The main difference between Bright and Dark Nebulae is ________.
A)the composition of their gases
B)the composition of their dust
C)their proximity to a black hole
D)their proximity to a blue star
E)none of the above

Question

Quizplus · Accepted Answer

Bright nebulae are illuminated by nearby stars, often blue stars, which cause them to glow, while dark nebulae do not have nearby stars to illuminate them and appear as dark patches against the background of brighter regions.

The Main Difference Between Bright and Dark Nebulae Is ________