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

A United Launch Alliance Vulcan rocket is gearing up to carry a classified national security payload into space Tuesday night ...

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

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