If Space is a vacuum with nothing in it, then what would the edge of the universe even mean

Question

…it would be a ‘border’ between nothing and nothing?

In: Planetary Science

Answer 1

The “edge” of the universe is the edge of what we can see. This is an oversimplification, but because the Big Bang happened about 14 billion years ago, we can only see things that are closer than 14 billion light years away. Because for anything further out, the light hasn’t had time to reach us yet.

The edge is just the border of what’s observable. What’s beyond the edge? There’s no way to know. But it’s almost certainly just more stars and galaxies and stuff. Maybe it goes on infinitely in every direction; maybe it doesn’t. We cannot make claims about unobservable phenomena.