What do halo stars do differently from disk stars?
A)They orbit the galactic center with many different inclinations, while disk stars all orbit in nearly the same plane.
B)They remain stationary, quite unlike disk stars that orbit the galactic center.
C)They orbit the center of the galaxy at much lower speeds than disk star.
D)Halo stars explode as supernovae much more frequently than disk stars.

Question

Quizplus · Accepted Answer

Halo stars have orbits with many different inclinations, while disk stars orbit in nearly the same plane. This is because halo stars formed earlier in the history of the Milky Way and were not subject to the same forces that caused the gas and dust in the disk to flatten into a rotating disk.

What Do Halo Stars Do Differently from Disk Stars