Spiral galaxies
A) were present during the Big Bang.
B) formed immediately after recombination.
C) formed at the same time as the first stars.
D) took some time to form, after the first stars appeared.
E) can have existed only for the last billion years or so.

Question

Quizplus · Accepted Answer

Spiral galaxies took some time to form after the first stars appeared, as they are complex structures that developed over time through processes like the merging of smaller galaxies and the accumulation of gas and dust.

Spiral Galaxies