What is microlensing?
A) A minute shift in the apparent position of a star as an object passes in front of it
B) A slow brightening of a star as an object passes in front of it
C) The temporary disappearance of a star as an object passes in front of it
D) A gradual reduction in brightness of a star as an object passes in front of it

Question

Quizplus · Accepted Answer

Microlensing occurs when the gravitational field of a massive object (like a planet or a star) passing in front of a distant star acts as a lens, magnifying the light of the distant star. This results in a temporary increase in the star's brightness, not a shift in position, disappearance, or reduction in brightness.

What Is Microlensing