Whether the universe is open, closed or flat depends, on the ____ of the universe.

Question

Quizplus · Accepted Answer

The curvature of the universe is determined by its density. If the density is greater than a critical value, the universe is closed and has a positive curvature, meaning it has a finite size and will eventually collapse. If the density is less than the critical value, the universe is open and has a negative curvature, meaning it has an infinite size and will continue to expand indefinitely. If the density is exactly equal to the critical value, the universe is flat, meaning it has zero curvature and an infinite size.

Whether the Universe Is Open, Closed or Flat Depends, on the ____