Multiple Choice
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
Correct Answer:
Verified
Correct Answer:
Verified
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