Live coverage: Ariane 5 blasts off with two Intelsat satellites

Two ion-driven communications satellites launched from Cape Canaveral on March 1 have begun novel maneuvers using electric propulsion to reach operating posts 22,300 miles over the equator.

The United Launch Alliance Delta 4 rocket sits peacefully inside its mobile service gantry on Tuesday afternoon, one day before its scheduled launch of the GPS 2F-9 navigation satellite.

The newest Global Positioning System replenishment satellite went into operation Tuesday night, five weeks after ascending to space from Cape Canaveral atop a United Launch Alliance Atlas 5 rocket.