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

Hints of a mirror cosmos have a way of gripping the imagination, and recent chatter about “first proof” of a parallel universe has pushed that fascination back into the spotlight. Behind the viral ...

Recent discoveries have reignited excitement and curiosity in the scientific community, suggesting the possible existence of parallel universes. Scientists are delving into evidence and theories ...