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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 ...

Habitable Zone and Possible Super-Earth

Possible Super-Earth in the Habitable Zone at Alpha Centauri

This could be huge news or turn out to be nothing more than a spot of dust in a telescope sensor. Astronomers working with the Very Large Telescope think they've seen a hint of a planet orbiting around nearby Alpha Centauri. Better yet, this planet might actually be orbiting within the star's habitable zone. Wow. Even if the discovery doesn't hold up to more in-depth scrutiny, astronomers have developed powerful new techniques to push their telescopes to observe fainter and fainter objects.

Read the full story by Evan Gough

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