{"id":583,"date":"2014-08-04T08:34:00","date_gmt":"2014-08-04T06:34:00","guid":{"rendered":"https:\/\/kids.esa.int\/here_come_the_perseids3\/"},"modified":"2026-10-08T00:29:54","modified_gmt":"2026-10-07T22:29:54","slug":"here_come_the_perseids3","status":"publish","type":"post","link":"https:\/\/kids.esa.int\/cs\/here_come_the_perseids3\/","title":{"rendered":"Perseidy u\u017e jsou tady!"},"content":{"rendered":"<div class=\"lede\">\n<p>Milovn\u00edky hv\u011bzd \u010dek\u00e1 v polovin\u011b srpna opravdov\u00e1 lah\u016fdka, kdy ka\u017edoro\u010dn\u00ed meteorick\u00fd roj Perzeidy dos\u00e1hne sv\u00e9ho vrcholu! Pokud jste je\u0161t\u011b nikdy nevid\u011bli meteor, je to ide\u00e1ln\u00ed p\u0159\u00edle\u017eitost. Roj trv\u00e1 od konce \u010dervence do 20. srpna, p\u0159i\u010dem\u017e nejvy\u0161\u0161\u00ed aktivita se o\u010dek\u00e1v\u00e1 mezi 11. a 13. srpnem. Obloha bude tmav\u00e1, proto\u017ee srpek M\u011bs\u00edce zapadne pod obzor v polovin\u011b ve\u010dera. A noc by m\u011bla b\u00fdt tak\u00e9 tepl\u00e1, tak\u017ee se ani nebudete muset teple obl\u00e9kat! Sta\u010d\u00ed se dr\u017eet d\u00e1l od jasn\u00fdch sv\u011btel, nechat o\u010di si zvyknout na tmu, pak si lehnout a up\u0159\u00edt pohled na oblohu.<\/p>\n<\/div>\n<figure class=\"wp-block-image size-natural\" data-width=\"550\" data-credit=\"NASA\" data-detail-url=\"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2013\/07\/perseid_map2\" 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\/2013\/07\/perseid_map2\/17878589-2-eng-GB\/perseid_map2.gif\" alt=\"\"><\/figure>\n<p>Perseidy jsou pojmenov\u00e1ny podle souhv\u011bzd\u00ed Persea, ze kter\u00e9ho se zd\u00e1, \u017ee vyza\u0159uj\u00ed. Mohou se v\u0161ak objevit kdekoli na obloze. Nejlep\u0161\u00ed sm\u011br pro pozorov\u00e1n\u00ed je tam, kde je obloha nejtmav\u0161\u00ed, pravd\u011bpodobn\u011b p\u0159\u00edmo nad hlavou. Souhv\u011bzd\u00ed se p\u0159ed p\u016flnoc\u00ed nach\u00e1z\u00ed n\u00edzko na severov\u00fdchod\u011b a brzy r\u00e1no stoup\u00e1 v\u00fd\u0161e nad obzor. Roje je nejl\u00e9pe pozorovat od 23:00 nebo od p\u016flnoci, kdy m\u016f\u017eete vid\u011bt 60\u2013100 meteor\u016f za hodinu.<\/p>\n<p>Perseidy jsou \u00falomky hornin o velikosti zrnka p\u00edsku a\u017e hr\u00e1\u0161ku, kter\u00e9 byly p\u0159ed d\u00e1vnou dobou vyvr\u017eeny kometou Swift-Tuttle. Kometa se p\u0159i ob\u00edh\u00e1n\u00ed kolem Slunce pomalu rozpad\u00e1. V pr\u016fb\u011bhu stalet\u00ed se jej\u00ed drobiv\u00e9 zbytky rozpt\u00fdlily pod\u00e9l jej\u00ed ob\u011b\u017en\u00e9 dr\u00e1hy a vytvo\u0159ily proud \u010d\u00e1stic dlouh\u00fd stovky milion\u016f kilometr\u016f.<\/p>\n<p>Dr\u00e1ha Zem\u011b kolem Slunce n\u00e1s ka\u017edoro\u010dn\u011b v polovin\u011b srpna vede skrz tento komet\u00e1rn\u00ed oblak. \u010c\u00e1stice, neboli meteoroidy, se pohybuj\u00ed rychlost\u00ed 60 km za sekundu vzhledem k Zemi. Kdy\u017e n\u011bkter\u00e1 z nich naraz\u00ed do horn\u00edch vrstev atmosf\u00e9ry, vytvo\u0159\u00ed roz\u017ehavenou stopu p\u0159eh\u0159\u00e1t\u00e9ho vzduchu. Ob\u010das se objev\u00ed i jasn\u011bj\u0161\u00ed \u00falomky, kter\u00e9 mohou vydr\u017eet n\u011bkolik sekund a zanech\u00e1vaj\u00ed za sebou kr\u00e1tkodob\u00e9 stopy z\u00e1\u0159\u00edc\u00edho kou\u0159e a plynu.<\/p>\n<p>Perseidy jsou ide\u00e1ln\u00ed pro digit\u00e1ln\u00ed fotografov\u00e1n\u00ed. Upevn\u011bte fotoapar\u00e1t na stativ, nejl\u00e9pe s \u0161iroko\u00fahl\u00fdm objektivem a nastaven\u00edm vysok\u00e9 citlivosti ISO (pro fotografov\u00e1n\u00ed ve tm\u011b). Nechte z\u00e1v\u011brku otev\u0159enou po dobu 10\u201315 sekund (na opravdu tmav\u00e9m m\u00edst\u011b i d\u00e9le). S trochou \u0161t\u011bst\u00ed byste m\u011bli zachytit jednu nebo v\u00edce Perseid, kter\u00e9 se pro\u017eenou p\u0159es fotografii!<\/p>","protected":false},"excerpt":{"rendered":"<p>Sky watchers will be in for a treat in mid-August, when the annual Perseid meteor shower reaches its peak! If you have never before seen a meteor, this is the [&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\/2013\/07\/perseids_meteor_shower\/17888431-2-eng-GB\/Perseids_meteor_shower.jpg","esa_banner_description":"Perseids meteor shower","esa_banner_credit":"Ali Jarekji, Reuters","esa_banner_licence":"ESA Standard Licence","esa_banner_detail_url":"https:\/\/www.esa.int\/ESA_Multimedia\/Images\/2013\/07\/Perseids_meteor_shower","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":[26],"tags":[],"panel":[],"language":[],"age":[],"duration":[],"resource_type":[],"audience":[],"wf_post_folders":[],"class_list":["post-583","post","type-post","status-publish","format-standard","hentry","category-news"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/583","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=583"}],"version-history":[{"count":5,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/583\/revisions"}],"predecessor-version":[{"id":4562,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/posts\/583\/revisions\/4562"}],"wp:attachment":[{"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/media?parent=583"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/categories?post=583"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/tags?post=583"},{"taxonomy":"panel","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/panel?post=583"},{"taxonomy":"language","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/language?post=583"},{"taxonomy":"age","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/age?post=583"},{"taxonomy":"duration","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/duration?post=583"},{"taxonomy":"resource_type","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/resource_type?post=583"},{"taxonomy":"audience","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/audience?post=583"},{"taxonomy":"wf_post_folders","embeddable":true,"href":"https:\/\/kids.esa.int\/cs\/wp-json\/wp\/v2\/wf_post_folders?post=583"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}