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

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

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

United Launch Alliance (ULA) completed the second successful launch of its Vulcan rocket Friday morning, a key step in the future use of the rocket for national security missions. The 202-foot ...

Mr. Bruno said the United Launch Alliance was aiming to launch 25 missions in 2025, and that the mix would be half government missions and half commercial customers.

The United Launch Alliance recently announced it’s targeting May for the inaugural launch of its highly anticipated Vulcan Centaur rocket, which is expected to carry everything from satellites ...

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