Add Yahoo as a preferred source to see more of our stories on Google. The Air Force has started ground testing its first Anduril-made semiautonomous drone wingmen known as collaborative combat ...

Radian Aerospace’s subscale prototype for its Radian One space plane sits on a runway in the United Arab Emirates. (Radian Aerospace Photo) Seattle-based Radian Aerospace has finished the first round ...

GE Aerospace has completed initial ground testing of a turbine-based hybrid-electric propulsion system at its Ohio facility, demonstrating power transfer capabilities that exceeded NASA technical ...

Hypersonic start-up Hermeus has completed ground testing of its Quarterhorse Mk 1 vehicle and is preparing to launch a flight test campaign for the subsonic jet. The Atlanta-based firm on 17 December ...

Stoke Space has mounted its Andromeda2 upper stage rocket engine cluster on a test stand at its Moses Lake, Washington, site ahead of ground testing. The Kent, Washington-based startup is attempting ...

A SpaceX rocket booster exploded during ground testing early Friday at the company's Starbase complex in South Texas. There were no injures in the mishap, which involved the first in the newest ...