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

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 ...

The MCU’s journey into the multiverse has firmly established one principle: for nearly every individual, there are infinite variants across infinite realities. We’ve seen this play out with Loki, ...

Movie multiverses are incredibly popular right now, but you probably didn't know about the one from the 1990s featuring ...