Pennsylvania residents witness a stunning celestial event: swirling lights in the sky. Discover what caused this mesmerizing ...

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

Vulcan rocket lifted off from Cape Canaveral shortly before 9 p.m. on Tuesday for the U.S. Space Force USSF-106 mission in ...

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 ...

From Massachusetts to Maryland, sky watchers reported seeing what looked like an alien spacecraft overhead Tuesday night.No need for alarm — the strange light is likely the result of Tuesday night's ...

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

The United Launch Alliance successfully launched a Vulcan Centaur rocket into orbit from Cape Canaveral Space Force Station ...

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

ULA's Vulcan successfully launched last evening, the company said, marking the rocket's long-awaited first National Security Space Launch.