Understanding the Universe: An Introduction to Astronomy, 2nd Edition Season 1 Episode 81 When Geometry Is Destiny
- October 19, 2023
- 31 min
According to general relativity, the fate of the Universe is tied to its global geometry. If the Universe has positive curvature, like a sphere, it must eventually collapse in a "Big Crunch." If it is flat or has negative curvature, however, it will expand forever.