Dark matter is essential in understanding the formation of the large-scale structure in the universe in that it
A) was clumpier than normal matter in the early universe.
B) consists exclusively of antimatter particles.
C) has a repulsive effect, just like the dark energy.
D) explains the physics of black holes.
E) cannot be made of elementary particles.

Question

Quizplus · Accepted Answer

Dark matter was clumpier than normal matter in the early universe, which helped in the formation of galaxies and large-scale structures by providing gravitational wells for normal matter to fall into.

Dark Matter Is Essential in Understanding the Formation of the Large-Scale