Delta IV Heavy

A Delta IV Heavy lifts off from Space Launch Complex 6 at Vandenberg Air Force Base, California, on August 28, 2013, carrying a National Reconnaissance Office satellite. Three orange cores side by side make it impossible to mistake for anything else. It was a workhorse for spy satellites, launching 12 missions for the NRO, and it also sent the Parker Solar Probe toward the Sun in 2018. Its final launch on April 9, 2024 ended the Delta era as ULA's heavy work passed to Vulcan.