GPS Satellite Clock Adjustments: Global Positioning System satellites must account for both special and general relativistic time dilation. Orbiting at high speeds and lower gravity, their atomic clocks gain about 38 microseconds daily compared to Earth. Without correction, GPS accuracy would drift kilometers per day. Engineers pre-adjust clock frequencies before launch, proving relativity’s real-world impact. This continuous, operational “time travel” ensures synchronization between moving satellites and ground observers. It’s not science fiction—it’s essential engineering. The GPS network stands as a permanent, large-scale validation of Einstein’s theories, demonstrating that precise timekeeping across space requires relativistic time adjustments.
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