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

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 L3Harris-built Navigation Technology Satellite-3 (NTS-3) satellite launched on a United Launch Alliance Vulcan rocket Aug ...

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

A mysterious glowing object spotted over New Jersey skies Tuesday night, Aug. 12, had locals buzzing — but it wasn’t a UFO.