The proof of the existence of parallel universes has long been hindered by the core issue of "unobservable and difficult to ...

"Some people conflate parallel universes with jumping through a portal into another world, or something like that," Matthew Johnston, a physicist at the Perimeter Institute, told Business Insider.

The proof of the existence of parallel universes has long been hindered by the core issue of "unobservable and difficult to ...

One version of parallel universes that cosmologists consider is the so-called ‘Multiverse,’ which is a consequence of the dominant theory of cosmic genesis known as inflation.

"Some people conflate parallel universes with jumping through a portal into another world, or something like that," Matthew Johnston, a physicist at the Perimeter Institute, told Business Insider.

Why did the valet hate being in a parallel universe? Because it was all parallel parking! A parallel universe is one of the favorite subjects of fiction writers. There are numerous books, films, video ...

While parallel universes are a staple of science fiction, there are some real scientific theories to support them. But if parallel universes do exist, could we ever travel to them? It certainly ...

If a parallel universe existed consisting of so-called "mirror particles," however, the neutrons could temporarily swap places with its invisible twin before returning to its rightful place in ...