Most of the mass of the Milky Way is in the form of
A) stars
B) gas clouds
C) black holes
D) dark matter

Question

Quizplus · Accepted Answer

Most of the mass of the Milky Way is thought to be in the form of dark matter, which is a type of matter that does not interact with light and therefore cannot be directly observed. Although stars and gas clouds contribute to the total mass of the galaxy, they are estimated to make up only a small fraction of the total mass. Black holes also contribute to the mass of the galaxy, but they are typically much less massive than the stars and gas clouds in the galaxy.

Most of the Mass of the Milky Way Is in the Form