{"id":604,"date":"2013-12-19T09:40:00","date_gmt":"2013-12-19T08:40:00","guid":{"rendered":"https:\/\/kids.esa.int\/liftoff_for_gaia\/"},"modified":"2026-10-08T00:30:10","modified_gmt":"2026-10-07T22:30:10","slug":"liftoff_for_gaia","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/sv\/liftoff_for_gaia\/","title":{"rendered":"Gaia lyfter"},"content":{"rendered":"
\n

ESA:s Gaia-uppdrag sk\u00f6ts upp i morse med en Sojuz-raket fr\u00e5n Europas rymdhamn i Kourou i Franska Guyana, p\u00e5 v\u00e4g mot sitt sp\u00e4nnande uppdrag att studera en miljard solar.<\/p>\n<\/div>\n

Gaia kommer att skapa den hittills mest exakta kartan \u00f6ver Vintergatan. Genom att g\u00f6ra exakta m\u00e4tningar av en miljard stj\u00e4rnors positioner och r\u00f6relser kommer den att ge svar p\u00e5 fr\u00e5gor om v\u00e5r galax ursprung och utveckling.<\/p>\n

Gaia \u00e4r nu p\u00e5 v\u00e4g mot en bana runt en virtuell punkt i rymden som kallas L2, cirka 1,5 miljoner kilometer bortom jorden sett fr\u00e5n solen.<\/p>\n

\"Gaia\"
Gaia<\/figcaption><\/figure>\n

Gaia kommer att skanna av himlen upprepade g\u00e5nger och observera var och en av de en miljard stj\u00e4rnorna i genomsnitt 70 g\u00e5nger vardera under de fem \u00e5ren. Den kommer att m\u00e4ta varje stj\u00e4rnas position och viktiga fysikaliska egenskaper, d\u00e4ribland dess ljusstyrka, temperatur och kemiska sammans\u00e4ttning.<\/p>\n

Stj\u00e4rnornas r\u00f6relser kan \u2018spolas tillbaka\u2019 f\u00f6r att f\u00e5 mer kunskap om varifr\u00e5n de kommer och hur Vintergatan har bildats under miljarder \u00e5r genom sammanslagningar av mindre galaxer, och \u2018spolas fram\u00e5t\u2019 f\u00f6r att f\u00e5 mer kunskap om dess slutliga \u00f6de.<\/p>\n

Genom att j\u00e4mf\u00f6ra sina upprepade kartl\u00e4ggningar av himlen kommer Gaia ocks\u00e5 att uppt\u00e4cka tiotusentals supernovor \u2013 stj\u00e4rnornas sista skrik n\u00e4r de n\u00e5r slutet av sina liv och exploderar. Och sm\u00e5 periodiska sv\u00e4ngningar i vissa stj\u00e4rnors positioner b\u00f6r avsl\u00f6ja f\u00f6rekomsten av planeter som kretsar kring dem, eftersom dessa drar stj\u00e4rnorna fr\u00e5n sida till sida.<\/p>\n

Gaia kommer dessutom att uppt\u00e4cka nya asteroider i v\u00e5rt solsystem och f\u00f6rfina banorna f\u00f6r de redan k\u00e4nda, samt genomf\u00f6ra noggranna tester av Einsteins ber\u00f6mda allm\u00e4nna relativitetsteori.<\/p>","protected":false},"excerpt":{"rendered":"

ESA\u2019s Gaia mission blasted off this morning on a Soyuz rocket from Europe\u2019s Spaceport in Kourou, French Guiana, on its exciting mission to study a billion suns. Gaia will create […]<\/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\/2013\/12\/gaia3_h\/17875111-2-eng-GB\/Gaia3_H.jpg","esa_banner_description":"","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2013\/12\/Gaia3_H","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":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-604","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-stars-and-galaxies"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/604","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=604"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/604\/revisions"}],"predecessor-version":[{"id":4575,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/posts\/604\/revisions\/4575"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/media?parent=604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/categories?post=604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/tags?post=604"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/panel?post=604"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/language?post=604"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/age?post=604"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/duration?post=604"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/resource_type?post=604"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/audience?post=604"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/sv\/wp-json\/wp\/v2\/wf_post_folders?post=604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}