Doing the persnickety calculations of how fast clocks tick on Mars relative to Earth, two scientists have discovered that ...

Mars clocks tick 477 microseconds faster per Earth day, complicating future missions and interplanetary timekeeping.

The most precise timekeepers ever made, atomic clocks, might one day help robotic and crewed missions on Mars stay in sync ...

Time moves differently on Mars — not in the Tibetan philosophy sense of the word, but in a measurable, physics-will-ruin-your-mission kind of way that's giving NASA engineers a real headache. As the ...