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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 ...

Could the Apollo 11 moon landing be duplicated today? 'Lots of luck with that'

The passage of half a century has blurred many of the reasons that the United States was able to accomplish what seemed like science fiction: the July 20, 1969, landing of Apollo 11 on the moon.

from Space Exploration News - Space News, Space Exploration, Space Science, Earth Sciences https://ift.tt/2lBgLpG

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