{"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\/cs\/scientists_find_an_extrasolar_sauna\/","title":{"rendered":"V\u011bdci objevili mimozemskou saunu"},"content":{"rendered":"<div class=\"lede\">\n<p>Mimozem\u0161\u0165an let\u00edc\u00ed kolem Zem\u011b by si sotva mohl nev\u0161imnout, \u017ee na\u0161i modrou planetu z velk\u00e9 \u010d\u00e1sti pokr\u00fdvaj\u00ed oce\u00e1ny. Zem\u011b je v\u0161ak jedin\u00fdm sv\u011btem pokryt\u00fdm vodou v na\u0161\u00ed slune\u010dn\u00ed soustav\u011b. Vzhledem k tomu, \u017ee planety s vodou se zdaj\u00ed b\u00fdt pom\u011brn\u011b vz\u00e1cn\u00e9, nen\u00ed p\u0159ekvapiv\u00e9, \u017ee v\u011bdci jsou nad\u0161eni prvn\u00edm objevem atmosf\u00e9ry bohat\u00e9 na vodu na planet\u011b ob\u00edhaj\u00edc\u00ed kolem vzd\u00e1len\u00e9 hv\u011bzdy.<\/p>\n<\/div>\n<p>Je zn\u00e1mo v\u00edce ne\u017e 200 t\u011bchto \u2018mimo slune\u010dn\u00edch\u2019 planet, ale jen velmi m\u00e1lo z nich bylo vyfotografov\u00e1no nebo p\u0159\u00edmo pozorov\u00e1no. Na\u0161t\u011bst\u00ed lze n\u011bkter\u00e9 z t\u011bchto \u2018neviditeln\u00fdch\u2019 planet detekovat, kdy\u017e proch\u00e1zej\u00ed p\u0159ed svou hv\u011bzdou (tzv. tranzit). Pr\u00e1v\u011b tak byl v roce 2005 objeven plynn\u00fd obr zn\u00e1m\u00fd jako HD 189733b. Tento sv\u011bt podobn\u00fd Jupiteru zp\u016fsobil m\u00edrn\u00e9 ztmavnut\u00ed sv\u011btla sv\u00e9 mate\u0159sk\u00e9 hv\u011bzdy.<\/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>Exoplaneta HD 189733b p\u0159i pr\u016fchodu p\u0159ed hv\u011bzdou, v infra\u010derven\u00e9m spektru<\/figcaption><\/figure>\n<p>Od t\u00e9 doby provedli evrop\u0161t\u00ed a ameri\u010dt\u00ed v\u011bdci dal\u0161\u00ed v\u00fdzkumy planety HD 189733b. Pomoc\u00ed vesm\u00edrn\u00e9ho dalekohledu Spitzer, kter\u00fd provozuje NASA, zm\u011b\u0159ili infra\u010derven\u00e9 z\u00e1\u0159en\u00ed vych\u00e1zej\u00edc\u00ed z hv\u011bzdy. Kdy\u017e se planeta pomalu pohybovala p\u0159es disk hv\u011bzdy, jej\u00ed vn\u011bj\u0161\u00ed atmosf\u00e9ra blokovala jednu vlnovou d\u00e9lku sv\u011btla v\u00edce ne\u017e ostatn\u00ed vlnov\u00e9 d\u00e9lky. Jedin\u00fdm vysv\u011btlen\u00edm tohoto vzorce ztmavov\u00e1n\u00ed je p\u0159\u00edtomnost vodn\u00ed p\u00e1ry v atmosf\u00e9\u0159e planety.<\/p>\n<p>Bohu\u017eel tato ob\u0159\u00ed planeta nem\u00e1 skalnat\u00fd povrch, na kter\u00e9m by se mohly tvo\u0159it oce\u00e1ny. Nav\u00edc ob\u00edh\u00e1 extr\u00e9mn\u011b bl\u00edzko sv\u00e9 hv\u011bzdy. S teplotou atmosf\u00e9ry p\u0159esahuj\u00edc\u00ed 700 \u00b0C je zde p\u0159\u00edli\u0161 horko na to, aby zde padal d\u00e9\u0161\u0165. Na parn\u00ed planet\u011b HD 189733b t\u00e9m\u011b\u0159 jist\u011b neexistuje \u017eivot. Tyto v\u00fdsledky v\u0161ak vzbuzuj\u00ed nad\u011bji, \u017ee v ne p\u0159\u00edli\u0161 vzd\u00e1len\u00e9 budoucnosti najdeme vodnat\u00e9 planety podobn\u00e9 Zemi.<\/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\/cs\/wp-json\/wp\/v2\/posts\/1060","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/comments?post=1060"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/1060\/revisions"}],"predecessor-version":[{"id":4828,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/1060\/revisions\/4828"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/media?parent=1060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/categories?post=1060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/tags?post=1060"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/panel?post=1060"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/language?post=1060"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/age?post=1060"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/duration?post=1060"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/resource_type?post=1060"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/audience?post=1060"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/wf_post_folders?post=1060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}