The expansion of the Universe ____.
A) was faster in the early Universe when galaxies were close to each other, and has decelerated thereafter
B) was slower in the early Universe when galaxies were close to each other, and has accelerated thereafter
C) has been constant throughout the lifetime of the Universe
D) steadily accelerated from the big bang to the present day
E) steadily decelerated from the big bang to the present day

Question

Quizplus · Accepted Answer

The expansion of the Universe was indeed slower in the early stages after the Big Bang when galaxies were closer together. It has been accelerating over time, a discovery that led to the 2011 Nobel Prize in Physics. This acceleration is attributed to dark energy.

The Expansion of the Universe ____