Multiple Choice
What is microlensing?
A) minute shift in the apparent position of a star as a massive object passes in front of it
B) temporary brightening of a star as a massive object passes in front of it
C) temporary disappearance of a star as a massive object passes in front of it
D) gradual reduction in brightness of a star as a massive object passes in front of it
Correct Answer:

Verified
Correct Answer:
Verified
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