{"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\/nb\/water_on_mars\/","title":{"rendered":"Vann p\u00e5 Mars"},"content":{"rendered":"
\n

P\u00e5 mange m\u00e5ter er Mars den av alle planetene som ligner mest p\u00e5 Jorden. En bes\u00f8kende ville oppdage at en dag p\u00e5 Mars bare er litt lengre enn en dag p\u00e5 Jorden. Mars har ogs\u00e5 omtrent samme helling som Jorden, s\u00e5 det har \u00e5rstider.<\/p>\n<\/div>\n

B\u00e5de Mars og Jorden har hvite polkapper. Polkappene p\u00e5 Mars er mye mindre og tynnere, s\u00e5 de vokser raskt om vinteren og forsvinner nesten helt om sommeren. De er mye kaldere enn polkappene p\u00e5 Jorden, s\u00e5 de best\u00e5r av b\u00e5de frosset karbondioksid (det \u2018t\u00f8rriset\u2019 som brukes til \u00e5 lage t\u00e5ke i sceneshow) og vannis.<\/p>\n

\"Cracks
Sprekker p\u00e5 Mars tyder p\u00e5 at det finnes vann der<\/figcaption><\/figure>\n

Mars befinner seg midt i en istid, s\u00e5 det kan for \u00f8yeblikket ikke finnes flytende vann p\u00e5 overflaten. Planeten ser imidlertid ut til \u00e5 ha v\u00e6rt varmere og fuktigere tidligere.<\/p>\n

P\u00e5 bilder tatt av romfart\u00f8y har man sett svingete kanaler som ser ut som t\u00f8rre elveleier. De tyder p\u00e5 at enorme mengder vann en gang str\u00f8mmet over overflaten \u2013 muligens fra smeltende is. Det kan til og med ha v\u00e6rt regn og sn\u00f8. Mange av kanalene ser ut til \u00e5 ha fylt store kratere eller munnet ut p\u00e5 de nordlige slettene. Noen forskere mener at det en gang fantes et stort hav som dekket den nordlige halvdelen av Mars.<\/p>\n

Hvor ble det av vannet? Noe av det kan ha str\u00f8mmet ut i verdensrommet. Resten ligger frosset i bakken.<\/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\/nb\/wp-json\/wp\/v2\/posts\/922","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=922"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/922\/revisions"}],"predecessor-version":[{"id":4741,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/922\/revisions\/4741"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=922"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=922"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=922"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=922"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=922"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=922"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=922"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=922"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=922"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}