So recently in physics class, we were talking about relativity and theoretical physics, and String Theory came up. Naturally, I was intrigued by this topic, and so I researched the topic a bit. Basically here is the run down:
In physics, particles can be replaced by one dimension things called "Strings." These strings propagate through space and time to interact with each other. A string is basically a quantum particle that carries a gravitational force, and therefore is Quantum gravity. Quantum gravity uses Einstein's theory of gravity using quantum mechanics. Furthermore, I watched a video on string theory where it related the creation and fission of different universes to string theory. the video compared a universe to a bubble, and we are tiny, tiny bugs on this giant bubble. A universe could form in two different ways: through either the collision of two different universes forming a new one, or the fission of one universe into two. The forming of our universe is what we have come to know as the Big Bang. This implies that if there is a multiverse of universes, we could travel to different ones. In order to accomplish this task, theoretically, we would need to use a wormhole to take a shortcut to another universe. A great example of a wormhole is to bend a piece of paper and stick a pencil through it. A wormhole is similar in that it bends space and time to create a shortcut.