Thanks to Tropical Storm Debby, the planned launch of a classified satellite on a Delta IV Heavy rocket is being pushed back from Thursday to Friday.

A United Launch Alliance Delta IV heavy rocket carrying classified spy satellite cargo for the U.S. National Reconnaissance Office lifts off from Space Launch Complex 37B at the Cape Canaveral ...

The Delta IV Heavy rocket launch at Vandenberg Air Force Base in Santa Barbara County, California, is now set for Saturday, January 19, 2019. The rocket launch has been delayed multiple times.

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.

The famed complex was recently home to United Launch Alliance’s Delta rockets until last year with the final launch of Delta IV Heavy rocket. The final launch of @ulalaunch ’s #DeltaIVHeavy ...