Live coverage: Atlas 5 countdown and launch journal

This photo gallery shows the U.S. Navy’s fourth Mobile User Objective System communications satellite, already encapsulated in the 18-foot-diameter nose cone, being lifted atop the United Launch Alliance Atlas-Centaur rocket last week at the Vertical Integration Facility.

The launch of a SpaceX Falcon 9 rocket Aug. 24 from California delivered Taiwan’s Formosat 5 Earth-imaging satellite to orbit, and the Falcon’s first stage booster returned to landing on a drone ship downrange in the Pacific Ocean.

Astrobotic, a Pittsburgh-based company developing a robotic lunar lander, will launch its first moon mission under contract to NASA on the debut flight of United Launch Alliance’s Vulcan Centaur rocket in 2021, officials announced Monday.