{"id":346556,"date":"2026-08-20T17:43:11","date_gmt":"2026-08-20T17:43:11","guid":{"rendered":"https:\/\/www.europesays.com\/se\/346556\/"},"modified":"2026-08-20T17:43:11","modified_gmt":"2026-08-20T17:43:11","slug":"astronomer-upptacker-den-snabbaste-stjarnan-som-nagonsin-observerats-i-vintergatan","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/se\/346556\/","title":{"rendered":"Astronomer uppt\u00e4cker den snabbaste stj\u00e4rnan som n\u00e5gonsin observerats i Vintergatan"},"content":{"rendered":"<p class=\"bodytext\">Det finns olika typer av stj\u00e4rnor i <a href=\"https:\/\/www.notebookcheck.se\/En-saellsynt-roentgenblixt-fraan-en-supernova-upptaecktes-av-Einstein-Probe.1372121.0.html\" target=\"_self\" class=\"internal-link\" rel=\"nofollow noopener\">universum<\/a>, och vissa av dem har \u00f6verraskande egenskaper och beteenden. Medan vissa forskare har uppt\u00e4ckt en <a href=\"https:\/\/www.notebookcheck.se\/En-saellsynt-brun-dvaerg-som-kretsar-kring-en-massiv-stjaerna-har-upptaeckts-av-TESS.1370306.0.html\" target=\"_self\" class=\"internal-link\" rel=\"nofollow noopener\">s\u00e4llsynt brun dv\u00e4rg<\/a> som kretsar kring en massiv stj\u00e4rna, har andra gjort en anm\u00e4rkningsv\u00e4rd uppt\u00e4ckt.&#13;<\/p>\n<p class=\"bodytext\">Detta himlakropp, som f\u00e5tt namnet S301, befinner sig n\u00e4ra Sagittarius A*, det svarta h\u00e5let i mitten av Vintergatan. Den uppt\u00e4cktes f\u00f6rst 2023 med <a href=\"https:\/\/www.eso.org\/public\/teles-instr\/paranal-observatory\/vlt\/vlt-instr\/gravity\/\" data-htmlarea-external=\"1\" rtekeep=\"1\" rel=\"nofollow noopener\" target=\"_blank\">instrumentet<\/a> <a href=\"https:\/\/www.eso.org\/public\/teles-instr\/paranal-observatory\/vlt\/vlt-instr\/gravity\/\" data-htmlarea-external=\"1\" rtekeep=\"1\" rel=\"nofollow noopener\" target=\"_blank\">Gravity<\/a> p\u00e5 Very Large Telescope. Nyligen har dess r\u00f6relse sp\u00e5rats, vilket har avsl\u00f6jat en mycket l\u00e5ngstr\u00e4ckt bana. Med tanke p\u00e5 dess beteende tror forskarna att den ingick i ett dubbelstj\u00e4rnesystem som kom f\u00f6r n\u00e4ra det supermassiva svarta h\u00e5let, vilket f\u00e5ngade S301 och slungade ut dess f\u00f6ljeslagare.&#13;<\/p>\n<p class=\"bodytext\">Men det som verkligen g\u00f6r S301 anm\u00e4rkningsv\u00e4rd \u00e4r dess otroliga hastighet. Den r\u00f6r sig n\u00e4mligen med en hastighet p\u00e5 cirka 15 500 miles per sekund, vilket motsvarar 8 % av ljusets hastighet. Felix Mang, doktorand vid Max Planck-institutet f\u00f6r utomjordisk fysik i Tyskland, sa i ett <a href=\"https:\/\/www.eso.org\/public\/news\/eso2612\/\" data-htmlarea-external=\"1\" rtekeep=\"1\" rel=\"nofollow noopener\" target=\"_blank\">uttalande<\/a> om detta:\u00a0<\/p>\n<blockquote>\n<p class=\"bodytext\">\u201dDet som \u00e4r speciellt med denna stj\u00e4rna \u00e4r att den kretsar kring Sagittarius A* i en mycket sn\u00e4v bana, som den fullbordar p\u00e5 bara 8,7 \u00e5r, och n\u00e4rmar sig det svarta h\u00e5let p\u00e5 ett avst\u00e5nd som endast \u00e4r 12 g\u00e5nger s\u00e5 stort som avst\u00e5ndet mellan jorden och solen. Det \u00e4r utan motstycke.\u201d<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"Det finns olika typer av stj\u00e4rnor i universum, och vissa av dem har \u00f6verraskande egenskaper och beteenden. Medan&hellip;\n","protected":false},"author":2,"featured_media":346557,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[66],"tags":[2218,373,7083,36619,31065,7084,3122,7085,370,27162,39023,39024,80,78,79,34,7235,39026,39025,31,33,32,30,81,84,2213,15631,83,12241,82,27170],"class_list":["post-346556","post","type-post","status-publish","format-standard","has-post-thumbnail","category-vetenskap-och-teknik","tag-astrofysik","tag-astronomi","tag-barbar-dator","tag-hubble","tag-kosmos","tag-laptop","tag-nasa","tag-notebook","tag-rymden","tag-rymdnyheter","tag-s301","tag-sagittarius-a","tag-science","tag-science-and-technology","tag-scienceandtechnology","tag-se","tag-stjarna","tag-supermassivt-svart-hal","tag-svart-hal","tag-svenska","tag-sverige","tag-sweden","tag-swedish","tag-technology","tag-teknik","tag-teleskop","tag-upptackt","tag-vetenskap","tag-vetenskapsnyheter","tag-vetenskapteknik","tag-vintergatan"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@se\/117129078609529430","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/posts\/346556","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/comments?post=346556"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/posts\/346556\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/media\/346557"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/media?parent=346556"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/categories?post=346556"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/se\/wp-json\/wp\/v2\/tags?post=346556"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}