Question

Which statement accurately describes how the understanding of the Doppler effect is applied to the study of galaxies? It was used by Hubble to measure the velocities of galaxies. It was used to monitor galaxy motion through changes in sound waves. It indicates a galaxy moving toward Earth through red shift. It indicates a galaxy moving away from Earth through blue shift.

Answer 1

We have that  the Doppler effect is applied to the study of galaxies indicates a galaxy moving toward Earth through red shift.

Option C

The Doppler effect is applied to the study of galaxies

Generally, astronomers gets to know how fast stars and galaxies are moving away or towards us by measuring the  light divergence into the lower frequency, in the spectrum we look at the red part

Therefore, It indicates a galaxy moving toward Earth through red shift.

Option C

For more information on Earth

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