United Launch Alliance was hoping to ramp up its new Vulcan rocket launches this year, but won’t be launching any national ...

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 Brunswick-based startup is marketing its non‑toxic, bio‑derived fuel and a patent‑pending oxidizer system as an ...

As a ULA Vulcan bolted into the early Thursday skies over Cape Canaveral, many witnessed a solid rocket booster issue.

A halt has been ordered on the use of ULA's Vulcan rocket until the "anomaly is solved," a top official said on Wednesday.

Reports suggest that the US Space Force is pausing missions on the Vulcan rocket until an anomaly observed during a February ...