Stephen Hawking pushed off of this mortal coil last week, but the world-famous physicist was pondering some of humanity's most puzzling questions right up until the end. Hawking spent decades of his ...

In fiction and in films such as Spiderman: Into the Spider-Verse, parallel universes – also called the multiverse – exist alongside our own, with anything from small differences in events to entirely ...

Do we live in a multiverse? Daydreamers and science-fiction authors have pondered parallel universes for as long as scientists have described our own. Our universe contains everything we know — from ...