{"id":181,"date":"2021-12-02T12:51:04","date_gmt":"2021-12-02T11:51:04","guid":{"rendered":"https:\/\/kids.esa.int\/spacecraft_astronomers_use_esa_space_telescope_to_find_missing_matter\/"},"modified":"2026-10-08T00:25:12","modified_gmt":"2026-10-07T22:25:12","slug":"spacecraft_astronomers_use_esa_space_telescope_to_find_missing_matter","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/spacecraft_astronomers_use_esa_space_telescope_to_find_missing_matter\/","title":{"rendered":"Astronomer anv\u00e4nder ESA:s rymdteleskop f\u00f6r att hitta den saknade materian"},"content":{"rendered":"
\n

Allt vi ser i rymden, till exempel stj\u00e4rnor, planeter och till och med m\u00e4nniskor, best\u00e5r av en typ av materia som kallas baryoner. En stor del av baryonerna i universum verkar dock saknas, och det har varit mycket sv\u00e5rt att sp\u00e5ra dem. En grupp astronomer som anv\u00e4nder ett av ESA:s rymdteleskop, XMM-Newton, har bidragit till att l\u00f6sa detta kosmiska mysterium!<\/p>\n<\/div>\n

Genom att studera det som kallas den kosmiska mikrov\u00e5gsbakgrunden \u2013 det \u00e4ldsta ljuset, som h\u00e4rstammar fr\u00e5n endast 380 000 \u00e5r efter Big Bang \u2013 vet vi hur m\u00e5nga baryoner det borde finnas i universum. Alla baryoner verkar ha funnits i n\u00e5gra miljarder \u00e5r, men sedan f\u00f6rsvinner ungef\u00e4r h\u00e4lften!<\/p>\n

\"Spider
Spindelsinnen<\/figcaption><\/figure>\n

Fabrizio Nicastro \u00e4r en av de forskare som f\u00f6rs\u00f6ker l\u00f6sa denna g\u00e5ta. Han f\u00f6rklarar: \u201cDe saknade baryonerna utg\u00f6r ett av de st\u00f6rsta mysterierna inom modern astrofysik. Vi vet att denna materia m\u00e5ste finnas d\u00e4r ute \u2013 vi ser den i det tidiga universum \u2013 men sedan kan vi inte l\u00e4ngre sp\u00e5ra den. Vart tog den v\u00e4gen?\u201d<\/p>\n

\u00c4ven efter att ha r\u00e4knat samman alla stj\u00e4rnor och all gas i rymden, tillsammans med allt annat som astronomerna kunde hitta, saknades fortfarande 40% av baryonerna. De \u00e4r verkligen duktiga p\u00e5 att g\u00f6mma sig! Fabrizio och hans v\u00e4nner best\u00e4mde sig f\u00f6r att anv\u00e4nda ett speciellt teleskop f\u00f6r att underl\u00e4tta s\u00f6kandet: ESA:s XMM-Newton. Detta teleskop befinner sig i rymden och observerar r\u00f6ntgenstr\u00e5lning ist\u00e4llet f\u00f6r det vanliga ljuset som v\u00e5ra \u00f6gon ser.<\/p>\n

De or\u00e4dda astronomerna anv\u00e4nde XMM-Newton f\u00f6r att studera en kvasar \u2013 en massiv galax med ett supermassivt svart h\u00e5l i centrum som drar in materia och avger stora m\u00e4ngder r\u00f6ntgenstr\u00e5lning! Genom att noggrant analysera data fann de tecken p\u00e5 syre g\u00f6mt i rymden mellan oss och kvasaren. Det h\u00e4r hade vi aldrig kunnat se tidigare! Fabrizio f\u00f6rklarar: \u201cDet finns enorma reserver av materia \u2013 inklusive syre \u2013 som ligger d\u00e4r, och precis i den m\u00e4ngd vi f\u00f6rv\u00e4ntade oss, s\u00e5 nu kan vi \u00e4ntligen fylla luckan i universums baryonbudget.\u201d<\/p>\n

\"Detecting
Att uppt\u00e4cka det varma till heta intergalaktiska mediet<\/figcaption><\/figure>\n

De saknade baryonerna har g\u00f6mt sig i en sorts het dimma som str\u00e4cker sig hundratusentals ljus\u00e5r ut i rymden mellan galaxerna. Mysteriet har l\u00f6sts, och nu kan astronomerna b\u00f6rja studera dessa baryoner f\u00f6r att ta reda p\u00e5 mer om dem!<\/p>\n

Rolig fakta:<\/b> \u00c4ven om baryonisk materia utg\u00f6r allt vi ser, utg\u00f6r den endast 5% av all materia i universum! Den g\u00e5tfulla m\u00f6rka materian utg\u00f6r cirka 25%, och m\u00f6rk energi cirka 70%.<\/p>","protected":false},"excerpt":{"rendered":"

Everything we see in space, such as stars, planets and even people, is made from a type of matter called baryons. However, a lot of the baryons in the Universe […]<\/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\/2018\/07\/xmm-newton\/17910751-2-eng-GB\/XMM-Newton.jpg","esa_banner_description":"XMM-Newton","esa_banner_credit":"ESA-C. Carreau","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/07\/XMM-Newton","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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-181","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/181","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=181"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/181\/revisions"}],"predecessor-version":[{"id":4345,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/181\/revisions\/4345"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=181"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=181"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=181"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=181"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=181"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=181"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=181"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}