{"id":931,"date":"2004-11-15T14:32:00","date_gmt":"2004-11-15T13:32:00","guid":{"rendered":"https:\/\/kids.esa.int\/dwarfs_and_supergiants\/"},"modified":"2026-10-08T00:33:54","modified_gmt":"2026-10-07T22:33:54","slug":"dwarfs_and_supergiants","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/nb\/dwarfs_and_supergiants\/","title":{"rendered":"Dverger og supergiganter"},"content":{"rendered":"<div class=\"lede\">\n<p>Solen er en stjerne. Som de fleste stjerner er Solen en kule av sv\u00e6rt varm gass som avgir enorme mengder lys, varme og annen str\u00e5ling. Denne str\u00e5lingen oppst\u00e5r gjennom kjernefysiske reaksjoner i kjernen. Det er som om millioner av hydrogenbomber eksploderer hvert sekund.<\/p>\n<\/div>\n<p>Det finnes mange forskjellige typer stjerner. R\u00f8de stjerner er de kaldeste, med overflatetemperaturer p\u00e5 rundt 2500 grader Celsius. Bl\u00e5hvite stjerner er de varmeste og n\u00e5r en gl\u00f8dende<br \/>40 000 grader. Gule stjerner som Solen ligger et sted imellom, med overflatetemperaturer p\u00e5 rundt 5500 grader.<\/p>\n<p>Stjerner finnes i mange st\u00f8rrelser. Solen er mellomstor. Den forbrenner hydrogenet sitt ganske sakte, slik at den kan fortsette \u00e5 skinne i 10 milliarder \u00e5r. Noen stjerner er mye st\u00f8rre og varmere enn Solen. Den r\u00f8de supergiganten Antares er 800 ganger st\u00f8rre enn Solen. Hvis den befant seg i sentrum av solsystemet v\u00e5rt, ville den slukt alle de indre planetene, inkludert Jorden. I likhet med biler som bruker mye bensin, bruker disse supergigantene opp alt hydrogen- og heliumbrenselet sitt sv\u00e6rt raskt. Etter kanskje 500 millioner \u00e5r d\u00f8r de i en supernovaeksplosjon.<\/p>\n<p>De kaldeste stjernene, som brenner aller sakte, er r\u00f8de dverger. Disse kan leve i mer enn 10 billioner (10 000 milliarder) \u00e5r. Enda kj\u00f8ligere og mindre er brune dverger. Disse er \u2018mislykkede stjerner\u2019. De er s\u00e5 kj\u00f8lige \u2013 noen ganger bare noen f\u00e5 hundre grader p\u00e5 overflaten \u2013 at kjerneprosessene deres aldri kommer i gang.<\/p>","protected":false},"excerpt":{"rendered":"<p>The Sun is a star. Like most stars, the Sun is a ball of very hot gas that gives off huge amounts of light, heat and other radiation. This radiation [&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\/2000\/09\/the_tycho_supernova2\/17865860-3-eng-GB\/The_Tycho_supernova.jpg","esa_banner_description":"The Tycho supernova","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2000\/09\/The_Tycho_supernova2","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-931","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\/931","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=931"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/931\/revisions"}],"predecessor-version":[{"id":2074,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/931\/revisions\/2074"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=931"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=931"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=931"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=931"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=931"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=931"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=931"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=931"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=931"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=931"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}