Cosmology and quantum physics both offer tantalizing possibilities that we inhabit just one reality among many. But testing that idea is challenging.

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

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 another one might be even better suited for life. Here’s what you’ll learn when you read ...

Google's latest breakthrough in quantum computing, the Willow chip, is reigniting discussions among the scientific community about the possibility of parallel universes. Hartmut Neven, the founder and ...

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 ...

Chinese researchers are poring over a puzzling gravitational wave signal that appears to defy the standard script of black hole collisions, reviving one of physics’ most audacious possibilities: that ...