Secretive X-37B military space plane marks 700 days in orbit

The U.S. Air Force’s robotic X-37B space plane has now been circling Earth for 700 days on its latest hush-hush mission.

The original article can be found here: http://www.foxnews.com/tech/2017/04/21/secretive-x-37b-military-space-plane-marks-700-days-in-orbit.html

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