Multiple Choice
What method would astronomers use to find the distance to a galaxy so far away that individual stars are impossible to make out (resolve) ?
A) parallax
B) Cepheid variables
C) using the x-ray emission from the entire galaxy
D) finding the red?shift and using Hubble's Law
E) the turnoff point of the main sequence on an H-R diagram
Correct Answer:
Verified
Correct Answer:
Verified
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