Mark Zuckerberg's metaverse seems like a parallel universe, but what is the metaverse? What is the mulitverse? Immersive worlds and parallel worlds explained.

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 ...

Can we find a gateway to a parallel universe? Another major project for the particle-smashing LHC is to search for tiny black holes, which might be gateways to parallel universes and new dimensions.

Whether other universes are membranes floating in space, or a quirk of quantum mechanics, this is how physicists think we’ll traverse the multiverse.

"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.

I need a vacation to a parallel universe where black holes are manageable. While I won’t find refuge in this reality, I can in the pages of these fantasy and sci-fi books about parallel universes.

Physics theories can get pretty hairy, but don’t worry: If our universe isn’t the only one—if in fact there are an infinite number of universes out there—then in at least one of them you ...