Thomas Mulligan examines the groundbreaking experiments where researchers measured the warping of time by dropping atoms nearly fifty meters.

Time seems to be one of the most obvious things in the universe: it moves forward, seconds change minutes, and the past ...

Time already behaves strangely in modern physics. It can stretch, slow, and split depending on speed and gravity. Now a new theoretical study pushes that weirdness into even stranger territory. It ...

Despite more than a century of efforts to show otherwise, it seems Albert Einstein can still do no wrong. Or at least that’s the case for his special theory of relativity, which predicts that time ...