X-37B

  • U.S. Air Force’s X-37B returned to Earth

    The U.S. Air Force’s robotic X-37B space plane finally returned to Earth Saturday (June 16), wrapping up a mysterious mission that lasted more than a year in orbit.   The unmanned X-37B spacecraft,also known as Orbital Test Vehicle-2 (OTV-2), glided back to Earth on autopilot, touching down at California’s...

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