Created 10-Apr-24
Modified 11-Apr-24
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excerpts from spaceflightnow.com:

ULA concludes six decades of Delta rocket flights with final Delta 4 Heavy mission.

A ULA Delta 4 Heavy rocket lifts off from Space Launch Complex 37 on Tuesday, April 9, 2024. This was the 16th and final launch of a Delta 4 Heavy rocket.

The second time was the charm for the finale of the Delta family of rockets. Following an issue with a gaseous nitrogen pipeline beyond the control of United Launch Alliance (ULA) that caused the March 28 scrub the second launch attempt on April 9 proved successful.

Liftoff of the Delta 4 Heavy rocket from Space Launch Complex 37 (SLC-37) at Cape Canaveral Space Force Station occurred at 12:53 p.m. EDT (1653 UTC). The “most metal of all rockets” as described by ULA President and CEO Tory Bruno rocketed away from the pad at the start of the launch window, carrying a payload for the National Reconnaissance Office (NRO).

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