Multiple Choice
The Hubble law, representing observations of distant galaxies in the universe, relates which two parameters?
A) mass of a distant galaxy and its luminosity
B) luminosity of a distant galaxy and the width of the 21-cm radio line of hydrogen
C) distance to a distant galaxy and its recession velocity
D) mass of a distant galaxy and its recession velocity
Correct Answer:

Verified
Correct Answer:
Verified
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