Multiple Choice
What method is used to determine the distances of very remote galaxies?
A) use of their spectral redshifts and the Hubble law
B) measurement of the angular size of the galaxy and an assumption about the actual physical size of the galaxy
C) measurement of the apparent brightness and period of Cepheid variable stars within the galaxies
D) comparison of their apparent and absolute magnitudes
Correct Answer:
Verified
Correct Answer:
Verified
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