Video: Delta 4 launches before dawn from California

A United Launch Alliance Atlas 5 rocket blasted off from Cape Canaveral at 12:13 p.m. EDT (1613 GMT) Saturday to deploy a new Global Positioning System satellite.

SpaceX is readying two Falcon 9 rockets for a pair of flights nine hours apart Sunday from separate pads along Florida’s Space Coast. Weather permitting, the back-to-back departures Sunday would mark shortest span between two orbital-class launches from Cape Canaveral since 1966.

The full broadcast of the Atlas 5 NROL-55 / Cubsat launch. (Membership required)