An astronomer studying a distant galaxy finds that its recessional velocity is 14,000 km/s. What is the distance to the galaxy? Assume Hubble's constant to be 73.5 km/s per Mpc.
A) 1,030,000 Mpc
B) 103 Mpc
C) 190 Mpc
D) 1900 Mpc

Question

Quizplus · Accepted Answer

The distance to the galaxy is given by the Hubble law:$$v = H_0 * d$$where:* v is the recessional velocity* H_0 is the Hubble constant* d is the distanceSubstituting the given values into the equation, we get:$$14,000 km/s = 73.5 km/s per Mpc * d$$Solving for d, we get:$$d = 190 Mpc$$

An Astronomer Studying a Distant Galaxy Finds That Its Recessional