How did the first galaxies in the Universe differ from those around us today?
A) They were all elliptical.
B) They produced more red light.
C) They had more heavy elements.
D) They were much less massive.

Question

Quizplus · Accepted Answer

The first galaxies in the Universe were much less massive than galaxies around us today. This is because they formed just a few hundred million years after the Big Bang, when there were fewer heavy elements available to form stars and galaxies. As a result, the first galaxies were smaller and contained fewer stars than galaxies today.

How Did the First Galaxies in the Universe Differ from Those