Time on Mars differs from Earth

Researchers have developed a time measurement system tailored for Mars, which is crucial for future space missions. This system is based on Einstein's theory of general relativity, which predicts that time flows at different rates depending on gravitational strength.

Time is not the same everywhere

What we call a second is not a universal constant. When far from Earth, this unit of time changes due to the effects of gravity and motion. Until now, scientists had not been able to precisely determine how much time differs on Mars.

Earth's time is measured with precision

On Earth, we use highly accurate clocks, often based on quantum mechanics, to measure time. These clocks operate at a stable but local rhythm. However, when moving away from Earth, this rhythm changes because of gravitational differences. Einstein predicted that gravity slows time, and clocks run faster in weaker gravitational fields.

Mars time varies irregularly

A team from the National Institute of Standards and Technology (NIST) aimed to test this concept for Mars. Using general relativity and data on Mars' orbit, they found that time on Mars is not only slightly different from Earth's but also varies in an irregular way.