Most of the mass of the Milky Way seems to exist in the form of
A) the black hole in the Galactic Center.
B) dark matter out in the Halo.
C) hydrogen gas in the disk and spiral arms.
D) population II stars in the Halo.
E) population I stars in the disk.

Question

Quizplus · Accepted Answer

Most of the mass of the Milky Way is thought to exist in the form of dark matter, which is located primarily in the halo surrounding the galaxy. This dark matter does not emit, absorb, or reflect light, making it invisible and detectable only through its gravitational effects on visible matter, radiation, and the large-scale structure of the universe.

Most of the Mass of the Milky Way Seems to Exist