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 ...

WHAT would you rather believe in, God or the multiverse? It sounds like an instance of cosmic apples and oranges, but increasingly we are being told it’s a choice we must make. Take the dialogue ...

Is there evidence for the existence of an enormous number of other universes? In 1987, Steven Weinberg wrote a cute little paper entitled “Anthropic Bound on the Cosmological Constant”. Weinberg was ...

Could parallel universes exist? If so, what would they look like and how would they form? Video by Greg Kestin; article by Charles Choi. Receive emails about upcoming NOVA programs and related content ...

When you think about the Universe, most people think about the vastest depths of space, to the limits of what humanity has ever observed, and of everything that ever was or will be. But even with as ...