Question

Using Hubble's Law, how would you determine the distance to a galaxy which is moving away at a velocity of 3,500 km/s? (Assume H = 70km/s/Mpc)

Answer 1

Answer:

Distance in mega parsec = Recession velocity / H = 50 mega parsec.

Explanation:

1 parsec = 2.E+05 AU, nearly. 50 mega parsec = 1. E+13 AU, nearly. 1 mega means E+06 (million).