The Air Force says that the almost one-of-a-kind spacecraft "conducted on-orbit experiments" in the the longest-ever mission for the X-37B program.
An Atlas V rocket carrying the unmanned craft, which looks like a miniature space shuttle, has the green light for a planned liftoff Tuesday. Just don't ask what it's up to.
Resembling a shrunk-down space shuttle, the Air Force's X-37B returns to Earth from its debut test flight, pointing the way toward cheaper, adaptable--and perhaps military--missions.
The unmanned X-37B Orbital Test Vehicle heads into space on its first mission, as the Air Force scopes out how it might eventually serve "warfighters' needs."
But what it's doing up there or for how long -- well, you might glean more from talking to the wall than asking the Air Force about its hush-hush mission.
The X-37B -- undertaking its fourth mission -- shared its rocket ride back to space with an experimental LightSail spacecraft provided by the Bill Nye-backed Planetary Society.
Some very hardcore testing will determine whether or not fuel cells are viable for Chevrolet's mid-size pickup.
The agency wants to make sure cheaters can't rely on the same tactics that kicked off Volkswagen's scandal.
The ride-hailing company partners with the University of Arizona to boost its mapping and safety technology, leading to more speculation about self-driving cars.
No, you probably don't want these on your street car.