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Mars and Earth - Small difference & big consequences

Einstein's theory of relativity suggests that time is not a constant and can vary based on gravitational fields and speed. In a strong gravitational field, time moves slower compared to a weaker one. Since Mars has a weaker gravitational field than Earth, time actually flows slightly faster there.  This concept has implications for future space missions, as the timing of communication and operation of spacecraft will need to account for this difference in how time elapses on Mars compared to Earth. Missions may need to adjust their schedules, operations, and technology to ensure accuracy and synchronization with Earth. Basically, the moment you bring gravity and velocity into the picture, time stops behaving like the simple, universal tick‑tock we experience in everyday life. And you’re absolutely right: Mars’ weaker gravity means clocks there run a little faster than clocks on Earth. What’s fascinating is how small the difference is—and how big the consequences become ...

Engineers test an idea for a new hovering rover

MIT aerospace engineers are testing a concept for a hovering rover that levitates by harnessing the moon's natural charge. The design uses tiny ion beams to charge up the vehicle and the surface underneath, with little power needed. Such an ion boost could be strong enough to levitate a 2-pound vehicle on the moon and large asteroids.

from Space & Time News -- ScienceDaily https://ift.tt/3pfsIj7

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