We expect the galaxies that we see at a redshift of 4 (that is,when the universe was much younger)will be ________ than galaxies today.
A) more irregular and redder
B) larger and redder
C) smaller and bluer
D) smaller and redder

Question

Quizplus · Accepted Answer

The galaxies that we see at a redshift of 4 are likely to be smaller and bluer than galaxies today. This is because at that time, the universe was still undergoing rapid star formation, and galaxies had not yet had time to grow and merge into larger structures. Additionally, the light from these galaxies has been redshifted due to the expansion of the universe, which makes them appear bluer than they would if we observed them today.

We Expect the Galaxies That We See at a Redshift