Secretive X-37B Robot Space Plane Returns to Earth on Autopilot
The U.S. Air Force’s secretive robotic X-37B space plane returned to Earth Friday (Dec. 3) to wrap up a debut flight shrouded in secrecy.
The U.S. Air Force’s secretive robotic X-37B space plane returned to Earth Friday (Dec. 3) to wrap up a debut flight shrouded in secrecy.