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 ...

BREVARD COUNTY, Fla. — United Launch Alliance and Aerojet Rocketdyne celebrated a milestone this week just ahead of a planned Christmas Eve launch. Teams are now just days away from an important dress ...

United Launch Alliance is running short on usable hardware this year having to rely on its dwindling supply of Atlas V rockets while it continues an investigation into what went wrong on the last ...

Engineers have pinned down the cause of a hydrogen leak that destroyed a Centaur upper stage last March during qualification testing for United Launch Alliance's new Vulcan rocket. A fix is being ...

United Launch Alliance has started assembling its next Vulcan rocket—the first destined to launch a US military payload—as the Space Force prepares to certify it to loft the Pentagon’s most precious ...

T minus 10 9876543. We have engine ignition one and lift off of the United launch Alliance Vulcan rocket carrying UL A's legacy of reliability, orbital accuracy and high energy performance. Everything ...