Collisions between galaxies are thought to:
A)have stopped about 5 billion years ago.
B)be commonplace.
C)have never occurred.
D)be extremely rare.
E)have only occurred between 10 and 15 billion years ago.

Question

Quizplus · Accepted Answer

Collisions between galaxies are believed to be commonplace. It is estimated that the Milky Way will collide with the Andromeda galaxy in about 4.5 billion years. Collisions between galaxies are thought to be commonplace. While they may be rare on a human timescale, in the vastness of the universe, they happen frequently.

Collisions Between Galaxies Are Thought To