What on Earth is the Global Positioning System?
Dec. 26, 2018 | BY Claudette Roulo
GPS is everywhere—on your phone, in your car, even on your wrist—but what the heck even is it and how does it work?
GPS is short for Global Positioning System. It’s a satellite-based navigation system that helps people find their precise location on Earth.
Before GPS, navigation involved paper maps or very specialized tools like sextants and chronometers. Now, satellites orbiting the Earth 12,000 miles up can guide pizza delivery drivers to your house before the cheese cools.
https://www.defense.gov/explore/story/Article/1674004/what-on-earth-is-the-global-positioning-system/
