Multiple Universes

The existence of multiple universes sounds like science fiction, but observations within theoretical physics suggest it is possible, and potentially inevitable. A key question in this speculative scenario is whether there is a finite or infinite number of universes in the multiverse. In any case, what we know so far indicates that, even if there is an infinite number of universes in the multiverse, what happens in them is in no way related to what happens in our own universe.