Long-Delayed Delta IV Heavy Lofts Heavyweight NROL-71 Spy Satellite

ULA’s first flight of 2019 sets off from Vandenberg Air Force Base, Calif., at 11:10 a.m. PST Saturday, 19 January. Photo Credit: Brian Sandoval/AmericaSpace

Although relegated last February to second place on the list of the world’s most powerful operational rockets—sitting behind SpaceX’s Falcon Heavy—the United Launch Alliance (ULA) Delta IV Heavy roared […]