[quote=Balance]
Here's an analogy used to describe how that woks.Imagine an inflated balloon filled with ants. Of course they want to explore that balloon so they'll be moving outward. You are a stationary ant, and you can only see two-dimensionally. So it looks like all your fellow ants are moving away indefinitely even though they're really going around the outline.We see three-dimensionally, but the universe is four-dimensional. It looks like everything is moving outward indefinitely, but they're really moving along the surface of the inflating balloon that is our expanding universe. What is the universe expanding into? Nothing. Only itself.
[/quote]

That's absolutely the dumbest thing I've ever heard. First of all, I'm quite hesitant to believe anything I can't observe. Second, we have no idea how the universe works, nor have a way to find out.