The further away a galaxy is:
A)the older it is.
B)the further ahead in the future it will exist.
C)the longer ago it existed.
D)the larger it appears.
E)the more massive it is.

Question

Quizplus · Accepted Answer

The farther away a galaxy is, the longer it takes for its light to reach us here on Earth. Therefore, we are seeing the galaxy as it existed in the past, meaning that the galaxy existed longer ago. The further away a galaxy is, the longer ago it existed. This is because the light from the galaxy takes time to travel to us and the older its distance, the older its light. This is why telescopes are often used to study the oldest, most distant galaxies in our universe.

The Further Away a Galaxy Is