What do astronomers mean when they say that the universe is homogeneous?
A) The number of galaxies, averaged over large scales, is the same at any distance from Earth.
B) There are no mass concentrations anywhere in the universe.
C) The universe is static and unchanging.
D) At any given time, the universe looks the same in all directions.

Question

Quizplus · Accepted Answer

The universe being homogeneous means that, on a large scale, the distribution of matter (such as galaxies) is uniform, so the number of galaxies is roughly the same in any large volume of space, regardless of location.

What Do Astronomers Mean When They Say That the Universe