{"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\/da\/mars_-_the_red_planet\/","title":{"rendered":"Mars \u2013 den r\u00f8de planet"},"content":{"rendered":"
\n

Mars kaldes ofte for den \u2018r\u00f8de planet\u2019, fordi den ses p\u00e5 himlen som en orange-r\u00f8d stjerne. Farven fik de gamle gr\u00e6kere og romere til at opkalde den efter deres krigsgud. I dag ved vi takket v\u00e6re rumfart\u00f8jer, der har bes\u00f8gt planeten, at dens udseende skyldes rust i de marsiske klipper.<\/p>\n<\/div>\n

Mars er den fjerde planet regnet fra Solen. Den kredser om Solen i en gennemsnitlig afstand p\u00e5 228 millioner km, hvilket er halvanden gang s\u00e5 langt v\u00e6k som Jorden, s\u00e5 menneskelige bes\u00f8gende ville opleve, at der er meget koldt. Selvom somrene n\u00e6r \u00e6kvator kan v\u00e6re ret varme, er gennemsnitstemperaturen 63 grader Celsius under nul \u2013 svarende til vintrene i Antarktis. N\u00e6tterne er ogs\u00e5 bittert kolde.<\/p>\n

De f\u00f8rste mennesker p\u00e5 Mars vil st\u00e5 over for andre udfordringer. Luften er 100 gange tyndere end p\u00e5 Jorden og best\u00e5r hovedsageligt af kuldioxid. De menneskelige opdagelsesrejsende vil v\u00e6re n\u00f8dt til at b\u00e6re iltmasker og specielle dragter, hver gang de tr\u00e6der ud af deres luftt\u00e6tte boliger.<\/p>\n

Voldsomme storme kan hvirvle st\u00f8vskyer op. Nogle gange spreder disse sig hurtigt over hele planeten og skjuler overfladen for synet.<\/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\/da\/wp-json\/wp\/v2\/posts\/964","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=964"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/964\/revisions"}],"predecessor-version":[{"id":2107,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/964\/revisions\/2107"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=964"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=964"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=964"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=964"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=964"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=964"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=964"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}