Multiple Choice
What is microlensing?
A) the minute shift in the apparent position of a star as an object passes in front of it
B) the 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) the gradual reduction in brightness of a star as an object passes in front of it
Correct Answer:
Verified
Correct Answer:
Verified
Q18: In 1785, William Herschel proposed that the
Q104: The central "engine" of an active galaxy
Q124: What useful purpose did variable stars serve
Q346: Quasars all appear to be:<br>A) extremely massive
Q349: Which object typically has the greatest luminosity?
Q350: How can astronomers determine the size of
Q352: Suppose we could examine a star and
Q353: Quasars have now been detected in which
Q354: Who won the Shapley-Curtis debate when it
Q356: What important role do Cepheid variables stars