Ji\u017en\u00ed koruna (Corona Australis) osl\u0148uje mlad\u00fdmi i prastar\u00fdmi nebesk\u00fdmi klenoty. Mra\u010dno Corona Australis je kol\u00e1\u017e\u00ed reflexn\u00edch a emisn\u00edch mlhovin, kter\u00e9 se nach\u00e1zej\u00ed v lev\u00e9 \u010d\u00e1sti dne\u0161n\u00edho sn\u00edmku. Tento mrak, vzd\u00e1len\u00fd 430 sv\u011bteln\u00fdch let, pat\u0159\u00ed k oblastem tvorby hv\u011bzd nejbli\u017e\u0161\u00edm Zemi. Obsahuje plyn dostate\u010dn\u011b chladn\u00fd (-260 \u00b0C nebo -440 \u00b0F), aby se v n\u011bm mohly zformovat protohv\u011bzdy. Ned\u00e1vno vznikl\u00e9 hv\u011bzdy zbarvuj\u00ed mrak do modra, kdy\u017e se jejich sv\u011btlo odr\u00e1\u017e\u00ed od okoln\u00ed hmoty. Val\u010d\u00edk dvojhv\u011bzdn\u00e9ho syst\u00e9mu R Coronae Australis rozv\u00ed\u0159\u00ed mlhovinu NGC 6729. Mlad\u0161\u00ed z dvojice ionizuje sv\u00fdm ultrafialov\u00fdm z\u00e1\u0159en\u00edm okoln\u00ed plyn, \u010d\u00edm\u017e ho rozz\u00e1\u0159\u00ed. Vpravo naho\u0159e vis\u00ed hv\u011bzdokupa \u201eLustr\u201c (NGC 6723), kter\u00e1 je v\u0161ak ve skute\u010dnosti o des\u00edtky tis\u00edc sv\u011bteln\u00fdch let d\u00e1le ne\u017e jej\u00ed zd\u00e1nliv\u00fd soused, v n\u011bm\u017e vznikaj\u00ed hv\u011bzdy. Zat\u00edmco v NGC 6723 prob\u011bhlo n\u011bkolik obdob\u00ed tvorby hv\u011bzd, p\u0159i nich\u017e vznikly o n\u011bco mlad\u0161\u00ed hv\u011bzdy, v \u201eLustru\u201c blikaj\u00ed hv\u011bzdy t\u00e9m\u011b\u0159 stejn\u011b star\u00e9 jako vesm\u00edr.<\/p>\n
<\/p>\n
**Credit**: NASA<\/p>\n","protected":false},"excerpt":{"rendered":"
Ji\u017en\u00ed koruna (Corona Australis) osl\u0148uje mlad\u00fdmi i prastar\u00fdmi nebesk\u00fdmi klenoty. Mra\u010dno Corona Australis je kol\u00e1\u017e\u00ed reflexn\u00edch a emisn\u00edch mlhovin, kter\u00e9 se nach\u00e1zej\u00ed v lev\u00e9 \u010d\u00e1sti dne\u0161n\u00edho sn\u00edmku. Tento mrak, vzd\u00e1len\u00fd […]<\/p>\n","protected":false},"author":1,"featured_media":3972,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3971","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-nasa"],"_links":{"self":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts\/3971","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/comments?post=3971"}],"version-history":[{"count":0,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts\/3971\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media\/3972"}],"wp:attachment":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media?parent=3971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/categories?post=3971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/tags?post=3971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}