{"id":922,"date":"2004-11-15T15:45:00","date_gmt":"2004-11-15T14:45:00","guid":{"rendered":"https:\/\/kids.esa.int\/water_on_mars\/"},"modified":"2026-10-08T00:33:48","modified_gmt":"2026-10-07T22:33:48","slug":"water_on_mars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/water_on_mars\/","title":{"rendered":"Vatten p\u00e5 Mars"},"content":{"rendered":"
\n

P\u00e5 m\u00e5nga s\u00e4tt \u00e4r Mars den planet som mest liknar jorden. En bes\u00f6kare skulle uppt\u00e4cka att en dag p\u00e5 Mars bara \u00e4r n\u00e5got l\u00e4ngre \u00e4n en dag p\u00e5 jorden. Mars lutar dessutom ungef\u00e4r lika mycket som jorden, vilket inneb\u00e4r att det finns \u00e5rstider d\u00e4r.<\/p>\n<\/div>\n

B\u00e5de Mars och Jorden har vita polkapslar. De p\u00e5 Mars \u00e4r mycket mindre och tunnare, s\u00e5 de v\u00e4xer snabbt p\u00e5 vintern och f\u00f6rsvinner n\u00e4stan helt p\u00e5 sommaren. De \u00e4r mycket kallare \u00e4n polkapslarna p\u00e5 Jorden, s\u00e5 de best\u00e5r av fryst koldioxid (det \u2018torris\u2019 som anv\u00e4nds f\u00f6r att skapa dimma i scenf\u00f6rest\u00e4llningar) samt vattenis.<\/p>\n

\"Cracks
Sprickor p\u00e5 Mars tyder p\u00e5 att det finns vatten d\u00e4r<\/figcaption><\/figure>\n

Mars befinner sig mitt i en istid, s\u00e5 det finns f\u00f6r n\u00e4rvarande inget flytande vatten p\u00e5 dess yta. Planeten verkar dock ha varit varmare och fuktigare f\u00f6rr i tiden.<\/p>\n

P\u00e5 bilder tagna av rymdfarkoster har man kunnat se slingrande kanaler som liknar uttorkade flodb\u00e4ddar. De tyder p\u00e5 att enorma m\u00e4ngder vatten en g\u00e5ng fl\u00f6dade \u00f6ver ytan \u2013 m\u00f6jligen fr\u00e5n sm\u00e4ltande is. Det kan till och med ha f\u00f6rekommit regn och sn\u00f6. M\u00e5nga av kanalerna verkar ha fyllt stora kratrar eller mynnat ut p\u00e5 de norra sl\u00e4tterna. Vissa forskare tror att det fanns ett stort hav som t\u00e4ckte den norra halvan av Mars.<\/p>\n

Vart tog vattnet v\u00e4gen? En del kan ha l\u00e4ckt ut i rymden. Resten ligger fruset i marken.<\/p>","protected":false},"excerpt":{"rendered":"

In many ways, Mars is the most Earthlike of all the planets. A visitor would find that a day on Mars is only slightly longer than one on Earth. Mars […]<\/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\/2004\/01\/omega_image_of_the_southern_polar_cap_of_mars_18_january2\/17912443-2-eng-GB\/OMEGA_image_of_the_southern_polar_cap_of_Mars_18_January.jpg","esa_banner_description":"OMEGA image of the southern polar cap of Mars 18 January","esa_banner_credit":"ESA - OMEGA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/01\/OMEGA_image_of_the_southern_polar_cap_of_Mars_18_January2","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":[10,11,12],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-922","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-planets-and-moons","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/922","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=922"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/922\/revisions"}],"predecessor-version":[{"id":4741,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/922\/revisions\/4741"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=922"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=922"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=922"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=922"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=922"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=922"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=922"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=922"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=922"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}