Enlarge / In this video frame from ULA’s live broadcast, three RS-68A engines power the Delta IV Heavy rocket into the sky over Cape Canaveral, Florida.United Launch Alliance
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 Heavy, one of the world’s most powerful rockets, launched for the 16th and final time Tuesday. It was the 45th and last flight of a Delta IV launcher and the final rocket named Delta to ever launch, ending a string of 389
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