The U.S. Space Force is putting an indefinite halt on all national security missions aboard United Launch Alliance's Vulcan Centaur, following a repeat anomaly with the rocket's side boosters.

Moments after liftoff from Florida’s Space Coast early Thursday morning, a shower of sparks emerged in the exhaust plume of United Launch Alliance’s Vulcan rocket. Seconds later, the rocket twisted on ...

Add Yahoo as a preferred source to see more of our stories on Google. A United Launch Alliance Vulcan rocket carrying a suite of classified Space Force payloads suffered what appeared to be a burn ...

North Korean leader Kim Jong-un oversaw the test firing of a new large-caliber multiple rocket launcher (North Korea’s term for a multiple rocket launcher), according to a report by the North’s state ...

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

With the upcoming launch, SpaceX is eager to prove Starship V3’s readiness for more ambitious test flights, including an important orbital refueling experiment considered a stepping stone toward ...

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