system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If the universe is finite, does that mean that it has some kind of an edge? If yes, what happens if we "theoretically" cross that edge?
gpt
The observable universe is finite, and the “edge” is the maximum distance we have seen. It’s not  definitively possible that humanity could reach that eventually, but we’d be observing more of the universe as we approached and moving our metaphorical edge further away.

Whether the whole of the universe is finite or not isn’t known. We don’t have concrete evidence of the shape of the universe, or if the universe even has a shape. It goes on and on past anything we can observe or measure, and is constantly expanding. Unless something changes on the literally universal level, we can never find the edge of the universe, or prove that it even exists.