Tento jisk\u0159iv\u00fd, barevn\u00fd drahokam je spir\u00e1ln\u00ed galaxie NGC 300. Jedn\u00e1 se o jednu z galaxi\u00ed nejbl\u00ed\u017ee Zemi, vzd\u00e1lenou pouh\u00fdch asi 6 milion\u016f sv\u011bteln\u00fdch let. Ale vypad\u00e1 opravdu takto? Zde je jej\u00ed b\u011b\u017en\u011bj\u0161\u00ed sn\u00edmek. Tento neobvykl\u00fd sn\u00edmek kombinuje sv\u011btlo hv\u011bzd a prachu uvnit\u0159 galaxie se sv\u011btlem ionizovan\u00fdch mra\u010den mezihv\u011bzdn\u00e9ho plynu, kter\u00e9 jsou zobrazeny \u010derven\u011b (s\u00edra), zelen\u011b (vod\u00edk) a mod\u0159e (kysl\u00edk). Kombinace \u010derven\u00e9ho a zelen\u00e9ho sv\u011btla v r\u016fzn\u00fdch pom\u011brech vytv\u00e1\u0159\u00ed \u017elut\u00e9 nebo oran\u017eov\u00e9 sv\u011btlo, kter\u00e9 je na sn\u00edmku nejviditeln\u011bj\u0161\u00ed. Sv\u011btlo z jin\u00fdch ionizovan\u00fdch plyn\u016f se vyu\u017e\u00edv\u00e1 tak\u00e9 v neonov\u00fdch n\u00e1pisech, z\u00e1\u0159ivk\u00e1ch a pouli\u010dn\u00edm osv\u011btlen\u00ed. Tyto mohutn\u00e9 mraky ionizovan\u00e9ho plynu obvykle vytv\u00e1\u0159ej\u00ed mlad\u00e9, hmotn\u00e9 hv\u011bzdy, kter\u00e9 produkuj\u00ed vysoce energetick\u00e9 ultrafialov\u00e9 z\u00e1\u0159en\u00ed schopn\u00e9 plyn ionizovat. Masivn\u00ed hv\u011bzdy maj\u00ed ve srovn\u00e1n\u00ed s leh\u010d\u00edmi hv\u011bzdami, jako je na\u0161e Slunce, kr\u00e1tkou \u017eivotnost a na konci sv\u00e9ho \u017eivota exploduj\u00ed jako supernovy. N\u011bkter\u00e9 z barevn\u00fdch mrak\u016f na sn\u00edmku by mohly skr\u00fdvat zbytky supernov.<\/p>\n
<\/p>\n
**Credit**: Team Ciel Austral
\n Text:
\nCecilia Chirenti
\n(NASA
\nGSFC,
\nUMCP,
\nCRESST II)<\/p>\n","protected":false},"excerpt":{"rendered":"
Tento jisk\u0159iv\u00fd, barevn\u00fd drahokam je spir\u00e1ln\u00ed galaxie NGC 300. Jedn\u00e1 se o jednu z galaxi\u00ed nejbl\u00ed\u017ee Zemi, vzd\u00e1lenou pouh\u00fdch asi 6 milion\u016f sv\u011bteln\u00fdch let. Ale vypad\u00e1 opravdu takto? Zde je […]<\/p>\n","protected":false},"author":1,"featured_media":3960,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3959","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\/3959","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=3959"}],"version-history":[{"count":0,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/posts\/3959\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media\/3960"}],"wp:attachment":[{"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/media?parent=3959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/categories?post=3959"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/astrohodonin.cz\/index.php\/wp-json\/wp\/v2\/tags?post=3959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}