{"id":1119,"date":"2004-11-15T13:46:00","date_gmt":"2004-11-15T12:46:00","guid":{"rendered":"https:\/\/kids.esa.int\/the_birth_of_galaxies\/"},"modified":"2026-10-08T00:36:12","modified_gmt":"2026-10-07T22:36:12","slug":"the_birth_of_galaxies","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/the_birth_of_galaxies\/","title":{"rendered":"Galaxernas uppkomst"},"content":{"rendered":"
\n

Vi kan inte se n\u00e5got av det som h\u00e4nde under universums f\u00f6rsta 300 000 \u00e5r. Forskarna f\u00f6rs\u00f6ker ta reda p\u00e5 det utifr\u00e5n sina kunskaper om atompartiklar och med hj\u00e4lp av datormodeller.<\/p>\n<\/div>\n

Det enda direkta beviset f\u00f6r sj\u00e4lva Big Bang \u00e4r ett svagt sken i rymden. Rymdfarkoster och teleskop p\u00e5 ballonger uppfattar detta som ett fl\u00e4ckigt m\u00f6nster av n\u00e5got varmare och n\u00e5got kallare gas runt omkring oss. Dessa v\u00e5gor visar ocks\u00e5 var v\u00e4temolnen var n\u00e5got t\u00e4tare.<\/p>\n

Allteftersom miljontals \u00e5r gick drog de t\u00e4ta omr\u00e5dena till sig materia eftersom de hade st\u00f6rre gravitation. Till slut, ungef\u00e4r 100 miljoner \u00e5r efter Big Bang, blev gasen tillr\u00e4ckligt het och t\u00e4t f\u00f6r att de f\u00f6rsta stj\u00e4rnorna skulle kunna bildas.<\/p>\n

Nya stj\u00e4rnor bildades i en takt som var tio g\u00e5nger h\u00f6gre \u00e4n i dagens universum. Stora stj\u00e4rnhopar utvecklades snart till de f\u00f6rsta galaxerna.<\/p>\n

\"Hubble's
Hubbles nyaste kamera riktar blicken mot ett omr\u00e5de d\u00e4r stj\u00e4rnor bildas i h\u00f6g takt<\/figcaption><\/figure>\n

Hubble-rymdteleskopet och kraftfulla markbaserade teleskop b\u00f6rjar nu uppt\u00e4cka galaxer som bildades ungef\u00e4r en miljard \u00e5r efter Big Bang. Dessa sm\u00e5 galaxer l\u00e5g mycket n\u00e4rmare varandra \u00e4n vad galaxer g\u00f6r idag. Kollisioner var vanliga. Precis som tv\u00e5 l\u00e5gor som r\u00f6r sig mot varandra sm\u00e4lte de samman till st\u00f6rre galaxer. V\u00e5r galax, Vintergatan, bildades p\u00e5 detta s\u00e4tt.<\/p>","protected":false},"excerpt":{"rendered":"

We cannot see anything that happened during the first 300  000 years of the Universe. Scientists try to work it out from their knowledge of atomic particles and from computer […]<\/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\/2003\/05\/artist_s_impression_of_the_birth_of_our_galaxy2\/17907421-2-eng-GB\/Artist_s_impression_of_the_birth_of_our_Galaxy.jpg","esa_banner_description":"Artist's impression of the birth of our Galaxy","esa_banner_credit":"NASA and Adolf Schaller","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/05\/Artist_s_impression_of_the_birth_of_our_Galaxy2","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":[10,11,19],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1119","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-story-of-the-universe","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1119","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=1119"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1119\/revisions"}],"predecessor-version":[{"id":4856,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/1119\/revisions\/4856"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=1119"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=1119"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=1119"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=1119"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=1119"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=1119"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=1119"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=1119"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=1119"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=1119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}