GPS uses Quasars to work
The Global Positioning System (GPS) is precise.
That precision originates in a mind-blowing place!
GPS signals tell billions of people where they are each day.
GPS helps pilots land planes and captains steer ships.
GPS signals stamp locations onto millions of photos per minute.
GPS gives you driving directions.
But, where does GPS get its own GPS?
The GPS for GPS
How does GPS know where a GPS satellite is?Click here to continue reading…