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

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

Artificial intelligence researcher and US Air Force Captain Eric Halloway recently published a fun thought experiment showing how simple it would be to prove we live in one of multiple universes. His ...

Pick up any science fiction book from the 1960s, and you’ll find parallel dimensions explained through magic portals or mysterious machines that work “just because.” Today’s readers want stories that ...

Using a superconducting quantum computer, physicists created a large and complex version of an odd quantum material that has ...