Live coverage: Atlas 5 countdown and launch journal

The 200th Atlas-Centaur rocket, history some 52 years in the making, will blast off Tuesday from Cape Canaveral to deliver a U.S. Navy mobile communications satellite into orbit.

A 78-foot-tall Minotaur 4 rocket is poised for liftoff Wednesday from Virginia’s Eastern Shore carrying four top secret payloads into orbit for the National Reconnaissance Office.

The U.S. Air Force has identified the launch of a next-generation GPS navigation satellite for the first in a series of competitive rocket procurements between United Launch Alliance and SpaceX, service officials announced Wednesday.