{"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\/sv\/the_kuiper_belt\/","title":{"rendered":"Kuiperb\u00e4ltet"},"content":{"rendered":"
\n

Moderna teleskop har uppt\u00e4ckt hundratals isiga himlakroppar bortom Neptunus bana, i ett omr\u00e5de som kallas Kuiperb\u00e4ltet. B\u00e4ltet \u00e4r uppkallat efter Gerard Kuiper, en nederl\u00e4ndsk astronom som 1951 framf\u00f6rde teorin att vissa kometer kan ha sitt ursprung i detta omr\u00e5de.<\/p>\n<\/div>\n

Det f\u00f6rsta objektet i Kuiperb\u00e4ltet uppt\u00e4cktes 1992, vilket bevisade att Kuipers teori st\u00e4mde. Det \u00e4r sv\u00e5rt att uppt\u00e4cka dem eftersom de \u00e4r mycket svaga och r\u00f6r sig s\u00e5 l\u00e5ngsamt. Det tar hundratals \u00e5r f\u00f6r dessa objekt att fullborda ett varv runt Solen.<\/p>\n

F\u00f6rem\u00e5len \u00e4r troligen rester fr\u00e5n planeternas bildande. De slungades ut till detta avl\u00e4gsna yttre omr\u00e5de genom v\u00e4xelverkan med j\u00e4tteplaneterna.<\/p>\n

De flesta av objekten \u00e4r sm\u00e5, vanligtvis 10\u201350 km i diameter. Fram till nyligen var Pluto det st\u00f6rsta objektet, \u00e4ven om ett antal andra objekt var n\u00e4stan lika stora.<\/p>\n

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

\u00c5r 2005 uppt\u00e4cktes sedan ett \u00e4nnu st\u00f6rre objekt. Det kallas 2003 UB313, och forskarna gav det smeknamnet \u201cXena\u201d (efter krigarprinsessan i den popul\u00e4ra tv-serien) tills de kunde ge det ett riktigt namn: Eris.<\/p>\n

N\u00e4r Eris uppt\u00e4cktes befann den sig dubbelt s\u00e5 l\u00e5ngt fr\u00e5n Solen som Pluto (97 avst\u00e5nd mellan Solen och Jorden). Detta gjorde den till det mest avl\u00e4gset bel\u00e4gna objektet som hittills observerats i solsystemet. Dess bana \u00e4r dessutom lutad 44 grader, vilket inneb\u00e4r att den r\u00f6r sig l\u00e5ngt ovanf\u00f6r och under de andra planeternas banor. Man har ocks\u00e5 uppt\u00e4ckt att den har en m\u00e5ne, som f\u00e5tt namnet Dysnomia.<\/p>\n

Det \u00e4r inte alla som h\u00e5ller med om att Pluto och Eris b\u00f6r betraktas som den nionde och tionde planeten i solsystemet. \u00c5r 2006 klassificerade Internationella astronomiska unionen dem som \u2018dv\u00e4rgplaneter\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\/sv\/wp-json\/wp\/v2\/posts\/1102","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=1102"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1102\/revisions"}],"predecessor-version":[{"id":4852,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1102\/revisions\/4852"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=1102"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=1102"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=1102"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=1102"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=1102"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=1102"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=1102"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=1102"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=1102"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=1102"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}