{"id":492,"date":"2016-05-30T07:29:00","date_gmt":"2016-05-30T05:29:00","guid":{"rendered":"https:\/\/kids.esa.int\/the_aurora\/"},"modified":"2026-10-08T00:28:49","modified_gmt":"2026-10-07T22:28:49","slug":"the_aurora","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/the_aurora\/","title":{"rendered":"Nordlyset"},"content":{"rendered":"<div class=\"lede\">\n<p>Har du nogensinde set nordlys? Et smukt forh\u00e6ng af b\u00f8lgende lys p\u00e5 nattehimlen \u2013 det er et betagende og uforglemmeligt syn for dem, der er s\u00e5 heldige at have oplevet det. Men hvad er \u00e5rsagen til nordlys?<\/p>\n<\/div>\n<p>Det hele starter med vores n\u00e6rmeste stjerne, Solen. Solen er utrolig energirig og producerer konstant det, vi kalder solvinden \u2013 en str\u00f8m af bittesm\u00e5 partikler. Disse flyver ud i rummet og afb\u00f8jes af det magnetfelt, der omgiver Jorden.<\/p>\n<p>Normalt er det slut p\u00e5 historien\u2026 men nogle gange forekommer der enorme udbrud p\u00e5 Solen, s\u00e5kaldte soludbrud, som g\u00f8r solvinden endnu st\u00e6rkere. N\u00e5r det sker, har partiklerne s\u00e5 meget energi, at de ikke bare flyver ind i Jordens magnetfelt \u2013 de smadrer lige ind i det!<\/p>\n<p>Partiklerne fra solvinden f\u00f8lger derefter Jordens magnetfelt mod vores planets nord- og sydpoler. Til sidst st\u00f8der partiklerne sammen med gasserne i vores atmosf\u00e6re. Al den energi frigives derefter som lys! N\u00e5r partiklerne fra solvinden kolliderer med ilt, skaber de en fantastisk gr\u00f8n farve. Kv\u00e6lstof skaber smukke nuancer af bl\u00e5t og lilla. Det er netop dette, der for\u00e5rsager nordlyset.<\/p>\n<p>Selvom nordlyset er smukt, kan andre bivirkninger af solvinden skabe problemer. De h\u00f8jenergiske partikler kan beskadige satellitter i kredsl\u00f8b om vores planet og udg\u00f8re en trussel mod astronauternes sikkerhed. De kan endda for\u00e5rsage str\u00f8mafbrydelser her nede p\u00e5 Jordens overflade. Nordlyset er ikke noget, der kun findes p\u00e5 Jorden. Nogle andre planeter i vores solsystem, s\u00e5som Saturn og Jupiter, har ogs\u00e5 magnetfelter. Partikler fra solvinden kan kollidere med dem, ligesom det sker med Jorden! Vil du gerne flyve til en anden planet og se dens nordlys?<\/p>\n<p><b>Sjovt faktum:<\/b> Nordlyset er opkaldt efter den romerske gudinde for daggryet.<\/p>\n<nav class=\"related\" aria-label=\"Relateret\">\n<h2 class=\"related__heading\">Relateret<\/h2>\n<div class=\"grid related__grid\">\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/da\/polarlys\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Dansk<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/da\/aurora_of_het_poollicht\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">hollandsk<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/da\/les_aurores\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Fransk<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/da\/das_nordlicht\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Tysk<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/da\/l_aurora\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Italiensk<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/da\/polarlyset\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Norsk<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/da\/zorza_polarna\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Polsk<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/da\/la_aurora\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Spansk<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<div class=\"grid-item\">\n<article class=\"card focuson agency\"><a class=\"card__link\" href=\"\/da\/auroran_norrskenet\/\"><\/p>\n<figure class=\"thumbnail\"><span class=\"dimmer\"><\/span><\/figure>\n<header class=\"entry\">\n<h3 class=\"heading\">Svensk<\/h3>\n<\/header>\n<p><\/a><\/article>\n<\/div>\n<\/div>\n<\/nav>","protected":false},"excerpt":{"rendered":"<p>Have you ever seen the aurora? A beautiful curtain of rippling light in the night sky, it is an awe-inspiring and unforgettable sight for those lucky enough to have witnessed [&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\/2012\/09\/aurora_borealis2\/17887210-2-eng-GB\/Aurora_borealis.jpg","esa_banner_description":"Aurora borealis","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2012\/09\/Aurora_borealis2","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":[10,11,35],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-492","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-the-sun"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/492","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=492"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/492\/revisions"}],"predecessor-version":[{"id":1635,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/492\/revisions\/1635"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=492"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=492"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=492"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=492"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=492"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=492"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=492"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=492"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=492"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=492"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}