{"id":195,"date":"2021-12-02T12:44:42","date_gmt":"2021-12-02T11:44:42","guid":{"rendered":"https:\/\/kids.esa.int\/galaxies\/"},"modified":"2026-10-08T00:25:21","modified_gmt":"2026-10-07T22:25:21","slug":"galaxies","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/galaxies\/","title":{"rendered":"Galaxer"},"content":{"rendered":"<div class=\"lede\">\n<p>N\u00e4stan alla stj\u00e4rnor ing\u00e5r i gigantiska grupper som kallas galaxer. Solen \u00e4r en av minst 100 miljarder stj\u00e4rnor i v\u00e5r galax, Vintergatan. Och det finns miljarder galaxer i universum.<\/p>\n<\/div>\n<p>Vart vi \u00e4n blickar upp mot himlen ser vi galaxer i olika former och storlekar. Vissa \u00e4r spiralgalaxer, med b\u00f6jda armar som slingrar sig runt en ljus central k\u00e4rna.<\/p>\n<p>Vissa har en stj\u00e4rnrad tv\u00e4rs \u00f6ver mitten, med armar som utg\u00e5r fr\u00e5n b\u00e5da \u00e4ndarna. Andra har ingen igenk\u00e4nnbar form alls. De st\u00f6rsta galaxerna ser ut som tillplattade bollar. De inneh\u00e5ller upp till 10 miljoner miljoner stj\u00e4rnor, men har mycket lite gas eller stoft. N\u00e4stan alla galaxer har ett supermassivt svart h\u00e5l i centrum.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"Brad Whitmore (STScI), and NASA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/05\/When_galaxies_collide_as_shown_by_Antennae_galaxies2\" data-licence=\"ESA Standard Licence\" data-licence-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Terms_and_conditions_of_use_of_images_and_videos_available_on_the_esa_website\"><img decoding=\"async\" loading=\"lazy\" style=\"max-width:100%;height:auto\" src=\"https:\/\/www.esa.int\/var\/esa\/storage\/images\/esa_multimedia\/images\/2003\/05\/when_galaxies_collide_as_shown_by_antennae_galaxies2\/17882362-2-eng-GB\/When_galaxies_collide_as_shown_by_Antennae_galaxies.jpg\" alt=\"When galaxies collide, as shown by Antennae galaxies\"><figcaption>N\u00e4r galaxer kolliderar, vilket Antennagalaxerna visar<\/figcaption><\/figure>\n<p>Galaxerna bildades bara n\u00e5gra hundra miljoner \u00e5r efter att universum skapades. Vid den tiden, f\u00f6r cirka 13 miljarder \u00e5r sedan, var galaxerna sm\u00e5 och l\u00e5g mycket n\u00e4rmare varandra. Kollisioner var vanliga. N\u00e4r galaxerna krockade med varandra v\u00e4xte de i storlek och \u00e4ndrade form.<\/p>\n<p>Sedan dess har universum expanderat. De flesta galaxer r\u00f6r sig ifr\u00e5n varandra med h\u00f6g hastighet, med undantag f\u00f6r galaxhopar d\u00e4r de kretsar kring varandra.<\/p>","protected":false},"excerpt":{"rendered":"<p>Nearly all stars belong to gigantic groups known as galaxies. The Sun is one of at least 100 billion stars in our galaxy, the Milky Way. And there are billions [&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\/2003\/04\/spiral_galaxy_ngc_12322\/17874740-2-eng-GB\/Spiral_galaxy_NGC_1232.jpg","esa_banner_description":"Spiral galaxy NGC 1232","esa_banner_credit":"Spaceweek International","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2003\/04\/Spiral_galaxy_NGC_12322","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":[10,11,21],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-195","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-stars-and-galaxies","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/195","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=195"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/195\/revisions"}],"predecessor-version":[{"id":4351,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/195\/revisions\/4351"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=195"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=195"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=195"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=195"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=195"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=195"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=195"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=195"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=195"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=195"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}