{"id":371,"date":"2018-08-23T13:06:00","date_gmt":"2018-08-23T11:06:00","guid":{"rendered":"https:\/\/kids.esa.int\/de_l_eau_liquide_a_ete_trouvee_sur_mars\/"},"modified":"2026-10-08T00:27:24","modified_gmt":"2026-10-07T22:27:24","slug":"de_l_eau_liquide_a_ete_trouvee_sur_mars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/de_l_eau_liquide_a_ete_trouvee_sur_mars\/","title":{"rendered":"Der er fundet flydende vand p\u00e5 Mars!"},"content":{"rendered":"<div class=\"lede\">\n<p>Rumfart\u00f8jet Mars Express har netop gjort en utrolig opdagelse: Det har fundet tegn p\u00e5 vand i flydende form p\u00e5 den r\u00f8de planet! Mens forskerne har ledt efter vand p\u00e5 Mars i mange \u00e5r, kan denne opdagelse vise sig at v\u00e6re af afg\u00f8rende betydning.<\/p>\n<\/div>\n<p>I en fjern fortid var en stor del af Mars\u2019 overflade d\u00e6kket af oceaner, floder og s\u00f8er. Det kan vi se i dag, da Mars rummer enorme udt\u00f8rrede dale, som er blevet fotograferet utallige gange af forskellige rumfart\u00f8jer. Flere landingsfart\u00f8jer og udforskningsrovere har desuden fundet gamle mineraler der, som 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>Alligevel kunne dette vand ikke forblive i flydende tilstand for evigt. Klimaet p\u00e5 Mars \u00e6ndrede sig til sidst, og \u2013 selvom Mars Express tidligere har p\u00e5vist frosset vand ved polkapperne p\u00e5 den r\u00f8de planet \u2013 er flydende vand i dag ut\u00e6nkeligt p\u00e5 Mars\u00ab overflade. Forskerne besluttede derfor at udforske Mars\u00bb undergrund! Til dette form\u00e5l anvendte de MARSIS-instrumentet ombord p\u00e5 Mars Express, et avanceret Mars-radar, der g\u00f8r det muligt at unders\u00f8ge undergrunden og ionosf\u00e6ren p\u00e5 den r\u00f8de planet. MARSIS er en \u00bbjordgennemtr\u00e6ngende radar\u00ab, hvilket betyder, at den kan sende radarimpulser fra kredsl\u00f8bet ned til Mars\u2019 overflade. Ved at registrere varigheden og intensiteten af de b\u00f8lger, der sendes tilbage til senderen i kredsl\u00f8b, kan forskerteamene fors\u00f8ge at forst\u00e5, hvad der befinder sig under overfladen. Det er ret genialt!<\/p>\n<p>En unders\u00f8gelse baseret p\u00e5 data indsamlet af MARSIS har f\u00f8rt til en opdagelse, man l\u00e6nge har h\u00e5bet p\u00e5. Den sydlige polkappe p\u00e5 Mars best\u00e5r af adskillige lag af is og st\u00f8v med en dybde p\u00e5 1,5 km over et omr\u00e5de, der str\u00e6kker sig ca. 200 km i l\u00e6ngden. En s\u00e6rligt lysst\u00e6rk radarrefleksion, der str\u00e6kker sig over ca. 20 km, har vakt forskernes opm\u00e6rksomhed under disse aflejringslag. De mener, at der kunne v\u00e6re 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>P\u00e5 Jorden lever visse former for mikrobielt liv i vandlommer, hvor forholdene er uegnede for menneskeligt liv. Kunne der leve mikroskopiske v\u00e6sener i dette vand p\u00e5 Mars? Mars rummer sandsynligvis andre s\u00f8er og vandomr\u00e5der under overfladen. Hvilke hemmeligheder gemmer de mon p\u00e5?<\/p>\n<p>If\u00f8lge Dmitri Titov, en af forskerne bag Mars Express-projektet: \u00abDenne fascinerende opdagelse er et historisk videnskabeligt gennembrud, der vil hj\u00e6lpe os med at forst\u00e5 Mars\u00bb udvikling, men ogs\u00e5 vandets historie p\u00e5 denne planet og dens potentielle beboelighed.\u00ab<\/p>\n<p>Vil I gerne udforske Mars\u2019 undergrund? Hvad tror I, vi kunne finde dernede?<\/p>\n<p><b>Vidste du det?<\/b> Mars Express har kredset om Den R\u00f8de Planet i 15 \u00e5r!<\/p>","protected":false},"excerpt":{"rendered":"<p>La sonde spatiale Mars Express vient de faire une incroyable d\u00e9couverte : elle a d\u00e9tect\u00e9 des signes d\u2019eau \u00e0 l\u2019\u00e9tat liquide sur la Plan\u00e8te rouge ! Alors que la communaut\u00e9 [&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-371","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\/371","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=371"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/371\/revisions"}],"predecessor-version":[{"id":4419,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/371\/revisions\/4419"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=371"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=371"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=371"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=371"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=371"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=371"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=371"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}