{"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\/nb\/scientists_find_an_extrasolar_sauna\/","title":{"rendered":"Forskere oppdager en sauna utenfor solsystemet"},"content":{"rendered":"<div class=\"lede\">\n<p>En utenomjordisk som flyr forbi Jorden, kan neppe unng\u00e5 \u00e5 legge merke til at v\u00e5r bl\u00e5 planet i stor grad er dekket av hav. Jorden er imidlertid den eneste vannbelagte planeten i solsystemet v\u00e5rt. Siden planeter med vann ser ut til \u00e5 v\u00e6re ganske sjeldne, er det ikke overraskende at forskere er begeistret over den f\u00f8rste oppdagelsen av en vannrik atmosf\u00e6re p\u00e5 en planet som g\u00e5r i bane rundt en fjern stjerne.<\/p>\n<\/div>\n<p>Det er kjent mer enn 200 av disse \u2018ekso-planetene\u2019, men sv\u00e6rt f\u00e5 av dem er blitt avbildet eller observert direkte. Heldigvis kan noen av disse \u2018usynlige\u2019 planetene oppdages n\u00e5r de passerer foran stjernene sine. Slik ble gassgiganten kjent som HD 189733b oppdaget i 2005. Den Jupiter-lignende planeten for\u00e5rsaket en svak nedtoning av 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 eksoplaneten HD 189733b, sett i infrar\u00f8dt lys<\/figcaption><\/figure>\n<p>Siden den gang har europeiske og amerikanske forskere gjennomf\u00f8rt ytterligere studier av HD 189733b. Ved hjelp av NASAs Spitzer-romteleskop m\u00e5lte de det infrar\u00f8de lyset som kom fra stjernen. Da planeten langsomt beveget seg over stjerneskiven, blokkerte dens ytre atmosf\u00e6re \u00e9n b\u00f8lgelengde av lyset i st\u00f8rre grad enn andre b\u00f8lgelengder. Den eneste forklaringen p\u00e5 dette m\u00f8nsteret av lysdemping er tilstedev\u00e6relsen av vanndamp i planetens atmosf\u00e6re.<\/p>\n<p>Dessverre har den gigantiske planeten ingen steinaktig overflate der det kan dannes hav. Den g\u00e5r dessuten i bane sv\u00e6rt n\u00e6r sin stjerne. Med en atmosf\u00e6risk temperatur p\u00e5 over 700 \u00b0C er det altfor varmt til at det kan falle regn. Den dampende HD 189733b er nesten helt sikkert uten liv. Disse resultatene gir imidlertid h\u00e5p om \u00e5 finne vannrike, jordlignende planeter i en ikke altfor 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\/nb\/wp-json\/wp\/v2\/posts\/1060","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=1060"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/1060\/revisions"}],"predecessor-version":[{"id":4828,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/posts\/1060\/revisions\/4828"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/media?parent=1060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/categories?post=1060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/tags?post=1060"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/panel?post=1060"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/language?post=1060"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/age?post=1060"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/duration?post=1060"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/resource_type?post=1060"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/audience?post=1060"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/nb\/wp-json\/wp\/v2\/wf_post_folders?post=1060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}