Delta IV Heavy made its debut during a December 2004 demonstration flight from Florida's Launch Complex 37. United Launch Alliance's last Delta IV Heavy triple-core rocket will launch on the NROL-70 ...

This is the rocket that literally lights itself on fire before it heads to space. It’s the world’s largest rocket entirely fueled by liquid hydrogen, a propellant that is vexing to handle but ...

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. The Delta IV ...

If you want to talk about a real success story in the annals of American rocketry, you can't help but immediately default to the Delta II family of medium-lift carrier rockets. Birthed from a lineage ...

Delta IV Heavy rocket has 3 Delta IV core stages. Each rocket engine produces up to 702,000 pounds of thrust. The engines aren't small: Just one engine weighs about 14,876 pounds and is 17 feet in ...