Hints of a mirror cosmos have a way of gripping the imagination, and recent chatter about “first proof” of a parallel ...

Below, Halpern shares five key insights from his new book, The Allure of the Multiverse: Extra Dimensions, Other Worlds, and Parallel Universes. Listen to the audio version—read by Halpern himself—in ...

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 ...