{"id":661,"date":"2008-07-04T09:36:00","date_gmt":"2008-07-04T07:36:00","guid":{"rendered":"https:\/\/kids.esa.int\/can_et_hear_the_sounds_of_earth\/"},"modified":"2026-10-08T00:30:51","modified_gmt":"2026-10-07T22:30:51","slug":"can_et_hear_the_sounds_of_earth","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/cs\/can_et_hear_the_sounds_of_earth\/","title":{"rendered":"M\u016f\u017ee mimozem\u0161\u0165an sly\u0161et zvuky ze Zem\u011b?"},"content":{"rendered":"<div class=\"lede\">\n<p>\u010cty\u0159i kosmick\u00e9 sondy Cluster agentury ESA zjistily, \u017ee Zem\u011b i jin\u00e9 planety maj\u00ed zp\u016fsob, jak zbytku Galaxie d\u00e1t v\u011bd\u011bt: \u201cJsem tady!\u201d. Tyto sign\u00e1ly z planet lze v\u0161ak zachytit a rozlu\u0161tit pouze pomoc\u00ed velk\u00fdch radioteleskop\u016f. Mimozemsk\u00e1 civilizace, kter\u00e1 zachyt\u00ed p\u0159irozen\u00e9 r\u00e1diov\u00e9 sign\u00e1ly Zem\u011b, usly\u0161\u00ed s\u00e9rii cvrlik\u00e1n\u00ed a p\u00edsk\u00e1n\u00ed, trochu jako kdy\u017e poslouch\u00e1te R2-D2, robota ze Hv\u011bzdn\u00fdch v\u00e1lek.<\/p>\n<\/div>\n<p>V sou\u010dasn\u00e9 dob\u011b ani ty nejmodern\u011bj\u0161\u00ed dalekohledy nemaj\u00ed dostate\u010dn\u00fd v\u00fdkon k tomu, aby dok\u00e1zaly detekovat planety velikosti Zem\u011b ob\u00edhaj\u00edc\u00ed kolem vzd\u00e1len\u00fdch hv\u011bzd. Stejn\u00fd probl\u00e9m \u0159e\u0161\u00ed i mimozem\u0161t\u00ed astronomov\u00e9 \u2013 hled\u00e1n\u00ed Zem\u011b by bylo jako hledat jehlu v kupce sena. R\u00e1diov\u00e9 v\u00fdboje na\u0161\u00ed planety \u2013 10 000kr\u00e1t intenzivn\u011bj\u0161\u00ed ne\u017e nejsiln\u011bj\u0161\u00ed sign\u00e1l vojensk\u00e9ho radaru \u2013 v\u0161ak jasn\u011b prozrazuj\u00ed p\u0159\u00edtomnost Zem\u011b.<\/p>\n<figure class=\"wp-block-image size-natural\" data-width=\"400\" data-credit=\"ESA\" data-detail-url=\"https:\/\/www.esa.int\/Media\/Animations\/Auroral-2HQ\" 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\/media\/animations\/auroral-2hq\/9257-5-eng-GB\/Auroral-2HQ.jpg\" alt=\"\"><\/figure>\n<p>V\u011bdci ji\u017e od 70. let 20. stolet\u00ed v\u011bd\u00ed, \u017ee planety s magnetick\u00fdm polem (v\u010detn\u011b Zem\u011b, Jupitera a Saturnu) vyza\u0159uj\u00ed siln\u00e9 r\u00e1diov\u00e9 sign\u00e1ly. Tyto emise vznikaj\u00ed vysoko nad ka\u017edou planetou p\u016fsoben\u00edm stejn\u00fdch slune\u010dn\u00edch \u010d\u00e1stic, kter\u00e9 zp\u016fsobuj\u00ed, \u017ee pol\u00e1rn\u00ed z\u00e1\u0159e osv\u011btluje oblohu pod nimi. A\u017e dosud astronomov\u00e9 p\u0159edpokl\u00e1dali, \u017ee se tyto r\u00e1diov\u00e9 vlny \u0161\u00ed\u0159\u00ed do vesm\u00edru ve st\u00e1le se roz\u0161i\u0159uj\u00edc\u00edm ku\u017eelu, podobn\u011b jako sv\u011btlo z baterky. D\u00edky misi Cluster nyn\u00ed v\u00edme, \u017ee tomu tak nen\u00ed.<\/p>\n<p>Jak se vlny r\u00e1diov\u00fdch sign\u00e1l\u016f postupn\u011b \u0161\u00ed\u0159ily k jednotliv\u00fdm kosmick\u00fdm lod\u00edm, v\u011bdci mohli vypo\u010d\u00edtat jejich velikost a polohu. Uk\u00e1zalo se, \u017ee sign\u00e1ly se vesm\u00edrem \u0161\u00ed\u0159\u00ed v \u00fazk\u00e9m paprsku. D\u00edky tomu je mnohem snaz\u0161\u00ed p\u0159esn\u011b ur\u010dit, odkud poch\u00e1zej\u00ed. V budoucnu mo\u017en\u00e1 objev\u00edme mimozemsk\u00e9 sv\u011bty t\u00edm, \u017ee se nalad\u00edme na jejich cvrlik\u00e1n\u00ed a p\u00edsk\u00e1n\u00ed.<\/p>","protected":false},"excerpt":{"rendered":"<p>ESA\u2019s four Cluster spacecraft have found that Earth and other planets have a way of shouting \u201cI\u2019m here!\u201d to the rest of the Galaxy. However, the messages from the planets [&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\/2002\/08\/the_cluster_constellation\/17863826-3-eng-GB\/The_Cluster_constellation.jpg","esa_banner_description":"The Cluster constellation","esa_banner_credit":"ESA","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2002\/08\/The_Cluster_constellation","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-661","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\/661","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=661"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/661\/revisions"}],"predecessor-version":[{"id":4616,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/661\/revisions\/4616"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/media?parent=661"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/categories?post=661"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/tags?post=661"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/panel?post=661"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/language?post=661"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/age?post=661"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/duration?post=661"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/resource_type?post=661"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/audience?post=661"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/wf_post_folders?post=661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}