- US Air Force's X-37B Space Plane Wings Past 200 Days in Orbit http://www.space.com/31308-air-force-space-plane-200-days-orbit.html 174 comments space
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- Space.com: NASA, Space Exploration and Astronomy News https://space.com 152 comments
- US Air Force Launches X-37B Space Plane on 4th Mystery Mission | Space http://www.space.com/29448-x37b-space-plane-launches-fourth-mission.html 13 comments
- US Air Force's Next X-37B Space Plane Mystery Mission to Test Thruster | Space http://www.space.com/29282-air-force-x37b-space-plane-thruster.html 12 comments
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