What causes stars to twinkle?
A)It is intrinsic to the stars-their brightness varies as they expand and contract.
B)variations in the absorption of the atmosphere
C)variable absorption by interstellar gas along the line of sight to the star
D)bending of light rays by turbulent layers in the atmosphere
E)the inability of the human eye to see faint objects

Question

Quizplus · Accepted Answer

Stars appear to twinkle because their light passes through many turbulent layers in the Earth's atmosphere, which causes the light to refract and bend many times. This effect is known as atmospheric scintillation.

What Causes Stars to Twinkle