Multiple Choice
An astronomer needs to measure the distance to a globular cluster of stars that is part of the Milky Way Galaxy. What method should she try to use to find the distance?
A) measure the parallax of the cluster
B) count the number of O and B type stars in the cluster
C) look for flickering x-rays coming from a black hole in a binary star system in the cluster
D) measure the red-shift of the cluster
E) find a variable star (cepheid or RR Lyrae) in the cluster
Correct Answer:
Verified
Correct Answer:
Verified
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