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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 ...

Student astronomer finds galactic missing matter

Half of the universe's matter is 'missing', but a PhD student has developed an ingenious method to help track it down. She has done this using distant galaxies as 'locator pins' to detect an otherwise 'invisible' cold clump of gas just 10 light years from Earth.

from Space & Time News -- ScienceDaily https://ift.tt/3d5gvI6

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