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Five more Delta 4-Heavy flights in ULA backlog after final “single stick” launch
The last Delta 4 launcher to fly in a single-core configuration rumbled into space Thursday morning from Cape Canaveral with a GPS navigation satellite, leaving United Launch Alliance with five more Delta 4-Heavy missions on contract through late 2023 before the Delta rocket family retires from service.

Delta 4 launch seen from press viewing site (members only)
The final Delta 4 Medium rocket lifts off from Cape Canaveral Air Force Station on August 22, 2019, carrying into orbit the U.S. Air Force’s GPS 3 SV02 navigation satellite.

Photos: Final “single stick” Delta 4 rocket lifts off from Cape Canaveral
The last Delta 4-Medium rocket lifted off from Cape Canaveral Thursday with a GPS navigation satellite for the U.S. Air Force.
VideoDelta 4 rocket’s launch timeline with GPS 3 SV02
A United Launch Alliance Delta 4 rocket will deliver the U.S. Air Force's second GPS 3-series navigation satellite into an elliptical transfer orbit nearly two hours after liftoff from Cape Canaveral.
VideoLive coverage: Delta 4 rocket lifts off with GPS satellite
The last flight of the single-core variant of United Launch Alliance's Delta 4 rocket lifted off at 9:06 a.m. EDT (1306 GMT) Thursday from Cape Canaveral Air Force Station, Florida. The 207-foot-tall launcher carried a GPS navigation satellite into orbit for the U.S. Air Force.

ULA’s last Delta 4-Medium rocket set for launch Thursday
United Launch Alliance is set to retire part of its rocket family Thursday with the final flight of the Delta 4 rocket's "single stick" configuration, a mission set for liftoff from Cape Canaveral carrying a new GPS navigation satellite into orbit for the U.S. Air Force.

Astrobotic lunar lander to launch on ULA’s first Vulcan rocket
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.

ULA’s second launch of the month scheduled for Thursday
Weather forecasters expect a 70 percent chance of favorable conditions at Cape Canaveral for liftoff of a United Launch Alliance Delta 4 rocket Thursday with a GPS navigation satellite, marking the last flight of the Delta 4's single-core variant after 29 flights since 2002.

Photos: Atlas 5 blasts off with U.S. Air Force communications payload
A United Launch Alliance Atlas 5 rocket took off from Cape Canaveral on Aug. 8 with the U.S. Air Force's fifth Advanced Extremely High Frequency communications satellite, the second launch from Florida's Coast in a span of less than 35 hours.

Sierra Nevada selects ULA’s Vulcan rocket to launch Dream Chaser missions
Sierra Nevada Corp. has booked at least six launches on United Launch Alliance's new Vulcan Centaur rocket to carry Dream Chaser supply ships into orbit on cargo runs to the International Space Station beginning in 2021, becoming the first confirmed customer for ULA's next-generation launcher.