{"id":964,"date":"2004-11-15T15:56:00","date_gmt":"2004-11-15T14:56:00","guid":{"rendered":"https:\/\/kids.esa.int\/mars_-_the_red_planet\/"},"modified":"2026-10-08T00:34:17","modified_gmt":"2026-10-07T22:34:17","slug":"mars_-_the_red_planet","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/mars_-_the_red_planet\/","title":{"rendered":"Mars \u2013 den r\u00f6da planeten"},"content":{"rendered":"
\n

Mars kallas ofta f\u00f6r \u2018den r\u00f6da planeten\u2019 eftersom den syns p\u00e5 himlen som en orange-r\u00f6d stj\u00e4rna. F\u00e4rgen fick de antika grekerna och romarna att d\u00f6pa den efter sin krigsgud. Idag vet vi, tack vare rymdfarkoster som bes\u00f6kt planeten, att planetens utseende beror p\u00e5 rost i marsstenarna.<\/p>\n<\/div>\n

Mars \u00e4r den fj\u00e4rde planeten r\u00e4knat fr\u00e5n Solen. Den kretsar kring Solen p\u00e5 ett genomsnittligt avst\u00e5nd av 228 miljoner km, vilket \u00e4r ytterligare h\u00e4lften s\u00e5 l\u00e5ngt som avst\u00e5ndet till Jorden, s\u00e5 m\u00e4nskliga bes\u00f6kare skulle uppleva det som mycket kallt. \u00c4ven om somrarna n\u00e4ra ekvatorn kan vara ganska varma, ligger medeltemperaturen p\u00e5 63 grader Celsius under noll \u2013 ungef\u00e4r som vintrarna i Antarktis. N\u00e4tterna \u00e4r ocks\u00e5 iskalla.<\/p>\n

De f\u00f6rsta m\u00e4nniskorna p\u00e5 Mars kommer att st\u00e4llas inf\u00f6r andra problem. Luften \u00e4r 100 g\u00e5nger tunnare \u00e4n p\u00e5 jorden och best\u00e5r till st\u00f6rsta delen av koldioxid. De m\u00e4nskliga uppt\u00e4cktsresande kommer att beh\u00f6va b\u00e4ra syrgasmasker och specialdr\u00e4kter varje g\u00e5ng de g\u00e5r ut ur sina hermetiskt tillslutna bost\u00e4der.<\/p>\n

Kraftiga stormar kan virvla upp dammoln. Ibland sprider sig dessa snabbt \u00f6ver hela planeten och d\u00f6ljer ytan fr\u00e5n sikten.<\/p>","protected":false},"excerpt":{"rendered":"

Mars is often called the ‘Red Planet’ because it appears in the sky as an orange-red star. The colour caused the ancient Greeks and Romans to name it after their […]<\/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\/2003\/08\/hubble_s_close_encounter_with_mars2\/17867008-3-eng-GB\/Hubble_s_close_encounter_with_Mars.jpg","esa_banner_description":"","esa_banner_credit":"NASA\/ESA, J. Bell (Cornell U.) and M. Wolff (SSI)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/08\/Hubble_s_close_encounter_with_Mars2","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":[62,10,13,11,12],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-964","post","type-post","status-publish","format-standard","hentry","category-exploration","category-learn","category-life-in-space","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\/964","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=964"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/964\/revisions"}],"predecessor-version":[{"id":2107,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/964\/revisions\/2107"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=964"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=964"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=964"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=964"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=964"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=964"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=964"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}