Kdy vypad\u00e1 mlhovina jako kometa? V tomto hust\u011b os\u00eddlen\u00e9m hv\u011bzdn\u00e9m poli, kter\u00e9 se rozprost\u00edr\u00e1 na plo\u0161e v\u00edce ne\u017e dvou stup\u0148\u016f v r\u00e1mci vysoko polo\u017een\u00e9 souhv\u011bzd\u00ed Labut\u011b (Cygnus), upout\u00e1 pozornost mlhovina Kokon. Kosmick\u00fd Kokon, kompaktn\u00ed oblast tvorby hv\u011bzd, tvo\u0159\u00ed jasnou mlhovinu s emisn\u00edm i reflexn\u00edm z\u00e1\u0159en\u00edm v prav\u00e9m doln\u00edm rohu, s dlouhou stopou mra\u010den mezihv\u011bzdn\u00e9ho prachu vlevo, d\u00edky \u010demu\u017e cel\u00fd komplex pon\u011bkud p\u0159ipom\u00edn\u00e1 kometu. Mlhovina, katalogizovan\u00e1 jako IC 5146, m\u00e1 centr\u00e1ln\u00ed jasnou hlavu o rozp\u011bt\u00ed p\u0159ibli\u017en\u011b 10 sv\u011bteln\u00fdch let, zat\u00edmco tmav\u00fd prachov\u00fd ocas se t\u00e1hne t\u00e9m\u011b\u0159 100 sv\u011bteln\u00fdch let. Ob\u011b \u010d\u00e1sti se nach\u00e1zej\u00ed ve vzd\u00e1lenosti asi 2 500 sv\u011bteln\u00fdch let. Jasn\u00e1 hv\u011bzda pobl\u00ed\u017e st\u0159edu barevn\u00e9 mlhoviny pravd\u011bpodobn\u011b dod\u00e1v\u00e1 energii a pom\u00e1h\u00e1 vy\u010distit dutinu. Dlouh\u00e1 prachov\u00e1 vl\u00e1kna ocasu, a\u010dkoli jsou na tomto sn\u00edmku ve viditeln\u00e9m sv\u011btle tmav\u00e1, skr\u00fdvaj\u00ed hv\u011bzdy v procesu vzniku. P\u0159edstaven\u00fd sn\u00edmek byl po\u0159\u00edzen v \u010dervenci z \u00dadol\u00ed smrti v Kalifornii v USA. Hlavn\u00ed str\u00e1nka APODu na webu NASA se st\u011bhuje: Z adresy apod.nasa.gov na science.nasa.gov\/apod<\/p>\n
<\/p>\n
**Credit**: Piotr Czerski<\/p>\n","protected":false},"excerpt":{"rendered":"
Kdy vypad\u00e1 mlhovina jako kometa? V tomto hust\u011b os\u00eddlen\u00e9m hv\u011bzdn\u00e9m poli, kter\u00e9 se rozprost\u00edr\u00e1 na plo\u0161e v\u00edce ne\u017e dvou stup\u0148\u016f v r\u00e1mci vysoko polo\u017een\u00e9 souhv\u011bzd\u00ed Labut\u011b (Cygnus), upout\u00e1 pozornost mlhovina […]<\/p>\n","protected":false},"author":1,"featured_media":4084,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4083","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\/4083","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=4083"}],"version-history":[{"count":0,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts\/4083\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media\/4084"}],"wp:attachment":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media?parent=4083"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/categories?post=4083"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/tags?post=4083"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}