan finnes hele systemer av eldgamle innsj\u00f8er, millioner eller til og med milliarder av \u00e5r gamle, begravd under Mars\u2019 overflate. Kan de v\u00e6re hjem for enkle former for utenomjordisk liv? Dette er mulig, men det ville v\u00e6re sv\u00e6rt vanskelig \u00e5 utforske dem og finne ut av det med sikkerhet.<\/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>Ti ting du ikke visste om Mars: 6. Vann<\/figcaption><\/figure>\n<p>Tenk deg at du fikk i oppgave \u00e5 utvikle en robot som skal utforske disse dammene. Kan du tenke deg en m\u00e5te \u00e5 bryte gjennom isen p\u00e5 og deretter unders\u00f8ke vannet? Hva tror du at du vil finne?<\/p>\n<p><i>Interessant fakta: Teknikkene som brukes til \u00e5 analysere radardataene fra Mars Express, ligner p\u00e5 de som forskere bruker for \u00e5 unders\u00f8ke underjordiske innsj\u00f8er p\u00e5 Jorden, i Antarktis, Canada og Gr\u00f8nland.<\/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\/nb\/wp-json\/wp\/v2\/posts\/218","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=218"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/218\/revisions"}],"predecessor-version":[{"id":4360,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/218\/revisions\/4360"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=218"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=218"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=218"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=218"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=218"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=218"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=218"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=218"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=218"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=218"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}