As NASA and the China National Space Agency plan missions to Mars, one major concern is how the planet’s weaker gravity will affect astronauts. A recent study sheds light on the potential risks, ...

Thanks to Einstein’s relativity, time flows differently on Mars than on Earth. NIST scientists have now nailed down the difference, showing that Mars clocks tick slightly faster—and fluctuate over the ...

Floating around in microgravity inside a spacecraft might look like fun, but it can do nasty things to your body. With the current enthusiasm for crewed space flight and particularly NASA’s plan to ...

Ask someone on Earth for the time and they can give you an exact answer, thanks to our planet's intricate timekeeping system, built with atomic clocks, GPS satellites and high-speed telecommunications ...

Add Yahoo as a preferred source to see more of our stories on Google. Mars has less gravity and possesses and eccentric solar orbit, making it difficult to calculate time differences. For all intents ...

NASA's Psyche spacecraft tested its instruments at Mars in May 2026, gaining speed toward an asteroid. NASA’s Psyche ...