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

Apple TV's sci-fi thriller Dark Matter stars Joel Edgerton in a captivating dual role, offering a refreshing take on ...

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 ...

For five seasons, the ambitious sci-fi series Sliders tackled the idea of a multiverse long before the MCU.