{"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\/nb\/herschel_esa_s_cosmic_heat_seeker\/","title":{"rendered":"Herschel: ESAs kosmiske varmes\u00f8ker"},"content":{"rendered":"
\n

Sommeren 2008 skal to av de mest f\u00f8lsomme romobservatoriene som noensinne er skutt opp, l\u00f8ftes fra Kourou i Fransk Guyana. Om bord p\u00e5 Ariane 5-raketten vil v\u00e6re Herschel, verdens kraftigste varmes\u00f8kende romteleskop, og Planck, som skal studere den svake str\u00e5lingen som fylte universet umiddelbart etter Big Bang.<\/p>\n<\/div>\n

Alt ved ESAs romobservatorium Herschel er stort. Satellitten er omtrent 7 meter h\u00f8y og 4,3 meter bred, og veier 3,25 tonn. Teleskopet har et hovedspeil med en diameter p\u00e5 3,5 meter, det st\u00f8rste som noensinne er bygget for et vitenskapelig romfart\u00f8y.<\/p>\n

Observatoriet er oppkalt etter en annen vitenskapelig gigant, den tyske astronomen og musikeren William Herschel. I 1800 brukte Herschel et glassprisme til \u00e5 bryte hvitt lys opp i en regnbue av farger. Til sin overraskelse viste et termometer som var plassert ved siden av den r\u00f8de lysstr\u00e5len, en temperatur\u00f8kning. Herschel hadde oppdaget det usynlige lyset fra Solen som forskere kaller \u201cinfrar\u00f8d str\u00e5ling\u201d. Vi kaller det ofte bare \u201cvarme\u201d.<\/p>\n

Herschel vil befinne seg 1,5 millioner kilometer unna, langt nok unna til \u00e5 unng\u00e5 at infrar\u00f8d str\u00e5ling fra Jorden forstyrrer observasjonene. Dens tre instrumenter vil bli kj\u00f8lt ned med flytende helium, slik at temperaturen holdes n\u00e6r det absolutte nullpunktet (-273 \u00b0C).<\/p>\n

Herschel skal brukes til \u00e5 studere det \u2018kalde\u2019 universet. Dets superkalde \u2018\u00f8yne\u2019 vil se gjennom st\u00f8vskyer for \u00e5 studere stjernedannelsesomr\u00e5der, galaksesentre og skjulte planeter. Fremfor alt skal den fors\u00f8ke \u00e5 finne ut hvordan galakser og stjerner ble dannet i det tidlige universet.<\/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\/nb\/wp-json\/wp\/v2\/posts\/1096","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/comments?post=1096"}],"version-history":[{"count":1,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/1096\/revisions"}],"predecessor-version":[{"id":2239,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/1096\/revisions\/2239"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=1096"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=1096"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=1096"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=1096"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=1096"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=1096"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=1096"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=1096"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=1096"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=1096"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}