{"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\/da\/hubble_views_the_colourful_veil\/","title":{"rendered":"Hubble ser det farverige sl\u00f8r"},"content":{"rendered":"
\n

Ligesom levende v\u00e6sener bliver stjerner gamle og d\u00f8r. Men tunge stjerner forsvinder ikke stille og roligt. I stedet slukkes de med et k\u00e6mpe brag. Det eneste, der er tilbage efter det str\u00e5lende lysshow, som en supernovaeksplosion udg\u00f8r, er en varm, gl\u00f8dende gasskal, der med h\u00f8j hastighed flygter fra stedet, hvor stjernen d\u00f8de.<\/p>\n<\/div>\n

Et af de smukkeste eksempler p\u00e5 en supernova-rest er Sl\u00f8rt\u00e5gen, en svag ring af rester i stjernebilledet Svanen. Billeder taget med NASA-ESA\u2019s Hubble-rumteleskop viser med bem\u00e6rkelsesv\u00e6rdig detaljerigdom de spredte rester af en k\u00e6mpestjerne. Det eneste, der er tilbage, er r\u00f8glignende gasstr\u00e5ler.<\/p>\n

Hubble-billederne viser sammenflettede, rebagtige gasstr\u00e5ler i tre forskellige dele af Sl\u00f8rt\u00e5gen. De farverige tr\u00e5de skyldes den enorme energi, der frigives, n\u00e5r de hurtigt bev\u00e6gende rester fra eksplosionen rammer omgivelserne. Chokb\u00f8lger, der skabes af gas, der bev\u00e6ger sig med en hastighed p\u00e5 600.000 km i timen, opvarmer gassen til millioner af grader.<\/p>\n

Der ses to karakteristiske tr\u00e6k p\u00e5 Hubble-billederne: skarpe, line\u00e6re filamenter og brede skyer. Det skyldes, at vi ser dem fra forskellige vinkler. Filamenterne svarer til et billede set fra siden af en tynd chokfront, mens skyerne svarer til et billede set forfra. Farverne angiver lys fra forskellige atomer, der er blevet exciteret af chokb\u00f8lgerne: bl\u00e5t viser ilt, gr\u00f8nt viser svovl, og r\u00f8dt viser brint.<\/p>\n

Supernovaeksplosionen fandt sted for 5.000 til 10.000 \u00e5r siden, hvor vores forf\u00e6dre sandsynligvis ville have set en pludselig stigning i stjernens lysstyrke, indtil den var lige s\u00e5 lys som den halvm\u00e5neformede m\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\/da\/wp-json\/wp\/v2\/posts\/191","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=191"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/191\/revisions"}],"predecessor-version":[{"id":1334,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/191\/revisions\/1334"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=191"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=191"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=191"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=191"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=191"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=191"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=191"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=191"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=191"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=191"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}