Density waves may explain:
A)the lack of blue stars in the Galactic halo.
B)the random orbits of Galactic halo stars.
C)the density of red stars in the Galactic bulge.
D)the spiral arm structure of the Galaxy.
E)the large number of open clusters in the Galactic halo.

Question

Quizplus · Accepted Answer

Density waves are thought to be responsible for the spiral arm structure of the galaxy. Density waves are thought to explain the spiral arm structure of the Galaxy.

Density Waves May Explain