Question

an image taken from a space telescope shows a galaxy far away from earth. the galaxy emits red light. what does the red light indicate about the galaxy? the galaxy is moving away from earth as the universe expands. the galaxy is moving closer to earth as the universe contracts. the galaxy is relatively old because all the stars in the galaxy produce a red color. the galaxy is relatively young because all the stars in the galaxy produce a red color.

Explanation:

The red shift (red light from the galaxy) is a phenomenon where light from an object moving away from an observer is shifted towards the red end of the spectrum. This is due to the expansion of the universe, so a galaxy emitting red light (showing red shift) indicates it is moving away from Earth as the universe expands. The other options are incorrect: the universe is expanding (not contracting), and the color of light from stars doesn't directly indicate the age of the galaxy based on the reasoning in the options.

Answer:

The galaxy is moving away from Earth as the universe expands.