Olbers' paradox is an apparently simple question, but its resolution suggests that the universe is finite in age. What is the question?
A)Can we measure the position and momentum of an electron at the same time?
B)Why is the sky dark at night?
C)How many stars are in the universe?
D)What would it be like to ride on a beam of light?

Question

Quizplus · Accepted Answer

Olbers' paradox asks why the sky is dark at night if the universe is infinite and filled with an infinite number of stars. One would expect that every line of sight should eventually reach a star, making the sky uniformly bright. The resolution to this paradox is that the universe is not infinite in age, and that the light from stars beyond a certain distance has not yet reached us. This supports the idea of a finite universe that began at a finite time in the past.

Olbers' Paradox Is an Apparently Simple Question, but Its Resolution