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X-37b Space Plane: Pentagon Experiment For Unmanned Spaceship Spies?
Has this space plane been spying on us?
US Air Force X-37B Space Plane Launches 3rd Mystery Mission | Video
Mysterious space plane returns to orbit
The mysterious X-37B returns to earth after TWO YEARS in orbit - Daily Mail
X 37b Space Plane Pentagon Experiment For Unmanned Spaceship
Air Force's Secret X37B Drone Begins New Space Mission
Top secret space plane lands in US - BBC News
Unmanned Space plane returns to Earth after 2 years
Secret Air Force space plane X-37B set to return to Earth after 22-month mission
X-37B - Air Force Tech Report
Secret U.S. Space Plane Return To Earth Expected | Video
