Delta IV was a group of five expendable launch systems in the Delta rocket family. It flew 45 missions from 2002 to 2024. Originally designed by Boeing 's Defense, Space and Security division for the Evolved Expendable Launch Vehicle (EELV) program, the Delta IV became a United Launch Alliance (ULA) product in 2006.

The heavy-performance rocket is recognized for delivering high-priority missions for national security and NASA's first Orion spacecraft on an uncrewed flight test and sent the Parker Solar Probe to study the atmosphere of the Sun. The Delta rocket played a pivotal role in the evolution of space flight since the 1960’s.

The Delta IV Heavy (Delta 9250H) was an expendable heavy-lift launch vehicle, the largest type of the Delta IV family. It had the highest capacity of any operational launch vehicle in the world after the retirement of the Space Shuttle in 2011 until the Falcon Heavy debuted in 2018, and it was the world's third highest-capacity launch vehicle ...

The Delta rocket family was a versatile range of American rocket-powered expendable launch systems that provided space launch capability in the United States from 1960 to 2024. Japan also launched license-built derivatives (N-I, N-II, and H-I) from 1975 to 1992.More than 300 Delta rockets were launched with a 95% success rate. The series was phased out in favor of the Vulcan Centaur, with the ...

Mar 27, 2024 · Now, United Launch Alliance's last Delta IV Heavy rocket is set to lift off Thursday from Cape Canaveral Space Force Station, Florida, with a classified payload for the National Reconnaissance...

Apr 9, 2024 · The final flight of United Launch Alliance's Delta IV Heavy rocket took off Tuesday from Cape Canaveral, Florida, with a classified spy satellite for the National Reconnaissance Office.

Apr 10, 2024 · The retirement of the Delta IV Heavy marks a transition to ULA’s new Vulcan rocket, which successfully completed its inaugural mission earlier this year, signaling the continuous evolution of space exploration technology.

Apr 9, 2024 · The retirement of the Delta IV Heavy marks a transition to ULA’s new Vulcan rocket, which successfully completed its inaugural mission earlier this year, signaling the continuous evolution of space exploration technology.

Dec 20, 2004 · The Delta IV Heavy (Delta 9250H) is an expendable heavy-lift launch vehicle, the largest type of the Delta IV family, and is the world's second highest-capacity rocket in operation. It is manufactured by United Launch Alliance and was first launched in 2004. Learn about the Delta IV Heavy rocket.

Mar 26, 2024 · The Delta IV Heavy rocket, which had been dubbed by ULA as "the most metal of rockets," will deliver NROL-70, a National Reconnaissance Office mission, to space from Space Launch Complex-37 at Cape Canaveral Space Force Station. The mission marks the 389th and last flight of the Delta program, which dates back to 1960.