An astronomer discovers a region of space in which all the galaxies have peculiar motions away from a central point.This region is:
A) a void.
B) a filament.
C) a supercluster.
D) fully explained by the Hubble flow.

Question

Quizplus · Accepted Answer

A void is a large region in space that contains very few galaxies, causing the galaxies at the edge of the void to have peculiar motions away from the central, nearly empty region.

An Astronomer Discovers a Region of Space in Which All