The military's shuttle X-37-B Orbital Test Vehicle landed back on Earth this week. What has it been doing in space all this time? Trace investigates. Read Mo...
Secret Missions of the X-37B
X-37B Orbital Test Vehicle-3 Lands at Vandenberg AFB
Launch of X-37B Mini Space Shuttle on OTV-3 Mission
X-37 ALTV Test Flight (2010)
X-37B: Secret space plane
What Was The Military's Secret Shuttle Doing In Space?