{"id":194,"date":"2021-12-02T12:44:57","date_gmt":"2021-12-02T11:44:57","guid":{"rendered":"https:\/\/kids.esa.int\/meteors2\/"},"modified":"2026-10-08T00:25:20","modified_gmt":"2026-10-07T22:25:20","slug":"meteors2","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/meteors2\/","title":{"rendered":"Meteorer"},"content":{"rendered":"
\n

Solsystemet er fyldt med materiale, der er tilbage fra planeternes dannelse. Sm\u00e5 stykker sten, der bev\u00e6ger sig gennem rummet, kaldes meteoroider. Hvis de tr\u00e6nger ind i en planets atmosf\u00e6re og br\u00e6nder op, ses de som meteorer. Nogle gange overlever st\u00f8rre stykker sten l\u00e6nge nok til at styrte ned p\u00e5 en planets overflade. Rumsten p\u00e5 Jordens overflade kaldes meteoritter.<\/p>\n<\/div>\n

Meteorer (ofte kaldet \u201cstjerneskud\u201d) er et meget almindeligt syn. Enhver, der kigger op mod en klar nattehimmel, vil f\u00f8r eller senere se disse korte lysspor. Meteorer opst\u00e5r, n\u00e5r meteoritter tr\u00e6nger ind i den \u00f8vre atmosf\u00e6re med hastigheder p\u00e5 omkring 15 km\/s! Meteorspor varer normalt mindre end et sekund. Friktionen med den tynde luft i en h\u00f8jde p\u00e5 omkring 100 km f\u00e5r meteoritterne til at lyse, n\u00e5r de opvarmes og derefter \u00f8del\u00e6gges.<\/p>\n

Meteorer kan ses n\u00e5r som helst, men det bedste tidspunkt at kigge efter dem er under periodiske meteorregn. S\u00e5danne meteorregn forekommer omkring de samme datoer hvert \u00e5r, n\u00e5r Jorden passerer gennem en st\u00f8vstr\u00f8m, som en forbipasserende komet har efterladt.<\/p>\n

Der er omkring 20 st\u00f8rre meteorregn, selvom kun f\u00e5 af dem producerer s\u00e5 mange som 50 meteorer i minuttet. Lejlighedsvis er himlen fyldt med stjerneskud. De mest ber\u00f8mte \u201cmeteorstorme\u201d er forbundet med Leonid-meteorregnen, der finder sted hvert \u00e5r mellem den 14. og 20. november. Meteorregnen har tidligere v\u00e6ret s\u00e5 aktiv, at den lignede faldende sne!<\/p>\n

Nogle meteorer er for svage til at kunne ses, selv om natten, men de kan registreres med radar. Ogs\u00e5 andre planeter har meteorregn. P\u00e5 Mars br\u00e6nder meteoritterne som regel op i den tynde atmosf\u00e6re og danner dermed meteorer. P\u00e5 M\u00e5nen er der imidlertid ingen luft, s\u00e5 meteoritterne rammer overfladen og eksploderer, uden at de br\u00e6nder op.<\/p>","protected":false},"excerpt":{"rendered":"

The Solar System is full of material left over from the formation of the planets. Small chunks of rock that travel through space are known as meteoroids. If they enter […]<\/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\/2013\/07\/meteor_shower\/17904232-2-eng-GB\/Meteor_shower.jpg","esa_banner_description":"Meteor shower","esa_banner_credit":"Night Sky Nation","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2013\/07\/Meteor_shower","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":[46,10,11],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-194","post","type-post","status-publish","format-standard","hentry","category-comets-and-meteors","category-learn","category-our-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\/194","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=194"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/194\/revisions"}],"predecessor-version":[{"id":1337,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/194\/revisions\/1337"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=194"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=194"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=194"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=194"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=194"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=194"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=194"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=194"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=194"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}