The Air Force’s mysterious spy spaceplane, X-37B, is slated to launch its sixth mission to Earth orbit on May 16th. Its exact purpose is a secret, though the Air Force says the vehicle will be carrying a number of experiments on this trip and testing out new …

The Air Force’s mysterious spy spaceplane, X-37B, is slated to launch its sixth mission to Earth orbit on May 16th. Its exact purpose is a secret, though the Air Force says the vehicle will be carrying a number of experiments on this trip and testing out new …

Takeoff is scheduled for 10:13AM ET Saturday

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