United Launch Alliance (ULA) completed the second successful launch of its Vulcan rocket Friday morning, a key step in the future use of the rocket for national security missions. The 202-foot ...

During the mission, right after launch a nozzle sheared off one of two solid rocket boosters provided by Northrop Grumman. Vulcan’s main BE-4 engines, built by Blue Origin, were powerful enough ...

The next launch of a United Launch Alliance rocket could come as soon mid-year, but that depends on two things — Amazon Kuiper satellites being ready and the the Vulcan mishap being fully ...