The galactic halo or corona is believed to contain mostly
A)O and B stars.
B)G, K, and M stars.
C)open clusters.
D)globular clusters.
E)dark matter.

Question

Quizplus · Accepted Answer

The galactic halo or corona is believed to contain mostly dark matter. This is because the observed mass and gravitational effects on visible matter in the halo are much greater than can be accounted for by visible matter alone.

The Galactic Halo or Corona Is Believed to Contain Mostly