Which of the following does NOT happen when two galaxies collide?
A) large interstellar gas clouds collide
B) the rate of star formation increases
C) the shape of the galaxy is often changed
D) many of the stars in one galaxy collide with the stars in the other
E) a smaller galaxy may wind up inside a larger one

Question

Quizplus · Accepted Answer

Many of the stars in one galaxy do not collide with the stars in the other during a galactic collision. The galaxies are mostly made up of empty space, and the stars in each galaxy are so far apart that they are unlikely to physically collide. However, the gravitational interactions between the galaxies can cause some stars to be flung out of their original orbits, and some stars may end up in new orbits around the merged galaxies.

Which of the Following Does NOT Happen When Two Galaxies