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-America’s X-37B space plane looks like a scaled-down shuttle, but it has become one of the most consequential military programs of the post-Cold War era. -Born as a NASA technology demonstrator and ...

The U.S. Air Force X-37B Orbital Test Vehicle 4 landed at NASA's Kennedy Space Center Shuttle Landing Facility in Florida May 7, 2017. Managed by the Air Force Rapid Capabilities Office, the X-37B ...

The U.S. Air Force said late Nov. 30 that its first X-37B Orbital Test Vehicle, in orbit since April, is slated to land Dec. 3-6, depending on technical and weather conditions. “Preparations for the ...

The Air Force's experimental X-37B space plane announced the end of its nearly two-year mission by creating a sonic boom on Sunday that surprised residents along Florida's Space Coast. Officials have ...

There are many theories about what exactly the unmanned X-37B is doing as it circles the Earth on long-duration missions. This much we know: It's not a bird and it's not exactly a plane. Beyond that, ...