According to Hubble's Law, the greater a galaxy's redshift, the:
A)closer it is to us.
B)younger it is.
C)faster it's approaching us.
D)farther it is from us.
E)greater its mass.

Question

Quizplus · Accepted Answer

According to Hubble's Law, the greater a galaxy's redshift, the farther it is from us. This is because redshift is caused by the Doppler effect, which occurs when an object is moving away from us, causing the wavelength of its light to shift towards the red end of the spectrum. The farther away a galaxy is, the faster it appears to be moving away from us and the greater its redshift. Hubble's Law states that the farther away a galaxy is, the faster it appears to be moving away from us, which is represented by an increase in its redshift. Therefore, the greater a galaxy's redshift, the farther away it is from us.

According to Hubble's Law, the Greater a Galaxy's Redshift, The