Add Yahoo as a preferred source to see more of our stories on Google. While parallel universes are a staple of science fiction, there are some real scientific theories to support them. But if parallel ...

If true, the idea would blow past one of physics’ most sacred limits: that parallel versions of reality can never talk to ...

This universe is getting to be a lot. As if troubling political trends, climate change, and a rising billionaire class weren’t bad enough, the space beyond our little blue planet is equally full of ...

For more than a century, physicists have suspected that the familiar three dimensions of space and one of time might be only a sliver of reality. Extra dimensions, if they exist, would not just be a ...

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 wouldn ...