Coalsack

Coal·sack

C0433400 (kōl′săk′)n.1. A dark nebula, one of the nearest to Earth, that appears in the southern Milky Way.2. A similar dark nebula in the Northern Hemisphere near the constellation Cygnus.

coalsack

(ˈkəʊlˌsæk) na sack in which coal is carried

Coal•sack

(ˈkoʊlˌsæk)

n. 1. a dark nebula in the Southern Cross. 2. Northern Coalsack. [1625–35]

Coalsack

enUK

Coalsack:

see Milky WayMilky Way,
the galaxy of which the sun and solar system are a part, seen as a broad band of light arching across the night sky from horizon to horizon; if not blocked by the horizon, it would be seen as a circle around the entire sky.
..... Click the link for more information. .

Coalsack

(kohl -sak) (Southern Coalsack) A prominent dark nebula about 170 parsecs away in the southern constellation Crux. It has an angular diameter of 6° and can be seen with the naked eye as a completely black shape silhouetted against the background of the Milky Way.

Coalsack

[′kōl‚sak] (astronomy) An area in one of the brighter regions of the Southern Milky Way which to the naked eye appears entirely devoid of stars and hence dark with respect to the surrounding Milky Way region.

单词	coalsack
释义	Coalsack enUK Coal·sack C0433400 (kōl′săk′)n.1. A dark nebula, one of the nearest to Earth, that appears in the southern Milky Way.2. A similar dark nebula in the Northern Hemisphere near the constellation Cygnus. coalsack (ˈkəʊlˌsæk) na sack in which coal is carried Coal•sack (ˈkoʊlˌsæk) n. 1. a dark nebula in the Southern Cross. 2. Northern Coalsack. [1625–35] Coalsack enUK Coalsack: see Milky WayMilky Way, the galaxy of which the sun and solar system are a part, seen as a broad band of light arching across the night sky from horizon to horizon; if not blocked by the horizon, it would be seen as a circle around the entire sky. ..... Click the link for more information. . Coalsack (kohl -sak) (Southern Coalsack) A prominent dark nebula about 170 parsecs away in the southern constellation Crux. It has an angular diameter of 6° and can be seen with the naked eye as a completely black shape silhouetted against the background of the Milky Way. Coalsack [′kōl‚sak] (astronomy) An area in one of the brighter regions of the Southern Milky Way which to the naked eye appears entirely devoid of stars and hence dark with respect to the surrounding Milky Way region. ThesaurusSeeMilky Way
随便看	plvef plvfd plvi plvic plvl plvrr plvs plvsc plvsp plvt plvts plvwt plw plwa plwc pl wess plwg plwh plwha plwha (sa) plwhiv plwiz plwm plwp plwps