Hubble's constant, H0, represents the
A) rate of expansion of the universe.
B) speed at which galaxies are moving away from us.
C) time it takes a galaxy to move twice as far away from us.
D) size of the universe.
E) amount of time since the Solar System formed.
Correct Answer:
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Q15: Distant Galaxy A has a larger redshift
Q16: That "the physical laws and the properties
Q17: Galaxies move away from us in all
Q18: As measured from Earth, the spectrum of
Q19: Astronomers use galactic redshift as a measure
Q21: Galaxy peculiar velocities are typically about 300
Q22: Cosmological redshift is redshift due to
A) the
Q23: If the distance of a galaxy is
Q24: The inverse of the value of H0
Q25: You observe the following three galaxies and
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