Don't mistake Galaxy for Universe. Also, I doubt that we'd ever break away from this universe (why would we). Since the laws of physics only apply inside our spacetime, going outside would probably destroy anything (spaceships, humans, particles).
A normal human being can only travel on the 3 axises of space, and we can only go in one direction in time. If you'd like to go "outside" the universe, you'd have to move in a 4th axis, just like you have to move up to leave the Earth's surface.
Also, what? You are speaking like a narrator from some lame science fiction movie.