Hubble's law states that galaxies are receding from us at a speed that is proportional to ________.
A)their distance
B)their mass
C)their luminosity (absolute magnitude)
D)their age

Question

Quizplus · Accepted Answer

Hubble's law states that the speed at which galaxies move away from us is proportional to their distance. This is known as the Hubble constant, and it has been determined through observational evidence that the value of this constant is approximately 70 km/s per megaparsec.

Hubble's Law States That Galaxies Are Receding from Us at a Speed