{"id":1102,"date":"2006-01-19T11:12:00","date_gmt":"2006-01-19T10:12:00","guid":{"rendered":"https:\/\/kids.esa.int\/the_kuiper_belt\/"},"modified":"2026-10-08T00:36:01","modified_gmt":"2026-10-07T22:36:01","slug":"the_kuiper_belt","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/the_kuiper_belt\/","title":{"rendered":"Kuiperb\u00e6ltet"},"content":{"rendered":"
\n

Moderne teleskoper har afsl\u00f8ret hundredvis af isobjekter uden for Neptuns bane, i et omr\u00e5de kendt som Kuiperb\u00e6ltet. B\u00e6ltet er opkaldt efter Gerard Kuiper, en astronom af hollandsk afstamning, der i 1951 fremsatte den hypotese, at nogle kometer muligvis stammer fra dette omr\u00e5de.<\/p>\n<\/div>\n

Det f\u00f8rste objekt i Kuiperb\u00e6ltet blev opdaget i 1992, hvilket beviste, at Kuipers teori var korrekt. Det er sv\u00e6rt at opdage dem, fordi de er meget svage og bev\u00e6ger sig s\u00e5 langsomt. Det tager hundreder af \u00e5r for disse objekter at fuldf\u00f8re en bane omkring Solen.<\/p>\n

Objekterne er sandsynligvis rester fra planeternes dannelse. De blev slynget ud til dette fjerne ydre omr\u00e5de som f\u00f8lge af vekselvirkninger med k\u00e6mpeplaneterne.<\/p>\n

De fleste af objekterne er sm\u00e5, typisk med en diameter p\u00e5 10\u201350 km. Indtil for nylig var Pluto det st\u00f8rste medlem, selvom en r\u00e6kke andre objekter var n\u00e6sten lige s\u00e5 store.<\/p>\n

\"Eris\"
Eris<\/figcaption><\/figure>\n

I 2005 blev der s\u00e5 fundet et endnu st\u00f8rre objekt. Det blev kendt som 2003 UB313, og forskerne gav det k\u00e6lenavnet \u201cXena\u201d (efter krigerprinsessen i den popul\u00e6re tv-serie), indtil de kunne give det et rigtigt navn, nemlig Eris.<\/p>\n

Da Eris blev opdaget, befandt den sig dobbelt s\u00e5 langt fra Solen som Pluto (97 gange afstanden mellem Solen og Jorden). Dette gjorde den til det fjerneste objekt, der hidtil er observeret i solsystemet. Dens bane er desuden h\u00e6ldet 44 grader, s\u00e5 den bev\u00e6ger sig et godt stykke over og under de andre planeters baner. Man har ogs\u00e5 fundet ud af, at den har en m\u00e5ne, der hedder Dysnomia.<\/p>\n

Det er ikke alle, der er enige i, at Pluto og Eris b\u00f8r betragtes som den niende og tiende planet i solsystemet. I 2006 klassificerede Den Internationale Astronomiske Union dem som \u2018dv\u00e6rgplaneter\u2019.<\/p>","protected":false},"excerpt":{"rendered":"

Modern telescopes have revealed hundreds of icy objects beyond the orbit of Neptune, in a region known as the Kuiper Belt. The Belt is named after Gerard Kuiper, a Dutch-born […]<\/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\/2006\/01\/kuiper_belt2\/17908900-2-eng-GB\/Kuiper_Belt.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\/2006\/01\/Kuiper_Belt2","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-1102","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\/da\/wp-json\/wp\/v2\/posts\/1102","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=1102"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1102\/revisions"}],"predecessor-version":[{"id":4852,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1102\/revisions\/4852"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=1102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=1102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=1102"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=1102"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=1102"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=1102"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=1102"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=1102"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=1102"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=1102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}