The History of the GPS System

The GPS system works with a minimum of 24 satellites. The oldest one up there is 25 years old and the rest are all newer than that. When they get decommissioned, sometimes they get like, if they're totally dead, they shove it way further out. Sometimes though, the satellite's getting a bit old, but they're like, there's still, there still would work. So we have got a bunch of like spare ones going around,. as long as there's 24 or more, it all works.