ULA's Vulcan is replacing the company's workhorse Atlas 5 rocket and the already-retired Delta 4 family of launchers.

Theories suggest the display came from either the European Space Agency's Ariane 6 rocket or the United Launch Alliance's ...

A Jacksonville officer shot and killed a suspect on the run who confronted him with a knife, according to JSO Chief Alan ...

United Launch Alliance's Vulcan rocket launches its first national security mission, and Europe's Ariane 6 takes off on just ...

ULA Vulcan Launch completes its first National Security Space Launch mission, taking the reins from the Delta IV Heavy for ...

In the near-term, ULA will switch back to launching its soon-to-retire Atlas V rocket, the Vulcan rocket's predecessor. The ...

As it turns out, the cause of the strange light was a spacecraft, but not one piloted by little green men. There were two rocket launches last night that could have caused the anomaly, one launched ...

A successful rocket launch this week could mean big things for two large defense companies that co-own the space company.

The Pentagon has launched its first experimental navigation satellite in nearly five decades, aiming to test out a new ...

The light people were seeing was from the Vulcan rocket launched by the United Launch Alliance. It took off from Cape ...