{"id":1096,"date":"2007-10-19T13:43:00","date_gmt":"2007-10-19T11:43:00","guid":{"rendered":"https:\/\/kids.esa.int\/herschel_esa_s_cosmic_heat_seeker\/"},"modified":"2026-10-08T00:35:58","modified_gmt":"2026-10-07T22:35:58","slug":"herschel_esa_s_cosmic_heat_seeker","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/herschel_esa_s_cosmic_heat_seeker\/","title":{"rendered":"Herschel: ESA\u2019s kosmiske varmes\u00f8ger"},"content":{"rendered":"
\n

I sommeren 2008 vil to af de mest f\u00f8lsomme rumobservatorier, der nogensinde er sendt op, blive opsendt fra Kourou i Fransk Guyana. Om bord p\u00e5 Ariane 5-raketten vil v\u00e6re Herschel, verdens mest kraftfulde varmes\u00f8gende rumteleskop, og Planck, som skal unders\u00f8ge den svage str\u00e5ling, der fyldte universet umiddelbart efter Big Bang.<\/p>\n<\/div>\n

Alt ved ESA\u2019s Herschel-rumobservatorium er stort. Satellitten er ca. 7 meter h\u00f8j og 4,3 meter bred og vejer 3,25 ton. Teleskopet har et hovedspejl med en diameter p\u00e5 3,5 meter, hvilket er det st\u00f8rste, der nogensinde er bygget til et videnskabeligt rumfart\u00f8j.<\/p>\n

Observatoriet er opkaldt efter en anden videnskabelig gigant, den tyske astronom og musiker William Herschel. I 1800 brugte Herschel et glasprisme til at opdele hvidt lys i en regnbue af farver. Til sin overraskelse viste et termometer, der var placeret ved siden af den r\u00f8de lysstr\u00e5le, en stigning i temperaturen. Herschel havde opdaget det usynlige lys fra Solen, som forskerne kalder \u201cinfrar\u00f8d str\u00e5ling\u201d. Vi kalder det ofte bare \u201cvarme\u201d.<\/p>\n

Herschel vil befinde sig 1,5 millioner kilometer v\u00e6k, hvilket er langt nok til at undg\u00e5 problemer for\u00e5rsaget af, at infrar\u00f8d str\u00e5ling fra Jorden forstyrrer observationerne. Dens tre instrumenter vil blive afk\u00f8let med flydende helium, s\u00e5 de n\u00e5r en temperatur t\u00e6t p\u00e5 det absolutte nulpunkt (-273 \u00b0C).<\/p>\n

Herschel skal bruges til at unders\u00f8ge det \u2018kolde\u2019 univers. Dets superkolde \u2018\u00f8jne\u2019 vil kunne se igennem st\u00f8vskyer for at unders\u00f8ge stjernedannelsesomr\u00e5der, galaksernes centre og skjulte planeter. Frem for alt skal den fors\u00f8ge at finde ud af, hvordan galakser og stjerner blev dannet i det tidlige univers.<\/p>","protected":false},"excerpt":{"rendered":"

In the summer of 2008, two of the most sensitive space observatories ever launched will lift off from Kourou in French Guiana. On board the Ariane 5 rocket will be […]<\/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\/2007\/09\/sun_earth_and_the_spacecraft_are_aligned2\/17892130-2-eng-GB\/Sun_Earth_and_the_spacecraft_are_aligned.jpg","esa_banner_description":"","esa_banner_credit":"ESA\/AOES Medialab","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/09\/Sun_Earth_and_the_spacecraft_are_aligned2","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":[2],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1096","post","type-post","status-publish","format-standard","hentry","category-learn","category-our-universe","category-stars-and-galaxies","tag-background-article"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1096","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=1096"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1096\/revisions"}],"predecessor-version":[{"id":2239,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1096\/revisions\/2239"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=1096"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=1096"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=1096"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=1096"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=1096"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=1096"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=1096"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=1096"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=1096"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=1096"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}