All right, so Frank wants to talk more about wormholes. Apparently, it's a still unclear theory. The first kind discovered was a Schwarzschild wormhole, but that kind can't stay open long enough for anyone (or anything, for that matter) to pass through. It's basically an 'eternal black hole' not the kind of thing you'd want to even try to use. They say that the only kind of wormhole that you can actually go through would 'only be possible if exotic matter with negative energy density could be used to stablise them'. Of course that could only be happen in nature if the Casimir effect pans out, so we won't expect any to occur naturally (except very small ones that might appear through the use of quantum foam).
Now that that's been said, let me tell you that I don't have any idea what I'm talking about. I just get to be the middle man, relaying info from Frank. Hopefully somewhere out there are some physicists who will understand some of what I just said.
Well, I'm keeping it short this time, due to all the mumbo jumbo Frank keeps dishing out.