Every 19 years, the Global Positioning System resets a measure of time built into its program. The latest rollover is Saturday and NPR's Scott Simon asks cybersecurity expert Frank Cilluffo about it.

/ The Undependable Global Positioning System does not believe in God, because it believes in satellites and in particle physics and entrepreneurship. / Use at your own risk, you tourists of oblivion.

To learn more about how GPS calculations are done, check out “How Global Positioning Systems Work” by Ron White and Tim Downs. You’ll find some useful and informative diagrams, too.

Galileo, a European rival to military global positioning systems operated by the United States and Russia, will be able to locate objects or people to within 16.4 ft. (5 m).

The Global Positioning System (GPS) is a technology that can provide location inputs to a GIS system, to be added to other inputs such as satellite imagery and topographic maps.

He worked to develop an atomic clock that is essential to global positioning systems and helped confirm a rare state of matter predicted based on work by Albert Einstein. By Dylan Loeb McClain The ...

One of the fundamental technologies of modern gadgets is the Global Positioning System (GPS). Using signals from satellites orbiting the earth, a GPS receiver can pin down its location with remarka… ...

New cutting-edge science into how lightning affects Earth’s upper atmosphere could help the U.S. military fend off hostile GPS (global positioning system) attacks, say researchers at the ...

The Global Positioning System (GPS) is a system of 24 satellites developed by the US Air Force and first made available for civilian use in 1990.