The Hubble 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.

Question

Quizplus · Accepted Answer

The Hubble constant represents the rate of expansion of the universe. This value is used to determine how fast the distance between galaxies is increasing over time. It is measured in units of kilometers per second per megaparsec.

The Hubble Constant,H₀,represents