[SauronOfMordor]

What I was trying to ask is this: Let’s assume you are standing at the “edge” that you mentioned. What would you “see” if you looked outward? If you’re seeing more space ahead, then it still means that the entire universe (not just the material universe) is infinite, and not just very big.

The surface of the Earth has no edge, yet the surface of the Earth is finite in area

Space is curved, and it looks like space is closed, and has a finite amount of mass.

[CarrotAndStick]

Space is curved, and it looks like space is closed, and has a finite amount of mass.

Say this space is the Earth's surface. What happens when a "spaceship" pierces out of it, or attempts to do so?

Will it disappear at the boundary and re-appear at the diametrically opposite boundary, like in some of those video games?