Add Yahoo as a preferred source to see more of our stories on Google. United Launch Alliance was hoping to ramp up its new Vulcan rocket launches this year, but won’t be launching any national ...

A United Launch Alliance Vulcan rocket carrying a suite of classified Space Force payloads suffered what appeared to be a burn through in the nozzle of a strap-on solid-fuel booster Thursday, but ...

NASA conducted a full-scale static test fire of the Booster Obsolescence and Life Extension (BOLE) solid rocket motor - part ...

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

The Space Force won’t be launching on United Launch Alliance Vulcan rockets until the company figured out why parts of its rocket boosters burn off on launch.

United Launch Alliance was hoping to ramp up its new Vulcan rocket launches this year, but won't be launching any national security missions until it solves a recurring issue of booster nozzles ...