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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 ...

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A 1-Stage, Fully Reusable Lunar Lander Makes the Most Sense for Returning Humans to the Moon

It's been more than 50 years since humans first set foot on the Moon, but we haven't been back since the Apollo era. As NASA develops the Artemis program, it's considering ways to return to the Moon... and stay there. That means developing flight hardware that can be reused. A recent study considered a dozen proposals for lunar landing systems and settled on a one-stage lunar lander that's completely reusable. This vehicle would act as a ferry, carrying astronauts to and from the Lunar Gateway to the surface of the Moon.

Read the full story by Matt Williams

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