Astronomers often speak of redshift z rather than distance d. If the speeds are a small fraction of the speed of light, the relationship between d and z is:

Question

Quizplus · Accepted Answer

The relationship between redshift (z) and distance (d) in the context of the expanding universe, for speeds much less than the speed of light, is given by Hubble's Law, which is d = zc/H₀, where c is the speed of light and H₀ is the Hubble constant. This corresponds to option D.

Astronomers Often Speak of Redshift Z Rather Than Distance D