{"id":1130,"date":"2004-11-15T15:52:00","date_gmt":"2004-11-15T14:52:00","guid":{"rendered":"https:\/\/kids.esa.int\/threats_from_space\/"},"modified":"2026-10-08T00:36:20","modified_gmt":"2026-10-07T22:36:20","slug":"threats_from_space","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/threats_from_space\/","title":{"rendered":"Hot fr\u00e5n rymden"},"content":{"rendered":"<div class=\"lede\">\n<p>Jorden \u00e4r den st\u00f6rsta av de fyra stenplaneterna i v\u00e5rt solsystem. Den \u00e4r mycket tung i f\u00f6rh\u00e5llande till sin storlek. I dess centrum finns en stor, j\u00e4rnrik k\u00e4rna, d\u00e4r temperaturen n\u00e5r 6 000 grader Celsius \u2013 lika varmt som solens yta.<\/p>\n<\/div>\n<p>Den flytande yttre k\u00e4rnan virvlar runt n\u00e4r planeten roterar och fungerar som en dynamo p\u00e5 en cykel. Denna dynamo g\u00f6r att jorden beter sig som en stark magnet.<\/p>\n<p>Jordens magnetf\u00e4lt bildar en osynlig bubbla runt planeten och fungerar som ett skydd. Detta skyddar planeten fr\u00e5n de flesta av de h\u00f6ghastighetspartiklar som slungas ut i rymden av solstormar. Ibland tr\u00e4nger partiklarna igenom barri\u00e4ren n\u00e4ra magnetpolerna. Detta ger upphov till jordens norrsken \u2013 allm\u00e4nt k\u00e4nt som norrsken och sydsken.<\/p>\n<p>Jordens yta skyddas ocks\u00e5 av den tjocka atmosf\u00e4ren. Den blockerar st\u00f6rre delen av den skadliga str\u00e5lningen fr\u00e5n rymden. Den g\u00f6r ocks\u00e5 att sm\u00e5 f\u00f6rem\u00e5l som kommer in i atmosf\u00e4ren brinner upp som stj\u00e4rnfall. Endast de st\u00f6rre meteoriterna och kometerna n\u00e5r ytan och exploderar, vilket l\u00e4mnar efter sig stora kratrar.<\/p>\n<p>Till skillnad fr\u00e5n M\u00e5nen och andra stenplaneter finns det idag f\u00e5 nedslagskratrar p\u00e5 jorden. De flesta av dem har slipats bort eller fyllts igen av rinnande vatten, vind och is.<\/p>","protected":false},"excerpt":{"rendered":"<p>Earth is the largest of the four rocky planets in our Solar System. It is very heavy for its size. At its centre is a large, iron-rich core, where the [&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\/05\/meteor_crater_in_arizona3\/17895645-2-eng-GB\/Meteor_Crater_in_Arizona.jpg","esa_banner_description":"Meteor Crater in Arizona","esa_banner_credit":"David Roddy, USGS","esa_banner_licence":"No ESA licences available","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/05\/Meteor_Crater_in_Arizona3","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-1130","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\/sv\/wp-json\/wp\/v2\/posts\/1130","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=1130"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1130\/revisions"}],"predecessor-version":[{"id":2273,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1130\/revisions\/2273"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=1130"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=1130"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=1130"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=1130"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=1130"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=1130"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=1130"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=1130"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=1130"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=1130"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}