Cosmic Rays can Help Keep the World's Clocks in Sync

The world has a robust, accurate timekeeping system that regulates our clocks. Humanity uses it for everything we do, from our financial systems to satellite navigation, computer and phone networks, and GPS. But the current system is not perfect, and has vulnerabilities to cyber-attack and disruption. Given the importance of accurate timekeeping to our society (as a fundamental underpinning of life in the 21st century), experts are always looking for ways to improve the system and add redundancy. Researchers at the University of Tokyo have taken a big step in this direction, developing a new method of time synchronization that takes advantage of cosmic rays to calibrate the world’s clocks.

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