What do we need to know in order to predict whether the expansion of the universe will continue forever?
A)The curvature of space
B)The age of the universe and the speed of light
C)The lifetime of the proton and the distance to the Virgo cluster
D)The temperature of the cosmic background radiation and the age of the universe

Question

Quizplus · Accepted Answer

The curvature of space determines whether the expansion of the universe will continue forever or eventually collapse back on itself. If the curvature is flat or positively curved, the universe will continue to expand forever, while if it is negatively curved, it will ultimately collapse. The other options listed are not directly relevant to this prediction.

What Do We Need to Know in Order to Predict