Based on the information and diagram, which statement best describes the way galaxies move through space over time?

By taking careful measurements, scientists have determined that the universe is expanding over time. Individual components of the universe, such as galaxies, continue to travel through space. This concept is sometimes represented by a balloon as shown below. Each dot on the balloon represents a part of the universe, such as a galaxy.

Based on the information and diagram, which statement best describes the way galaxies move through space over time?
A . northward
B . westward
C . northwest
D . farther apart
E . closer together

View Answer

Answer: D