Explainer: What is an atomic clock and why it is crucial for navigation satellites

Launched aboard the PSLV–C32, ISRO’s workhorse, and successfully placed into geosynchronous orbit on March 10, 2016, it was ...
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NASA’s 2016 atomic clock launch is key in enabling deep space expeditions

Accurately measuring time is as an integral a part of space exploration as it is in naval navigation. Like in the days of yore when determining longitude depended on knowing the difference between the ...