{"id":370,"date":"2018-08-23T13:47:00","date_gmt":"2018-08-23T11:47:00","guid":{"rendered":"https:\/\/kids.esa.int\/liquid_water_found_on_mars\/"},"modified":"2026-10-08T00:27:23","modified_gmt":"2026-10-07T22:27:23","slug":"liquid_water_found_on_mars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/liquid_water_found_on_mars\/","title":{"rendered":"Der er fundet flydende vand p\u00e5 Mars!"},"content":{"rendered":"<div class=\"lede\">\n<p>ESA\u2019s rumfart\u00f8j Mars Express har gjort en fantastisk opdagelse: tegn p\u00e5 flydende vand p\u00e5 den r\u00f8de planet! Forskerne har l\u00e6nge ledt efter vand, og dette gennembrud kan vise sig at v\u00e6re meget vigtigt.<\/p>\n<\/div>\n<p>For l\u00e6nge siden var store dele af Mars\u2019 overflade d\u00e6kket af hav, floder og s\u00f8er. Det ved vi, fordi vi i dag kan se landskabstr\u00e6k som f.eks. enorme, udt\u00f8rrede floddale overalt p\u00e5 Mars. Disse er blevet fotograferet i fantastisk detalje af rumfart\u00f8jer i kredsl\u00f8b. Landingsfart\u00f8jer og rovere, der udforsker overfladen, har ogs\u00e5 fundet mineraler, der kun kan dannes i flydende vand.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"5333\" data-credit=\"Copyright Context map: NASA\/Viking; THEMIS background: NASA\/JPL-Caltech\/Arizona State University; MARSIS data: ESA\/NASA\/JPL\/ASI\/Univ. Rome; R. Orosei et al 2018\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/08\/Mars_Express_detects_water_buried_under_the_south_pole_of_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\/2018\/08\/mars_express_detects_water_buried_under_the_south_pole_of_mars\/18250213-2-eng-GB\/Mars_Express_detects_water_buried_under_the_south_pole_of_Mars.jpg\" alt=\"Mars Express detects water buried under the south pole of Mars\"><figcaption>Mars Express opdager vand begravet under Mars\u2019 sydpol<\/figcaption><\/figure>\n<p>Men alt dette vand var ikke bestemt til at vare ved. Klimaet p\u00e5 Mars \u00e6ndrede sig, og \u2013 selvom Mars Express tidligere har p\u00e5vist, at der findes frosset vand ved planetens poler \u2013 kan der i dag ikke findes flydende vand p\u00e5 overfladen. Derfor besluttede forskerne at kigge under jorden! De benyttede Mars Express\u2019 specielle MARSIS (<b>M<\/b>ars <b>A<\/b>avanceret <b>R<\/b>adar til <b>S<\/b>under overfladen og <b>I<\/b>onosf\u00e6ren <b>S<\/b>(lyd)instrument. MARSIS er en \u201cjordgennemtr\u00e6ngende radar\u201d. Det betyder, at den sender radarimpulser fra kredsl\u00f8b mod Mars\u2019 overflade. Ved at m\u00e5le, hvor lang tid det tager for impulserne at blive reflekteret tilbage, og hvor st\u00e6rke de er, kan forskerne finde ud af, hvordan det ser ud under jordoverfladen. Smart!<\/p>\n<p>En unders\u00f8gelse ved hj\u00e6lp af MARSIS har fundet det, som forskerne har ledt efter. Mars\u2019 sydpolomr\u00e5de best\u00e5r af mange lag af is og st\u00f8v ned til en dybde p\u00e5 omkring 1,5 km i det unders\u00f8gte omr\u00e5de, der er 200 km bredt. Under disse lagdelte aflejringer blev der fundet en s\u00e6rlig lys radarrefleksion, der var 20 km bred. Forskerne mener, at der er tale om en stor s\u00f8 med flydende vand!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"1920\" data-credit=\"ESA\/DLR\/FU Berlin, CC BY-SA 3.0 IGO\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/08\/Perspective_view_of_Libya_Montes\" data-licence=\"CC BY-SA 3.0 IGO or 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\/08\/perspective_view_of_libya_montes\/17894240-2-eng-GB\/Perspective_view_of_Libya_Montes.jpg\" alt=\"Perspective view of Libya Montes\"><figcaption>Perspektivbillede af Libya Montes<\/figcaption><\/figure>\n<p>Nogle former for mikrobielt liv p\u00e5 Jorden lever i vandlommer, hvor forholdene er s\u00e5 ekstreme, at mennesker ikke ville kunne overleve, s\u00e5 et stort sp\u00f8rgsm\u00e5l er, om der sv\u00f8mmer sm\u00e5 v\u00e6sener rundt i dette vand p\u00e5 Mars? Der kunne meget vel v\u00e6re mange flere damme og s\u00f8er under Mars\u2019 overflade, som bare venter p\u00e5 at blive opdaget. Hvilke hemmeligheder rummer de?<\/p>\n<p>Dmitri Titov, ESA\u2019s projektforsker for Mars Express, udtrykker det bedst: \u201cDenne sp\u00e6ndende opdagelse er et h\u00f8jdepunkt inden for planetforskningen og vil bidrage til vores forst\u00e5else af Mars\u201d udvikling, vandets historie p\u00e5 vores naboplanet og dens beboelighed.\u00ab<\/p>\n<p>Har du lyst til at udforske underjordiske s\u00f8er p\u00e5 Mars? Hvad tror du, vi m\u00e5ske vil finde der?<\/p>\n<p><b>Sjovt faktum:<\/b> Mars Express har kredset om den r\u00f8de planet i 15 \u00e5r!<\/p>","protected":false},"excerpt":{"rendered":"<p>ESA\u2019s Mars Express spacecraft has made an amazing discovery: signs of liquid water on the Red Planet! Scientists have been searching for water for a long time, and this breakthrough [&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\/08\/mars_express\/17883547-2-eng-GB\/Mars_Express.jpg","esa_banner_description":"Mars Express","esa_banner_credit":"ESA\/ATG medialab; Mars: ESA\/DLR\/FU Berlin, CC BY-SA 3.0 IGO","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\/08\/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-370","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\/da\/wp-json\/wp\/v2\/posts\/370","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=370"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/370\/revisions"}],"predecessor-version":[{"id":4418,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/370\/revisions\/4418"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=370"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=370"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=370"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=370"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=370"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=370"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=370"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=370"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=370"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}