In the strange world of quantum mechanics, objects can exist in several states at once. This concept, called superposition, is one of the most puzzling features of quantum theory. A particle, for ...

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

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Science’s best guess at how the universe came into being includes the Big Bang ...

Given how unfathomably large the universe is, it is perhaps understandable that we haven’t yet cracked all its secrets. But there are actually some pretty basic features, ones we used to think we ...