Question

When observed from Earth, some stars appear red. What is the cause of redshift?

A.The star is at rest relative to Earth.

B. The star is in a very distant location and is moving away from Earth.

C. The star is moving toward Earth at decreasing speed.

D. The star is moving toward Earth at increasing speed.

Answer 1

B

Step-by-step explanation:

This is the discovery of redshift that led scientist to say the universeis still expanding