The United Launch Alliance's (ULA's) Delta IV heavy-lift rocket launched the NROL-70 mission from Space Launch Complex-37 at ...

The sky rumbled and the ground shook as the three most powerful hydrogen-fueled liquid rocket engines ever built successfully boosted a U.S. government satellite into orbit. Developed by Pratt & ...

The U.S. Air Force could clear the Delta IV rocket for flight as soon as May as an investigation into a mishap with the Pratt & Whitney Rocketdyne RL10B-2 upper stage winds down. Next up for a Delta ...

The final United Launch Alliance (ULA) Delta IV Heavy rocket carrying the NROL-70 mission for the National Reconnaissance Office (NRO) lifts off from Space Launch Complex-37 on April 9 at 12:53 p.m.

In a window-rattling departure, a Delta 4 rocket soared into space Saturday morning from Vandenberg Air Force Base to deliver a new weather satellite that will aid U.S. military troops around the ...

Cape Canaveral Air Force Station, Fla., (Oct. 4, 2012) – A United Launch Alliance (ULA) Delta IV rocket carrying the Global Positioning System (GPS) IIF-3 payload for the United States Air Force ...

new video loaded: Delta IV rocket blasts off carrying "next generation" satellite The Delta IV rocket lifts off from Cape Canaveral, Florida, carrying a "next-generation" satellite for the U.S. Air ...

The much-delayed Delta IV Heavy rocket launch has a new date, the United Launch Alliance tweeted Tuesday morning. The rocket is now set to launch from Vandenberg on Saturday, Jan. 19, at 11:05 a.m., ...

The United Launch Alliance's (ULA's) Delta IV heavy-lift rocket launched the NROL-70 mission from Space Launch Complex-37 at Cape Canaveral Space Force Station in Florida. It was the final launch for ...