The powerful Vulcan faces its biggest test yet as it prepares to launch on its second national security mission from Florida.

United Launch Alliance flew its Vulcan rocket for only the fourth time early Thursday, but suffered yet another fiery burn ...

Vulcan is central to ULA’s effort to replace its Atlas 5 rocket and compete more directly for national security launches. With Vulcan missions on hold, the Space Force is now reliant solely on SpaceX ...

The launch of an Atlas V rocket that was scheduled for this evening at Vandenberg Air Force Base has been postponed a day due to unfavorable weather.

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