What if suddenly your Google Maps stops working, the location signal on your phone disappears, airplanes go astray and military missiles fail to reach their targets? This sounds like a science fiction movie. But the truth is that today’s world has become so dependent on navigation satellites that if they stop working, many important things from mobile phones to missile systems can come to a standstill. Now the question arises that how do these navigation satellites work? Which countries in the world have their own GPS system? And most importantly – where does India stand in this race?
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