re: The edge of the Universe could be exploding and we wouldn’t know it

quote:

---

And it's expanding faster and faster and we don't know why.

---

My theory as to why this is happening is because the universe is finite (think bubble) and as more and more material collects the against barrier between universes, the gravitational force increases, so things aren't expanding faster and faster because they being pushed, they are being pulled.
Now what happens, is when the material in one universe and the material in the adjoining universe become thick enough, the barrier between them collapses resulting in a "Big Bang" and we start over.