ULA announces May launch of first Vulcan - SpaceNews

The first launch of United Launch Alliance’s Vulcan Centaur rocket is now scheduled for no earlier than May 4, the company announced Feb. 23.

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United Launch Alliance - Wikipedia

Vulcan on the pad for its first launch - SpaceNews

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Vulcan Centaur - Wikipedia

What time is ULA's 1st Vulcan rocket launch with Astrobotic's

United Launch Alliance's Vulcan Centaur - collectSPACE: Messages

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When will United Launch Alliance's Vulcan rocket fly?

What to Know About the ULA Vulcan Rocket Mission - The New York Times