________ are small dark nebulae about 1 light-year in diameter that contain 10 to 1,000 solar masses.
A)HI regions
B)HII regions
C)Emission nebulae
D)Bok globules
E)Reflection nebulae

Question

Quizplus · Accepted Answer

Bok globules are precisely described as small, dense, and cold clouds of gas and dust, which are often seen in silhouette because they absorb visible light from background stars behind them. They were first discovered by astronomer Bart Bok in the 1940s.

________ Are Small Dark Nebulae About 1 Light-Year in Diameter