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

The Vulcan, the United Launch Alliance's newer rocket, got off the ground from Florida on its first national security mission ...

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

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

United Launch Alliance's Vulcan Centaur lifted off for the third time ever in an experimental launch to put navigation ...

What was the mysterious white spiral flying in the night sky as stargazers looked up during the Perseid meteor shower peak ...

The Cape's August launch schedule kicks off with NASA's SpaceX Crew-11 mission, with space fans anticipating target dates for ...

The first two Vulcan test flights last year used a configuration of the rocket with two strap-on boosters to add an extra ...

A United Launch Alliance Vulcan rocket is gearing up to carry a classified national security payload into space Tuesday night ...

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

United Launch Alliance is set to launch its first military mission on the new heavy-lift Vulcan rocket on Tuesday night.

Watch live as United Launch Alliance’s new Vulcan rocket is set to launch its first national security mission from Cape ...