{"id":1005,"date":"2004-11-15T13:50:00","date_gmt":"2004-11-15T12:50:00","guid":{"rendered":"https:\/\/kids.esa.int\/what_is_space\/"},"modified":"2026-10-08T00:34:45","modified_gmt":"2026-10-07T22:34:45","slug":"what_is_space","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/what_is_space\/","title":{"rendered":"Hvad er rummet?"},"content":{"rendered":"<div class=\"lede\">\n<p>I rummet kan ingen h\u00f8re dig skrige. Det skyldes, at der ikke er luft i rummet \u2013 der er et vakuum. Lydb\u00f8lger kan ikke bev\u00e6ge sig gennem et vakuum.<\/p>\n<\/div>\n<p>\u2018Det ydre rum\u2019 begynder omkring 100 km over Jorden, hvor den luftlag, der omgiver vores planet, oph\u00f8rer. Da der ikke er luft til at sprede sollyset og skabe en bl\u00e5 himmel, fremst\u00e5r rummet som et sort t\u00e6ppe, der er overs\u00e5et med stjerner.<\/p>\n<p>Rummet opfattes normalt som v\u00e6rende fuldst\u00e6ndig tomt. Men det er ikke sandt. De enorme mellemrum mellem stjernerne og planeterne er fyldt med k\u00e6mpe m\u00e6ngder tyndt spredt gas og st\u00f8v. Selv de mest tomme dele af rummet indeholder mindst et par hundrede atomer eller molekyler pr. kubikmeter.<\/p>\n<p>Rummet er desuden fyldt med mange former for str\u00e5ling, der udg\u00f8r en fare for astronauter. En stor del af denne infrar\u00f8de og ultraviolette str\u00e5ling stammer fra Solen. H\u00f8jenergiske r\u00f8ntgenstr\u00e5ler, gammastr\u00e5ler og kosmiske str\u00e5ler \u2013 partikler, der bev\u00e6ger sig med n\u00e6sten lysets hastighed \u2013 kommer fra fjerne stjernesystemer.<\/p>","protected":false},"excerpt":{"rendered":"<p>In space, no one can hear you scream. This is because there is no air in space \u2013 it is a vacuum. Sound waves cannot travel through a vacuum. &#8216;Outer [&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\/2004\/12\/earth_from_space2\/17871152-2-eng-GB\/Earth_from_space.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/12\/Earth_from_space2","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":[10,11,19],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1005","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-story-of-the-universe","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1005","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=1005"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1005\/revisions"}],"predecessor-version":[{"id":2148,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1005\/revisions\/2148"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=1005"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=1005"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=1005"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=1005"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=1005"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=1005"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=1005"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=1005"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=1005"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=1005"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}