Galileo navigation satellites buttoned up for launch on Ariane 5 rocket

Technicians working in the jungle of French Guiana have installed four new European Galileo navigation satellites on top of their Ariane 5 launcher, and filled the rocket’s upper stage with storable liquid propellants for liftoff Tuesday. The satellite quartet will join 18 others already in space to build out Europe’s Galileo fleet, an independent civilian-run analog to the U.S. Air Force’s Global Positioning System and the Russian military’s Glonass network. Liftoff of the Ariane 5 rocket is set for an instantaneous launch opportunity at 1836:07 GMT (1:36:07 p.m. EST; 3:36:07 p.m. French Guiana time) Tuesday. More

(Source: SpaceFlight Now - Dec 10)