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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 ...

Whispers from the dark side: What can gravitational waves reveal about dark matter?

Researchers recently captured the first signs of very low-frequency gravitational waves. They analyzed the data and considered the possibility of whether this may point towards new physics beyond the Standard Model. They report that the signal is consistent with both a phase transition in the early universe and the presence of a field of extremely light axion-like particles (ALPs).

from Space & Time News -- ScienceDaily https://ift.tt/38ZA3v1

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