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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 ...

Spring on Pluto: An analysis over 30 years

Whenever it passes in front of a star, Pluto provides precious information about its atmosphere, precious because occultations by Pluto are rare. The survey achieved by researchers from Paris Observatory over several decades of observations appears in the journal Astronomy and Astrophysics of May 10, 2019. Interpreted in the light of data collected in 2015 by the probe New Horizons, it allows them to refine physical parameters that are essential for a better understanding of Pluto's climate and to predicting future stellar occultations by the dwarf planet.

from Space Exploration News - Space News, Space Exploration, Space Science, Earth Sciences http://bit.ly/2W6g34i

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