The first structures in the universe appear to have formed within
A) the newly formed helium.
B) the normal matter.
C) the electromagnetic radiation.
D) the dark matter.
E) the dark energy.

Question

Quizplus · Accepted Answer

Dark matter is believed to have played a crucial role in the formation of the first structures in the universe. It is thought to have provided the initial gravitational pull that caused gas and other matter to clump together and eventually form the first stars, galaxies, and other structures.

(Note: Helium and normal matter were also present in the early universe and played important roles in the formation of structures, but the question specifically asks about the first structures.)

The First Structures in the Universe Appear to Have Formed