Ever since Part 1 premiered, Chilling Adventures of Sabrina has kept coy about how exactly the series is related to Riverdale. Both Archie Comics-inspired shows make frequent nods to one another, but ...

There may be another universe just a millimeter away from ours, hovering in an extra, hidden dimension. At any moment this second universe (or “membrane,” in M-theory—a relative of superstring theory) ...

Scientists have come up with theories about parallel universes that are so wild they’d make the most creative science fiction writers feel jealous. The idea that there are other worlds exactly like ...