Because the moon has less gravity than Earth does, time passes slightly differently there. This effect was first predicted by ...

The way in which time progresses on the Moon is becoming increasingly relevant as both countries push toward their next lunar ...

Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that describe gravity, quantum fields and the structure of spacetime now allow ...

Time is often treated as constant, but Einstein showed that it isn’t. Speed and gravity both affect how fast time moves, and ...

Tracking time is one of those things that seems easy, until you really start to get into the details of what time actually is. We define a second as 9,192,631,770 oscillations of a cesium atom.