Does Alternate Universes Exist?

Brian Greene: A Physicist Explains 'The Hidden Reality' Of Parallel Universes It is possible that there are many other universes that exist parallel to our universe. Theoretical physicist Brian Greene, author of The Elegant Universe, explains how that's possible in the new book, The Hidden Reality.

How many alternate universes are there?

One obvious question that arises, then, is exactly how many of these parallel universes might there be. In a new study, Stanford physicists Andrei Linde and Vitaly Vanchurin have calculated the number of all possible universes, coming up with an answer of 10^10^16.

Does multiverse exist?

As it stands, the multiverse exists outside our current scientific understanding of reality. Theoretical physics suggests a multiverse is a hypothetical grouping of multiple universes.