2.) The Universe, is actually composed of everything that ever existed, exists, and will ever exist. This is how it is possible for the Universe to be infinite as it somehow creates a loop. How we are in an organized time stream I do not know. If we weren't in a continuous time stream then the time stream would collapse and time itself wouldn't exists. Therefore we would coexists with everything that did/does/will exists. And going off theory, putting our minds into some form of subconsciousness where nothing and everything is there. This brings up all sorts of parody's, but it's my theory.
3.) (Going off other theories). There are actually microatomic particles in space which create the structure in Space as we know it. It is these that allow Einsteins worm hole formula to work, even though it is unstable. Our current technology cannot see these particles, and possibly never will. If we ever were to leave the limits of the Universe, these microatomic particles would cease to exist past the boundary and therefore either causing us to implode, or be erased from existence altogether. It is these same particles that could cause the wormhole to collapse therefore not allowing instantaneous transfer which is thought possible through the travel through a wormhole if stable, which could be the cosmic way of keeping us in our time stream, and keeping order in the Universe.
4.) It is thought that the Universe is actually something called Dark Matter, which has no definite composition and so can expand forever. It could be that these same particles if any that make up dark matter allow for black holes, worm holes, white holes, and every unexplainable anomaly that is out their. Dark matter can't be traced due to it's lack of electromagnetic radiation, but it is thought that it is because it is not composed of molecular particles, but microatomic particles (see theory 3). So these particles don't emit any radiation whatsoever.
