BBC: On 22 April, the US Air Force’s robot spaceplane, the X-37B, was launched atop an Atlas 5 rocket from Cape Canaveral Air Force Station in Florida. Yesterday the X-37B returned to Earth, gliding to a successful landing at Vandenberg Air Force Base in California. The reusable spaceplane is about a quarter of the size of the space shuttle. What, if anything, the X-37B carried in its cargo bay during the flight and what its ultimate purpose is remain classified.
