USAF Secret X-37B Touches Down

After more than a year of circling the globe, the US Air Force's X-37B has finally touched down at Vandenberg Air Force Base in California. The unmanned, reusable space plane spent 469 days in orbit, performing a number of experiments (many of which are classified) before finally ending its lengthy run Saturday. http://www.engadget.com/2012/06/18/x-37b-finally-touches-down/

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