system
Given the following post, respond as if you're commenting on Reddit:
human
What really is at the edge of the universe?
gpt
Almost every cosmologist believes that there is no edge, and this question is precisely why. There just isn't anything we could put as the boundary to the universe that would make physical sense under our current theories. You can define mathematical surfaces that are bounded, but mathematical surfaces don't have to worry about trying to conserve energy and momentum when something bumps the boundary.