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 ...

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 ...

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

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

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 ...

The United Launch Alliance launched a Vulcan rocket Tuesday night from Florida as part of the first U.S. Space ...