{"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\/sv\/liquid_water_found_on_mars\/","title":{"rendered":"Flytande vatten har uppt\u00e4ckts p\u00e5 Mars!"},"content":{"rendered":"<div class=\"lede\">\n<p>ESA:s rymdsond Mars Express har gjort en fantastisk uppt\u00e4ckt: tecken p\u00e5 flytande vatten p\u00e5 den r\u00f6da planeten! Forskarna har letat efter vatten under l\u00e5ng tid, och detta genombrott kan visa sig vara mycket viktigt.<\/p>\n<\/div>\n<p>F\u00f6r l\u00e4nge sedan var stora delar av Mars yta t\u00e4ckt av hav, floder och sj\u00f6ar. Vi vet detta eftersom vi i dag kan se formationer som till exempel enorma uttorkade floddalar \u00f6ver hela Mars. Dessa har fotograferats i fantastisk detalj av rymdfarkoster i omloppsbana. Landare och rovers som utforskar ytan har ocks\u00e5 hittat mineraler som endast kan bildas i flytande vatten.<\/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 uppt\u00e4cker vatten begravt under Mars sydpol<\/figcaption><\/figure>\n<p>Men allt detta vatten var inte av l\u00e5ngvarig karakt\u00e4r. Klimatet p\u00e5 Mars f\u00f6r\u00e4ndrades, och \u2013 \u00e4ven om Mars Express tidigare har visat att det finns fryst vatten vid planetens poler \u2013 kan flytande vatten inte existera p\u00e5 ytan idag. D\u00e4rf\u00f6r best\u00e4mde sig forskarna f\u00f6r att unders\u00f6ka underjorden! De anv\u00e4nde Mars Express speciella MARSIS (<b>M<\/b>ars <b>A<\/b>avancerad <b>R<\/b>adar f\u00f6r <b>S<\/b>under ytan och <b>I<\/b>onosf\u00e4ren <b>S<\/b>(ljudavgivande) instrument. MARSIS \u00e4r en \u201cmarkpenetrerande radar\u201d. Det inneb\u00e4r att den s\u00e4nder ut radarimpulser fr\u00e5n omloppsbana 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. Smart!<\/p>\n<p>En unders\u00f6kning med hj\u00e4lp av MARSIS har gett det resultat som forskarna har letat efter. Mars sydpolomr\u00e5de best\u00e5r av m\u00e5nga lager av is och damm, ner till ett djup p\u00e5 cirka 1,5 km, inom det 200 km breda omr\u00e5de som unders\u00f6kts. Under dessa skiktade avlagringar uppt\u00e4cktes en s\u00e4rskilt stark radarreflektion med en bredd p\u00e5 20 km. Forskarna tror att det r\u00f6r sig om en stor damm med flytande vatten!<\/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>Perspektivvy av Libya Montes<\/figcaption><\/figure>\n<p>Vissa former av mikrobiellt liv p\u00e5 jorden lever i vattenfickor d\u00e4r f\u00f6rh\u00e5llandena \u00e4r s\u00e5dana att m\u00e4nniskor inte skulle kunna \u00f6verleva, s\u00e5 en stor fr\u00e5ga \u00e4r om det finns n\u00e5gra sm\u00e5 varelser som simmar omkring i detta vatten p\u00e5 Mars? Det kan mycket v\u00e4l finnas m\u00e5nga fler dammar och sj\u00f6ar under Mars yta, som bara v\u00e4ntar p\u00e5 att uppt\u00e4ckas. Vilka hemligheter rymmer de?<\/p>\n<p>Dmitri Titov, projektforskare f\u00f6r ESA:s Mars Express-projekt, uttrycker det b\u00e4st: \u201cDenna sp\u00e4nnande uppt\u00e4ckt \u00e4r en h\u00f6jdpunkt inom planetvetenskapen och kommer att bidra till v\u00e5r f\u00f6rst\u00e5else av Mars utveckling, vattnets historia p\u00e5 v\u00e5r grannplanet och dess beboelighet.\u201d<\/p>\n<p>Skulle du vilja utforska underjordiska sj\u00f6ar p\u00e5 Mars? Vad tror du att vi skulle kunna hitta d\u00e4r?<\/p>\n<p><b>Rolig fakta:<\/b> Mars Express har kretsat kring den r\u00f6da planeten 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\/sv\/wp-json\/wp\/v2\/posts\/370","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=370"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/370\/revisions"}],"predecessor-version":[{"id":4418,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/370\/revisions\/4418"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=370"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=370"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=370"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=370"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=370"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=370"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=370"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=370"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=370"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=370"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}