Time really does move faster on Mars, but the breakthrough that confirms it did not come from a spacecraft’s stopwatch.

On Earth, knowing the time feels simple. Your phone pings the same second as a GPS satellite and an atomic clock in a lab. Everything is wired together so well that you rarely think about the ...

Research conducted by two physicists from the National Institute of Standards and Technology (NIST) in the US reveals that clocks on Mars tick 477-millionths of a second (or 477 microseconds) faster ...

Off Earth, identical atomic clocks won’t agree; gravity, motion and relativity make time flow differently, so Earth and Mars ...