A galaxy at a distance of 100 Mpc is receding at 6000 km/s.How far away is a galaxy that is receding at 24,000 km/s?

Question

Quizplus · Accepted Answer

The velocity of a galaxy receding from us is directly proportional to its distance, according to Hubble's Law (v = H0 * d). If a galaxy 100 Mpc away is receding at 6000 km/s, a galaxy receding at 24,000 km/s (4 times the velocity) would be 4 times as far, making it 400 Mpc away.

A Galaxy at a Distance of 100 Mpc Is Receding