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

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

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

A ULA Vulcan rocket launched a Space Force mission, but an unexpected light show from its boosters sparked questions. Here's what we know.

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

The United Launch Alliance is planning for the Vulcan to become its workhorse rocket. It faces its biggest test yet in its next launch.

The latest flight of United Launch Alliance’s Vulcan rocket was more than another routine climb to orbit. It was a high‑stakes national security mission, a live engineering stress test and a preview ...

The Vulcan has launched on its second-ever national security spaceflight in what will be the biggest test yet for ULA's ...