{"id":1060,"date":"2007-07-12T13:03:00","date_gmt":"2007-07-12T11:03:00","guid":{"rendered":"https:\/\/kids.esa.int\/scientists_find_an_extrasolar_sauna\/"},"modified":"2026-10-08T00:35:27","modified_gmt":"2026-10-07T22:35:27","slug":"scientists_find_an_extrasolar_sauna","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/da\/scientists_find_an_extrasolar_sauna\/","title":{"rendered":"Forskere finder en sauna uden for solsystemet"},"content":{"rendered":"<div class=\"lede\">\n<p>En rumv\u00e6sen, der flyver forbi Jorden, kan n\u00e6ppe undg\u00e5 at l\u00e6gge m\u00e6rke til, at vores bl\u00e5 planet i vid udstr\u00e6kning er d\u00e6kket af hav. Jorden er dog den eneste vandd\u00e6kkede planet i vores solsystem. Da v\u00e5de planeter tilsyneladende er ret sj\u00e6ldne, er det ikke overraskende, at forskerne er begejstrede over den f\u00f8rste opdagelse af en vandrig atmosf\u00e6re p\u00e5 en planet, der kredser om en fjern stjerne.<\/p>\n<\/div>\n<p>Der kendes mere end 200 af disse \u2018ekssolare\u2019 planeter, men kun meget f\u00e5 er blevet fotograferet eller observeret direkte. Heldigvis kan nogle af disse \u2018usynlige\u2019 planeter opdages, n\u00e5r de passerer foran deres stjerner. Det var s\u00e5dan, at gasgiganten HD 189733b blev opdaget i 2005. Den Jupiter-lignende planet for\u00e5rsagede en svag d\u00e6mpning af lyset fra sin moderstjerne.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"ESA (C.Carreau)\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/07\/Transiting_exoplanet_HD_189733b_in_the_infrared2\" 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\/2007\/07\/transiting_exoplanet_hd_189733b_in_the_infrared2\/17867266-3-eng-GB\/Transiting_exoplanet_HD_189733b_in_the_infrared.jpg\" alt=\"Transiting exoplanet HD 189733b, in the infrared\"><figcaption>Den forbig\u00e5ende exoplanet HD 189733b set i det infrar\u00f8de spektrum<\/figcaption><\/figure>\n<p>Siden da har europ\u00e6iske og amerikanske forskere foretaget yderligere unders\u00f8gelser af HD 189733b. Ved hj\u00e6lp af NASAs Spitzer-rumteleskop m\u00e5lte de det infrar\u00f8de lys, der kom fra stjernen. Da planeten langsomt bev\u00e6gede sig hen over stjernens skive, blokerede dens ydre atmosf\u00e6re \u00e9n bestemt b\u00f8lgel\u00e6ngde af lyset i h\u00f8jere grad end andre b\u00f8lgel\u00e6ngder. Den eneste forklaring p\u00e5 dette m\u00f8nster af lysd\u00e6mpning er tilstedev\u00e6relsen af vanddamp i planetens atmosf\u00e6re.<\/p>\n<p>Desv\u00e6rre har den gigantiske planet ingen stenet overflade, hvor der kan dannes oceaner. Den kredser desuden ekstremt t\u00e6t p\u00e5 sin stjerne. Med en atmosf\u00e6risk temperatur p\u00e5 over 700 \u00b0C er den alt for varm til, at der kan falde regn. Den dampende HD 189733b er n\u00e6sten helt sikkert uden liv. Disse resultater v\u00e6kker dog h\u00e5b om at finde vandrige, jordlignende planeter i en ikke alt for fjern fremtid.<\/p>","protected":false},"excerpt":{"rendered":"<p>An alien flying past the Earth could hardly fail to notice that our blue planet is largely covered by oceans. However, Earth is the only water-covered world in our Solar [&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\/2007\/07\/transiting_exoplanet_hd_189733b2\/17903269-2-eng-GB\/Transiting_exoplanet_HD_189733b.jpg","esa_banner_description":"Transiting exoplanet HD 189733b","esa_banner_credit":"ESA - C.Carreau","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2007\/07\/Transiting_exoplanet_HD_189733b2","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":[14,10,13],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-1060","post","type-post","status-publish","format-standard","hentry","category-are-we-alone","category-learn","category-life-in-space"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1060","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=1060"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1060\/revisions"}],"predecessor-version":[{"id":4828,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/posts\/1060\/revisions\/4828"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/media?parent=1060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/categories?post=1060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/tags?post=1060"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/panel?post=1060"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/language?post=1060"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/age?post=1060"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/duration?post=1060"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/resource_type?post=1060"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/audience?post=1060"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/da\/wp-json\/wp\/v2\/wf_post_folders?post=1060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}