StrikeZone1000 t1_j5r7qbv wrote on January 25, 2023 at 12:11 AM

GPS launched 1978, Galileo 2011

Commotion t1_j5rspdl wrote on January 25, 2023 at 2:42 AM

True, but the oldest GPS satellite that is still operational was launched in 1997.

apeowl OP t1_j5ub954 wrote on January 25, 2023 at 4:55 PM

Also, 16 of the 31 GPS satellites that are currently operational have actually been launched after the start of Galileo in October 2011. Also, they get software updates from time to time.