{"id":22318,"date":"2026-03-12T16:13:11","date_gmt":"2026-03-12T16:13:11","guid":{"rendered":"https:\/\/www.europesays.com\/cz\/22318\/"},"modified":"2026-03-12T16:13:11","modified_gmt":"2026-03-12T16:13:11","slug":"na-vecerni-obloze-je-zviretnikove-svetlo-ktere-popsal-brian-may","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/cz\/22318\/","title":{"rendered":"Na ve\u010dern\u00ed obloze je zv\u00ed\u0159etn\u00edkov\u00e9 sv\u011btlo, kter\u00e9 popsal Brian May"},"content":{"rendered":"

Zv\u00ed\u0159etn\u00edkov\u00e9 \u010di zodiak\u00e1ln\u00ed sv\u011btlo je slune\u010dn\u00ed sv\u011btlo rozpt\u00fdlen\u00e9 na \u010d\u00e1stic\u00edch meziplanet\u00e1rn\u00ed hmoty. Tyto \u010d\u00e1stice s\u00a0rozm\u011bry \u0159\u00e1dov\u011b 0,001\u00a0\u2013 0,1\u00a0mm poch\u00e1zej\u00ed p\u0159edev\u0161\u00edm z\u00a0ohon\u016f komet, drol\u00edc\u00edch se asteroid\u016f, ale tak\u00e9 z \u201epra\u0161n\u00e9\u201c planety Mars. Proto\u017ee jsou rozprost\u0159eny p\u0159edev\u0161\u00edm v\u00a0rovin\u011b ekliptiky (rovin\u011b, ve kter\u00e9 le\u017e\u00ed zemsk\u00e1 dr\u00e1ha), prom\u00edt\u00e1 se n\u00e1m sv\u011bteln\u00fd ku\u017eel na oblohu do zv\u00ed\u0159etn\u00edkov\u00fdch neboli zodiak\u00e1ln\u00edch souhv\u011bzd\u00ed.<\/p>\n

V oblastech pobl\u00ed\u017e rovn\u00edku je zodiak\u00e1ln\u00ed sv\u011btlo pozorovateln\u00e9 po cel\u00fd rok, jeliko\u017e nikdy nesv\u00edr\u00e1 s\u00a0obzorem tak mal\u00fd \u00fahel, aby se ztratilo n\u00edzko nad obzorem. Z\u00a0na\u0161ich zem\u011bpisn\u00fdch \u0161\u00ed\u0159ek jej m\u016f\u017eeme nejl\u00e9pe sledovat okolo rovnodennost\u00ed, na ja\u0159e ve\u010der po soumraku nad z\u00e1padn\u00edm obzorem a\u00a0na podzim na v\u00fdchod\u011b r\u00e1no p\u0159ed rozb\u0159eskem.<\/p>\n

Astronomov\u00e9 nicm\u00e9n\u011b upozor\u0148uj\u00ed, \u017ee p\u0159em\u00edra sv\u011bteln\u00e9ho zne\u010di\u0161t\u011bn\u00ed z\u00a0m\u011bst se zasadila o\u00a0postupn\u00e9 \u201ezneviditeln\u011bn\u00ed\u201c tohoto jevu; aby ho \u010dlov\u011bk spat\u0159il, mus\u00ed si vybrat vhodn\u00e9 m\u00edsto.<\/p>\n

<\/a><\/p>\n

V \u010cesku se d\u00e1 \u00fakaz sledovat na Vyso\u010din\u011b, na \u0160umav\u011b, v\u00a0Novohradsk\u00fdch hor\u00e1ch, v\u00a0Beskydech, Jesen\u00edk\u00e1ch, na Man\u011bt\u00ednsku nebo v\u00a0Orlick\u00fdch a\u00a0Jizersk\u00fdch hor\u00e1ch, kde jsou nav\u00edc i\u00a0oblasti vyhl\u00e1\u0161en\u00e9 jako \u201erezervace tmy\u201c<\/a>.<\/p>\n

Pokud se tedy nach\u00e1z\u00edte pobl\u00ed\u017e t\u011bchto m\u00edst nebo obecn\u011b d\u00e1l od velk\u00fdch m\u011bst, m\u016f\u017eete u\u017e v\u00a0t\u011bchto dnech vyhl\u00ed\u017eet pom\u011brn\u011b v\u00fdrazn\u00fd sv\u011bteln\u00fd ku\u017eel, sahaj\u00edc\u00ed do v\u00fd\u0161e a\u017e 60\u00a0\u00b0 nad obzor, kde se nach\u00e1z\u00ed hv\u011bzdokupa Plej\u00e1dy v\u00a0souhv\u011bzd\u00ed B\u00fdka, a\u00a0to v\u00a0dob\u011b, kdy je Slunce ji\u017e d\u00e9le ne\u017e hodinu pod obzorem (tedy kolem 19:00\u00a0SE\u010c a\u00a0pozd\u011bji), popisuj\u00ed Petr Hor\u00e1lek a\u00a0Tom\u00e1\u0161 Gr\u00e1f z\u00a0opavsk\u00e9ho Fyzik\u00e1ln\u00edho \u00fastavu.<\/p>\n

Po setm\u011bn\u00ed nevysoko nad obzorem, v\u00a0nejjasn\u011bj\u0161\u00ed \u010d\u00e1sti b\u011blav\u00e9ho ku\u017eele, najdeme tak\u00e9 planetu Venu\u0161i.<\/p>\n

P\u0159\u00edsp\u011bvek studenta od Queen<\/p>\n

Nezvykl\u00fd a\u00a0neostr\u00fd ku\u017eel sv\u011btla z\u00e1\u0159\u00edc\u00ed zpoza obzoru na jinak hv\u011bzdami poset\u00e9 obloze, viditeln\u00fd po soumraku nad z\u00e1padn\u00edm obzorem \u010di naopak p\u0159ed rozb\u0159eskem na v\u00fdchod\u011b, nem\u011bl dlouh\u00e1 l\u00e9ta jasn\u00e9 v\u011bdeck\u00e9 vysv\u011btlen\u00ed.<\/p>\n

S n\u00edm pravd\u011bpodobn\u011b p\u0159i\u0161el jako prvn\u00ed a\u017e italsk\u00fd astronom Giovanni Domenico Cassini (1625\u20131712), kter\u00fd v\u00a0roce 1683\u00a0zm\u00ednil teorii o\u00a0rozptylu slune\u010dn\u00edho sv\u011btla na \u010d\u00e1stic\u00edch prachu. Jin\u00e9 zdroje tvrd\u00ed, \u017ee za vysv\u011btlen\u00edm jevu stoj\u00ed \u0161v\u00fdcarsk\u00fd matematik Nicolas Fatio de Duillier (1664\u20131753), kter\u00fd sv\u00e9 pr\u00e1ce vydal v\u00a0roce 1684.<\/p>\n

Foto: Milan Mal\u00ed\u010dek, Pr\u00e1vo<\/p>\n

Brian May ze skupiny Queen<\/p>\n

V\u00fdznamn\u011b se o\u00a0popis \u00fakazu zasadil Brian May (nar. 1947), astrofyzik a\u00a0kytarista rockov\u00e9 skupiny Queen. Ten za\u010dal ps\u00e1t svou dizerta\u010dn\u00ed pr\u00e1ci o\u00a0zv\u00ed\u0159etn\u00edkov\u00e9m sv\u011btle b\u011bhem sv\u00fdch studi\u00ed na Imperial College London (Kr\u00e1lovsk\u00e1 univerzita v\u00a0Lond\u00fdn\u011b) na p\u0159elomu 60.\u00a0a\u00a070.\u00a0let minul\u00e9ho stolet\u00ed. Zab\u00fdval se v\u00a0n\u00ed r\u016fzn\u00fdmi rychlostmi \u010d\u00e1stic v\u00a0pra\u0161n\u00e9m disku, kter\u00fd d\u00edky rozptylu slune\u010dn\u00edho z\u00e1\u0159en\u00ed zv\u00ed\u0159etn\u00edkov\u00e9 sv\u011btlo zp\u016fsobuje.<\/p>\n

Pak se ale kari\u00e9ra skupiny Queen rychle rozjel a\u00a0May musel studium p\u0159eru\u0161it. K\u00a0dokon\u010den\u00ed pr\u00e1ce se dostal a\u017e mnohem pozd\u011bji\u00a0\u2013 v\u00a0roce 2007\u00a0ji aktualizoval a\u00a0\u00fasp\u011b\u0161n\u011b doktor\u00e1t obh\u00e1jil.<\/p>\n

<\/a><\/a><\/p>\n

Nejlep\u0161\u00ed obdob\u00ed pro pozorov\u00e1n\u00ed zv\u00ed\u0159etn\u00edkov\u00e9ho sv\u011btla potrv\u00e1 asi do jarn\u00ed rovnodennosti 20.\u00a0b\u0159ezna. Pot\u00e9 M\u011bs\u00edc sv\u00fdm svitem zodiak\u00e1ln\u00ed sv\u011btlo op\u011bt p\u0159ez\u00e1\u0159\u00ed. Zv\u00ed\u0159etn\u00edkov\u00e9 sv\u011btlo bude mo\u017en\u00e9 pozorovat je\u0161t\u011b od 3.\u00a0do 19.\u00a0dubna, ale jeho sklon v\u016f\u010di obzoru se bude pomalu zmen\u0161ovat, tak\u017ee viditelnost jevu u\u017e nebude tak dobr\u00e1. Rady, jak \u00fakaz co nejl\u00e9pe vyfotit, zmi\u0148uj\u00ed odborn\u00edci na webu opavsk\u00e9ho \u00fastavu<\/a>.<\/p>\n

Za ide\u00e1ln\u00edch podm\u00ednek, kter\u00e9 panuj\u00ed t\u0159eba ve vysokohorsk\u00fdch oblastech v\u00a0Chile, je mo\u017en\u00e9 spat\u0159it nejen ku\u017eel zodiak\u00e1ln\u00edho sv\u011btla, ale je\u0161t\u011b slab\u0161\u00ed tzv. zodiak\u00e1ln\u00ed most spojuj\u00edc\u00ed v\u00fdchodn\u00ed a\u00a0z\u00e1padn\u00ed zodiak\u00e1ln\u00ed ku\u017eely, \u010di jasn\u011bj\u0161\u00ed m\u00edsto v\u00a0zodiak\u00e1ln\u00edm most\u011b zvan\u00e9 zodiak\u00e1ln\u00ed protisvit. Ten le\u017e\u00ed na opa\u010dn\u00e9 stran\u011b ne\u017e Slunce a\u00a0\u010d\u00e1stice meziplanet\u00e1rn\u00ed hmoty tam rozptyluj\u00ed nejv\u00edce sv\u011btla.<\/p>\n

Foto: Petr Hor\u00e1lek, Tom\u00e1\u0161 Slovinsk\u00fd\/NOIRLab\/AURA<\/p>\n

Panorama p\u00e1su zv\u00ed\u0159etn\u00edkov\u00e9ho sv\u011btla (vpravo a\u00a0vlevo), zodiak\u00e1ln\u00edho mostu a\u00a0protisvitu proti dokonale tmav\u00e9 obloze na Havaji a\u00a0v Chile<\/p>\n

<\/a><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Zv\u00ed\u0159etn\u00edkov\u00e9 \u010di zodiak\u00e1ln\u00ed sv\u011btlo je slune\u010dn\u00ed sv\u011btlo rozpt\u00fdlen\u00e9 na \u010d\u00e1stic\u00edch meziplanet\u00e1rn\u00ed hmoty. Tyto \u010d\u00e1stice s\u00a0rozm\u011bry \u0159\u00e1dov\u011b 0,001\u00a0\u2013 0,1\u00a0mm…\n","protected":false},"author":2,"featured_media":22319,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_share_on_mastodon":"0"},"categories":[7],"tags":[2727,10802,43,42,41,40,10801,10803,1540,10800],"class_list":["post-22318","post","type-post","status-publish","format-standard","has-post-thumbnail","category-cesko","tag-astronomie","tag-brian-may","tag-ceska-republika","tag-cesko","tag-czech-republic","tag-czechia","tag-slezska-univerzita-v-opave-su","tag-svetelne-znecisteni","tag-vesmir","tag-zviretnikove-svetlo"],"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@cz\/116217092777091486","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/22318","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/comments?post=22318"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/posts\/22318\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media\/22319"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/media?parent=22318"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/categories?post=22318"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/cz\/wp-json\/wp\/v2\/tags?post=22318"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}