Hubble's constant,H0,represents:
A) the rate of expansion of the universe
B) the speed at which galaxies are moving away from us
C) the time it takes a galaxy to move twice as far away from us
D) the size of the universe
Correct Answer:
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Q2: Astronomers have known that galaxies are separate
Q23: Why are some galaxies' spectra blueshifted rather
Q24: Galaxies move away from us in all
Q26: According to Hubble's law,as the distance of
Q31: Which of the following lists distance indicators
Q32: If you measured the distances and recessional
Q37: If the distance of a galaxy at
Q38: Astronomers use galactic redshift as a measure
Q39: The inverse of the value of H0
Q44: The current temperature of the cosmic
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