Which Universe Are We In? The most dangerous idea in science might turn out to be true: we live in a multiverse of truly infinite proportions. The universe we live in may not be the only one out there. In fact, our universe could be just one of an infinite number of universes making up a "multiverse The first 'hard evidence' that other universes exist has been found by scientists. Laura Mersini-Houghton, theoretical physicist at the University of North Carolina at Chapel Hill, and Richard Holman, professor at Carnegie Mellon University, predicted that anomalies in radiation existed and were caused by the pull from other universes in 2005.