Ariane 5 Mission VA240

Europe's Ariane 5 rocket is set to rumble off from South America on Tuesday to carry into orbit the next four Galileo Navigation Satellites, expanding the constellation toward fully operational services.

Ariane 5 is set for liftoff at precisely 18:36:07 UTC, embarking on a three-hour and 56-minute climb into an orbit nearly 23,000 Kilometers in altitude, sending the four 715-Kilogram satellites off in pairs into Plane A of the growing Galileo Constellation.