No, space doesn't have an edge or a boundary.
While the universe's size is a topic of ongoing research and debate, the consensus is that it does not have a physical end in the sense of a wall, barrier, or border. The absence of an edge doesn't automatically imply infinite size, but rather suggests that if the universe is finite, it could be curved in a way that looping around itself is possible. Think of it like the surface of a sphere – you can travel indefinitely without ever reaching an edge.
Here's a breakdown:
- No Physical Boundary: There is no known physical structure that marks the "end" of space. Observations and cosmological models strongly suggest the absence of any edge to the universe.
- Finite but Unbounded: It's possible for the universe to be finite in size but without a boundary. A common analogy is the surface of a sphere. You can travel indefinitely on the surface of a sphere without ever encountering an edge. Similarly, space could be curved in such a way that it "wraps" around on itself.
- Infinite Possibility: It is also possible that the universe is infinite. In this case, there's simply no "end" to space.
In summary, current understanding indicates that space lacks an edge or boundary, whether the universe is finite or infinite.
