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 ...

Add Yahoo as a preferred source to see more of our stories on Google. At 2:47 p.m. EDT Thursday, March 28, ULA called a scrub. At 2:45 p.m. EDT (previously 1:40 p.m. EDT and 2:03 p.m. EDT) the Delta ...

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

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 ...