This is an oversimplified summary. The field of quantum physics is well beyond my skill set, but as I understand it, when observers look at quantum level particles (smaller than protons or electrons) they notice that Newtonian physics no longer applies. The way these particles move, shift, shimmy, or shake can change natural laws. This has led some theorists to believe in the concept of the multiverse.
Basically, every possible movement of a quantum particle exists at the same time somewhere. That means that for every possible position, there is another universe. As there are an infinite number of possible movements in any given instant, there are an infinite number of universes with an infinite number of possibilities. This is the multiverse.
With an infinite number of possibilities, anything that could happen has happened in one of them. With an infinite number of universes, in at least one of them an all-powerful creator could exist, and thus does exist. In short, science says that God exists.