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 ...

Our universe does host life, but it’s not the most optimal universe for life. Published in 1962 by American astronomer Frank ...

Parallel universes crop up in two places in physical ... which means it should exist. Perhaps time travel into the past is forbidden for exactly these reasons, according to Stephen Hawking's ...

Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of what the universe looked like in the moments before it rapidly changed ...

The oceanic in much contemporary fiction is the place of multispecies belonging and new becomings, and decentres the human ...

Vanderbilt University physicist Lorenzo Gavassino isn't so sure this is as big an obstacle as time-traveler pessimists have ...