{"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\/da\/liftoff_for_gaia\/","title":{"rendered":"Gaia er sendt af sted"},"content":{"rendered":"
\n

ESA\u2019s Gaia-mission blev i morges sendt af sted med en Sojuz-raket fra Europas rumhavn i Kourou i Fransk Guyana p\u00e5 sin sp\u00e6ndende mission, der skal unders\u00f8ge en milliard sole.<\/p>\n<\/div>\n

Gaia vil udarbejde det hidtil mest n\u00f8jagtige kort over M\u00e6lkevejen. Ved at foretage pr\u00e6cise m\u00e5linger af en milliard stjerners positioner og bev\u00e6gelser vil den give svar p\u00e5 sp\u00f8rgsm\u00e5l om vores galakses oprindelse og udvikling.<\/p>\n

Gaia er nu p\u00e5 vej mod en bane omkring et virtuelt punkt i rummet kaldet L2, der ligger omkring 1,5 millioner kilometer l\u00e6ngere v\u00e6k fra Jorden set fra Solen.<\/p>\n

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

Gaia vil gentagne gange afs\u00f8ge himlen og i l\u00f8bet af de fem \u00e5r observere hver af de milliarder stjerner i gennemsnit 70 gange. Den vil m\u00e5le hver stjernes position og vigtigste fysiske egenskaber, herunder dens lysstyrke, temperatur og kemiske sammens\u00e6tning.<\/p>\n

Stjernernes bev\u00e6gelser kan \u2018spoles tilbage\u2019 for at f\u00e5 mere at vide om, hvor de stammer fra, og hvordan M\u00e6lkevejen er opst\u00e5et gennem milliarder af \u00e5r ved sammenst\u00f8d mellem mindre galakser, og de kan \u2018spoles frem\u2019 for at f\u00e5 mere at vide om dens endelige sk\u00e6bne.<\/p>\n

Ved at sammenligne sine gentagne scanninger af himlen vil Gaia ogs\u00e5 opdage titusindvis af supernovaer \u2013 stjernernes sidste skrig, n\u00e5r de n\u00e5r slutningen af deres liv og eksploderer. Og sm\u00e5 periodiske svingninger i nogle stjerners positioner b\u00f8r afsl\u00f8re tilstedev\u00e6relsen af planeter, der kredser om dem, da disse tr\u00e6kker stjernerne fra side til side.<\/p>\n

Gaia vil ogs\u00e5 opdage nye asteroider i vores solsystem og pr\u00e6cisere banerne for de allerede kendte, og den vil foretage n\u00f8jagtige unders\u00f8gelser af Einsteins ber\u00f8mte generelle 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\/da\/wp-json\/wp\/v2\/posts\/604","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/comments?post=604"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/604\/revisions"}],"predecessor-version":[{"id":4575,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/604\/revisions\/4575"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=604"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=604"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=604"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=604"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=604"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=604"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=604"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=604"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=604"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=604"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}