How would you use the Hubble Law to measure the distance to a galaxy?
A)Measure its apparent recession velocity and divide by the age of the universe.
B)Measure its Cepheid variables and multiply by the Hubble constant.
C)Measure its apparent recession velocity and divide by the Hubble constant.
D)Measure its apparent recession velocity and add it to the Hubble constant.

Question

Quizplus · Accepted Answer

The Hubble Law states that the recessional velocity of a galaxy is proportional to its distance from us. Therefore, by measuring the apparent recession velocity of a galaxy and dividing it by the Hubble constant (which is an estimate of the proportionality factor), we can calculate its distance. This is known as the cosmological redshift distance calculation.

How Would You Use the Hubble Law to Measure the Distance