Update, 3:25 p.m.: The Delta IV Heavy rocket launched from Vandenberg Space Force Base. Update, 3:20 p.m.: The mission director gave the final go for launch after all parties had check in with “go” ...

The U.S. Space Force Space Launch Delta 30 has taken an initial step toward evaluating the possibility of supporting heavy ...

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.

A NASA-funded study found that a human-rated Delta IV heavy rocket could be a cheaper route to the International Space Station than NASA’s Ares I crew launch vehicle. But the human-rated United Launch ...