How do the youngest,most distant galaxies compare with the older galaxies we see closer to us today?
A) The youngest galaxies are bluer and brighter than the older ones.
B) The youngest galaxies have the same color as the older ones but are significantly brighter.
C) There is no observable difference between the youngest galaxies and the older ones.
D) The youngest galaxies are redder and fainter than the older ones.

Question

Quizplus · Accepted Answer

The youngest galaxies are often known as "primeval galaxies" and are bluer and brighter than the older galaxies we see closer to us today. This is because they contain hot, young stars that emit a lot of blue light. As galaxies age, their stars begin to run out of fuel and fade, leading to a redder appearance.

How Do the Youngest,most Distant Galaxies Compare with the Older