X-37B landing (OTV-4, 7 May 2017)

After 718 days in orbit, the X-37B Orbital Test Vehicle mission 4 (OTV-4) landed at NASA’s Kennedy Space Center Shuttle Landing Facility on 7 May 2017. The X-37B Orbital Test Vehicle, or OTV, is an experimental unmanned, reusable space plane to demonstrate technologies for a reliable space test platform for the U.S. Air Force. Credit: U.S. Air Force Boeing X-37B Orbital Test Vehicle Mission 4 landing 7 May 2017