s*****t 发帖数: 1994 | 1 M17: Omega Nebula Star Factory
Credit & Copyright: Jean-Charles Cuillandre (CFHT), Hawaiian Starlight, CFHT
Explanation: In the depths of the dark clouds of dust and molecular gas known as M17, stars
continue to form. The similarity to the Greek letter capital Omega gives the molecular cloud
its popular name, but the nebula is also known as the Swan Nebula, the Horseshoe Nebula, and
M17. The darkness of these molecular clouds results from background starlight being
absorbed by thick carbon-b |
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