A Super-Secret Spacecraft Comes Back to Earth After Two Years

October 14, 2014 5:42 PM

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The U.S. Air Force has kept an unmanned space shuttle in orbit for the past two years, and it seems that no one without security clearance knows what it’s has been doing up there.

The X-37B Orbital Test Vehicle, which can enter orbit and land without human intervention, is scheduled to land sometime this week—the best guess is sometime Tuesday—at Vandenberg Air Force Base, northwest of Santa Barbara, Calif. The landing will mark completion of the program’s third and longest m...

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