11/20/2010 – CAPE CANAVERAL AIR FORCE STATION, Fla — The 45th Space Wing launch of a Delta IV-Heavy Launch Vehicle carrying a National Reconnaissance Office payload has been rescheduled to Nov ...

Cape Canaveral AFS, Fla., (Jan. 17, 2009) – United Launch Alliance’s Delta IV Heavy rocket carrying a payload for the National Reconnaissance Office successfully lifted off from Space Launch ...

PATCHED UP: A minor hydrogen leak on a U.S. Air Force/United Launch Alliance Delta IV Heavy rocket discovered during a countdown dress rehearsal with the vehicle on Launch Complex 37 at Cape ...

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 ...

The United Launch Alliance's (ULA) Delta IV Heavy rocket lifted off from Space Launch Complex-37 (SLC-37) at Cape Canaveral Space Force Station in Florida at 12:53 p.m. EDT (1653 GMT) on April 9.

March 28 (UPI) -- United Launch Alliance has delayed the last launch of a Delta IV Heavy rocket booster to Friday afternoon. The rocket, which served as a workhorse for uncrewed American space ...

The Delta IV Heavy features three core stages in a side-by-side configuration, each powered by a single Aerojet Rocketdyne RS-68A engine generating 705,000 pounds of thrust at liftoff.

The Delta IV Heavy, powered by the RS-68A engine, continues to be the primary heavy-lift launch vehicle for the United States. The Delta IV Heavy has four launches remaining.

The Delta IV Heavy was loaded with 470,000 gallons of liquid oxygen and liquid hydrogen before takeoff. Weather balloons were released at about 9 a.m. to accurately measure the speeds and directions ...