{"id":191,"date":"2021-12-02T12:46:55","date_gmt":"2021-12-02T11:46:55","guid":{"rendered":"https:\/\/kids.esa.int\/hubble_views_the_colourful_veil\/"},"modified":"2026-10-08T00:25:18","modified_gmt":"2026-10-07T22:25:18","slug":"hubble_views_the_colourful_veil","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/hubble_views_the_colourful_veil\/","title":{"rendered":"Hubble f\u00e5ngar den f\u00e4rgsprakande sl\u00f6jan"},"content":{"rendered":"
\n

Precis som levande varelser \u00e5ldras stj\u00e4rnor och d\u00f6r. Men tunga stj\u00e4rnor f\u00f6rsvinner inte i tysthet. Ist\u00e4llet slocknar de med en enorm sm\u00e4ll. Allt som \u00e5terst\u00e5r efter den str\u00e5lande ljusshowen som en supernovaexplosion utg\u00f6r \u00e4r ett hett, gl\u00f6dande gasskal som med h\u00f6g hastighet flyr fr\u00e5n platsen d\u00e4r stj\u00e4rnan dog.<\/p>\n<\/div>\n

Ett av de vackraste exemplen p\u00e5 en supernovarest \u00e4r Sl\u00f6janebulosan, en svag ring av restmaterial i stj\u00e4rnbilden Svanen. Bilder tagna med NASA:s och ESA:s rymdteleskop Hubble visar med enast\u00e5ende detaljrikedom de splittrade resterna av en j\u00e4ttestj\u00e4rna. Allt som \u00e5terst\u00e5r \u00e4r r\u00f6kliknande gasmoln.<\/p>\n

Hubble-bilderna visar sammanfl\u00e4tade, repformade gasstr\u00e4ngar i tre olika delar av Sl\u00f6janebulosan. De f\u00e4rggranna tr\u00e5darna uppst\u00e5r till f\u00f6ljd av den enorma energi som frig\u00f6rs n\u00e4r de snabbt r\u00f6rliga resterna fr\u00e5n explosionen sl\u00e5r in i omgivningen. Chockv\u00e5gor, som skapas av gas som r\u00f6r sig med en hastighet av 600 000 km i timmen, v\u00e4rmer upp gasen till miljontals grader.<\/p>\n

Tv\u00e5 utm\u00e4rkande drag syns p\u00e5 Hubble-bilderna: skarpa, linj\u00e4ra filament och breda moln. Detta beror p\u00e5 att vi ser dem fr\u00e5n olika vinklar. Filamenten motsvarar en vy i sidled av en tunn chockfront, medan molnen motsvarar en vy rakt framifr\u00e5n. F\u00e4rgerna visar ljus som kommer fr\u00e5n olika atomer som exciterats av chockv\u00e5gorna: bl\u00e5tt visar syre, gr\u00f6nt visar svavel och r\u00f6tt visar v\u00e4te.<\/p>\n

Supernovaexplosionen intr\u00e4ffade f\u00f6r 5 000 till 10 000 \u00e5r sedan, d\u00e5 v\u00e5ra f\u00f6rf\u00e4der troligen s\u00e5g en pl\u00f6tslig \u00f6kning av stj\u00e4rnans ljusstyrka tills den blev lika stark som en halvm\u00e5ne.<\/p>","protected":false},"excerpt":{"rendered":"

Like living things, stars grow old and die. But heavyweight stars don\u2019t fade away quietly. Instead, they go out with an enormous bang. All that remains after the brilliant light […]<\/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\/2007\/08\/uncovering_the_veil_nebula\/17905793-2-eng-GB\/Uncovering_the_Veil_Nebula.jpg","esa_banner_description":"Uncovering the Veil Nebula","esa_banner_credit":"NASA - ESA - Hubble Heritage (STScI\/AURA)-ESA\/Hubble Collaboration","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/08\/Uncovering_the_Veil_Nebula","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":[10,44,40],"tags":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-191","post","type-post","status-publish","format-standard","hentry","category-learn","category-spacecraft","category-technology","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/191","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=191"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/191\/revisions"}],"predecessor-version":[{"id":1334,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/191\/revisions\/1334"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=191"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=191"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=191"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=191"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=191"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=191"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=191"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}