{"id":925,"date":"2004-11-15T14:00:00","date_gmt":"2004-11-15T13:00:00","guid":{"rendered":"https:\/\/kids.esa.int\/star_birth\/"},"modified":"2026-10-08T00:33:50","modified_gmt":"2026-10-07T22:33:50","slug":"star_birth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/star_birth\/","title":{"rendered":"Stjerners tilblivelse"},"content":{"rendered":"<div class=\"lede\">\n<p>Akkurat som mennesker blir stjerner f\u00f8dt, blir de gamle og d\u00f8r. De blir f\u00f8dt i enorme, kalde skyer av gass og st\u00f8v, kjent som \u2018t\u00e5ker\u2019. Den mest kjente av disse er Oriont\u00e5ken, som akkurat kan skimtes med det blotte \u00f8ye.<\/p>\n<\/div>\n<p>Disse skyene begynner \u00e5 krympe under sin egen tyngdekraft. Etter hvert som skyen blir mindre, deler den seg opp i klumper. Hver klump blir til slutt s\u00e5 varm og tett at det oppst\u00e5r kjernefysiske reaksjoner. N\u00e5r temperaturen n\u00e5r 10 millioner grader Celsius, blir klumpen til en ny stjerne.<\/p>\n<p>Etter at de er blitt til, befinner de fleste unge stjerner seg i sentrum av en flat skive av gass og st\u00f8v. Det meste av dette materialet blir etter hvert bl\u00e5st bort av stjernens str\u00e5ling. F\u00f8r dette skjer, kan det dannes planeter rundt sentralstjernen.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"ESA\/ISO, CEA Saclay and ISOCAM Consortium\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/1998\/01\/Star-forming_dark_cloud_imaged_by_ISO2\" 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\/1998\/01\/star-forming_dark_cloud_imaged_by_iso2\/17863159-3-eng-GB\/Star-forming_dark_cloud_imaged_by_ISO.jpg\" alt=\"Star-forming dark cloud imaged by ISO\"><figcaption>M\u00f8rk sky der det dannes stjerner, avbildet av ISO<\/figcaption><\/figure>\n<p>Infrar\u00f8de observatorier kan oppfange varme fra usynlige stjerner som dannes inne i slike skyer. Et av de kraftigste av disse er ESAs romobservatorium Herschel, som ble skutt opp i mai 2009. Herschel skal bruke minst tre \u00e5r p\u00e5 \u00e5 studere de st\u00f8vfylte skyene der stjerner \u2013 b\u00e5de store og sm\u00e5 \u2013 blir til.<\/p>","protected":false},"excerpt":{"rendered":"<p>Like people, stars are born, they grow old and they die. Their birth places are huge, cold clouds of gas and dust, known as &#8216;nebulas&#8217;. The most famous of these [&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\/2004\/01\/nearby_galaxy_ngc_1569_is_a_hotbed_of_star_birth_activity2\/17880180-2-eng-GB\/Nearby_galaxy_NGC_1569_is_a_hotbed_of_star_birth_activity.jpg","esa_banner_description":"Nearby galaxy NGC 1569 is a 'hotbed' of star birth activity","esa_banner_credit":"ESA, NASA and Peter Anders (G\u00f6ttingen University Galaxy Evolution Group, Germany)","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2004\/01\/Nearby_galaxy_NGC_1569_is_a_hotbed_of_star_birth_activity2","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-925","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\/nb\/wp-json\/wp\/v2\/posts\/925","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/comments?post=925"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/925\/revisions"}],"predecessor-version":[{"id":4742,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/925\/revisions\/4742"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=925"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=925"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=925"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=925"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=925"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=925"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=925"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=925"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=925"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=925"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}