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

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

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

A classified US Space Force mission aboard United Launch Alliance’s Vulcan rocket ignited public curiosity after strange ...

Vulcan rocket carrying the USSF-106 mission for the United States Space Force's Space Systems Command (SSC) lifted off on Aug ...

What time is liftoff? ULA's Vulcan could be visible for most of Florida pending weather. Did your city make the rocket launch ...

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

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 ...

Visible across the Northeast, the bright, pill-shaped light was the exhaust plume from the United Launch Alliance's Vulcan ...

The company lofted an experimental navigation satellite on behalf of the U.S. military Tuesday at 8:56 p.m. EDT (0056 GMT on ...

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