{"id":189,"date":"2021-12-02T12:47:40","date_gmt":"2021-12-02T11:47:40","guid":{"rendered":"https:\/\/kids.esa.int\/spacecraft_gaia_satellite_maps_over_a_billion_stars\/"},"modified":"2026-10-08T00:25:17","modified_gmt":"2026-10-07T22:25:17","slug":"spacecraft_gaia_satellite_maps_over_a_billion_stars","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/spacecraft_gaia_satellite_maps_over_a_billion_stars\/","title":{"rendered":"Satelliten Gaia kartl\u00e4gger \u00f6ver en miljard stj\u00e4rnor!"},"content":{"rendered":"<div class=\"lede\">\n<p>En satellit fr\u00e5n Europeiska rymdorganisationen (ESA) vid namn Gaia har under 22 m\u00e5nader kartlagt himlen med st\u00f6rre detaljrikedom \u00e4n n\u00e5gonsin tidigare. Nu har astronomer anv\u00e4nt dessa data f\u00f6r att skapa en ny rymdkarta som visar v\u00e5r galax, Vintergatan, med fantastisk detaljrikedom!<\/p>\n<\/div>\n<p>Denna nya karta inneh\u00e5ller mycket exakta m\u00e4tningar av mer \u00e4n en miljard stj\u00e4rnor, inklusive deras positioner och r\u00f6relser i rymden. Gaia har \u00e4ven m\u00e4tt vissa stj\u00e4rnors f\u00e4rg, ljusstyrka och yttemperatur. Den har till och med samlat in data om vissa stj\u00e4rnor utanf\u00f6r v\u00e5r galax. 14 000 asteroider i v\u00e5rt solsystem har ocks\u00e5 registrerats, vilket ger mer information om dessa m\u00e4rkliga stenar i rymden. Otroligt nog har Gaia kartlagt positionerna f\u00f6r en halv miljon avl\u00e4gsna kvasarer, som \u00e4r ljusstarka galaxer som drivs av aktiviteten hos de supermassiva svarta h\u00e5len i deras k\u00e4rnor!<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"4300\" data-credit=\"ESA\/Gaia\/DPAC\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/05\/Gaia_s_sky_in_colour\" 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\/2018\/05\/gaia_s_sky_in_colour\/17897126-2-eng-GB\/Gaia_s_sky_in_colour.jpg\" alt=\"Gaia\u2019s sky in colour\"><figcaption>Gaias himmel i f\u00e4rg<\/figcaption><\/figure>\n<p>Gaia-uppdraget \u00e4r uppenbarligen mycket viktigt, och d\u00e4rf\u00f6r har cirka 450 forskare och programvaruutvecklare arbetat med att omvandla satellitens data till en stj\u00e4rnkarta. Astronomer \u00f6ver hela v\u00e4rlden har nu tillg\u00e5ng till all denna information, och de \u00e4r mycket entusiastiska! Redan efter en kort tid med att studera kartan har vi kunnat f\u00f6rb\u00e4ttra v\u00e5r f\u00f6rst\u00e5else av stj\u00e4rnornas \u00e5lder i v\u00e5r galax och hur stj\u00e4rnorna r\u00f6r sig i rymden, vilket \u00e4r avg\u00f6rande f\u00f6r att unders\u00f6ka hur stj\u00e4rnor bildas och f\u00f6r\u00e4ndras \u00f6ver tiden.<\/p>\n<p>De nya uppgifterna har ocks\u00e5 anv\u00e4nts f\u00f6r att ber\u00e4kna banorna f\u00f6r 75 klotformiga stj\u00e4rnhopar och 12 dv\u00e4rggalaxer som kretsar kring v\u00e5r Vintergata. Detta kommer att hj\u00e4lpa oss att studera Vintergatan och dess omgivning s\u00e5 som den ser ut idag, hur den s\u00e5g ut tidigare och att f\u00f6ruts\u00e4ga hur den kommer att se ut i framtiden. Hur p\u00e5verkar gravitationen r\u00f6relsen hos objekt i rymden, och hur stor inverkan har den mystiska m\u00f6rka materian? Tack vare Gaia har astronomerna f\u00e5tt m\u00e5nga nya ledtr\u00e5dar.<\/p>\n<figure class=\"wp-block-image size-large\" data-width=\"2560\" data-credit=\"ESA, CC BY-SA 3.0 IGO\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/05\/Cosmic_scales_covered_by_Gaia_s_second_data_release\" data-licence=\"CC BY-SA 3.0 IGO or 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\/2018\/05\/cosmic_scales_covered_by_gaia_s_second_data_release\/17874260-2-eng-GB\/Cosmic_scales_covered_by_Gaia_s_second_data_release.jpg\" alt=\"Cosmic scales covered by Gaia\u2019s second data release\"><figcaption>Kosmiska skalor som omfattas av Gaias andra datapublicering<\/figcaption><\/figure>\n<p>ESA:s vetenskapsdirekt\u00f6r, G\u00fcnther Hasinger, sa: \u201cDe observationer som Gaia har samlat in omdefinierar astronomins grunder.\u201d Det \u00e4r en mycket sp\u00e4nnande tid f\u00f6r den som \u00e4r intresserad av rymden! Vad kommer Gaia-kartan att hj\u00e4lpa oss att uppt\u00e4cka h\u00e4rn\u00e4st?<\/p>\n<p><b>Rolig fakta:<\/b> Vissa av stj\u00e4rnorna m\u00e4ttes med samma precision som om en observat\u00f6r p\u00e5 jorden skulle kunna urskilja ett euromynt p\u00e5 m\u00e5nens yta!<\/p>","protected":false},"excerpt":{"rendered":"<p>A European Space Agency satellite called Gaia has spent 22 months charting the sky in more detail than ever before. Now astronomers have used this data to make a new [&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\/2018\/05\/artist_s_impression_of_gaia\/18247105-2-eng-GB\/Artist_s_impression_of_Gaia.jpg","esa_banner_description":"Artist's impression of Gaia","esa_banner_credit":"ESA\u2013D. Ducros, 2013","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2018\/05\/Artist_s_impression_of_Gaia","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-189","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\/189","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=189"}],"version-history":[{"count":4,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/189\/revisions"}],"predecessor-version":[{"id":4349,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/189\/revisions\/4349"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=189"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=189"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=189"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=189"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=189"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=189"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=189"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=189"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=189"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=189"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}