Which of the following is true of the expansion of the universe if there is no dark energy?
A)The expansion rate will increase
B)The expansion rate will decrease
C)The expansion rate will remain constant
D)The expansion rate will first increase and then decrease

Question

Quizplus · Accepted Answer

If there is no dark energy, the expansion rate of the universe would slow down due to the gravitational attraction between galaxies. This is because the mass density of the universe acts as a brake on the expansion. In the absence of dark energy, the expansion rate would decrease over time.

Which of the Following Is True of the Expansion of the Universe