A rocket the Centennial company has worked on for years is cleared for liftoff on billions of dollars worth of military space ...

Vulcan's certification means SpaceX should have at least one competitor for future launches - though several other firms are ...

The US Space Force on Wednesday announced that it has certified United Launch Alliance's Vulcan rocket to conduct national security missions.

People across Europe may have had the chance to see the phenomenon -- as long as it was not obscured by clouds ...