Can the laws of physics bring something into existence?

[Surgenator]

Guys, is it possible for matter/antimatter to join and create nothing?
Or will we always have an energy release in the positive direction.

matter + antimatter = positive energy
positive energy + gravity = 0

If any type of exotic matter/energy entity together with its antimatter equivalent "can" ever exist together, even for an immeasurably small amount of time, this combination could be seen to be "nothing". So nothing can be created from notthing. Think of it like (+1-2+1). (Insert atoms with their anti equivalents) although they effectively cancel out to nothing, they are not. These phenomenons are created randomly from nothing. Just another jigsaw in our wonderfully complex existence.

I haven't actually read Hawking's book, but this is in essence what Hawking is referring to according to my cosmo friends.

Remember, there is only existence. It has no negative.
Is the universe expanding? Into where? It can't expand to someplace which can't store void can it?

Yes the universe is expanding. "Into where" is a loaded question. The universes boundary is getting bigger that is what they mean by it is expanding. It doesn't necessarily mean that it is taking over some other entity's space.