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US Air Force's Secretive X-37B Space Plane (Infographic)

The x-37B Orbital Test Vehicle is an unmanned space test vehicle for the USAF.
(Image credit: Karl Tate, SPACE.com)

The X-37B Orbital Test Vehicle is an unmanned space test vehicle for the USAF. The X-37B is based on NASA's original X-37 design, the secretive plane's launch test flight was in April 2010. A second test flight, using a second vehicle - the Orbital Test Vehicle 2 - launched in March 2011. Take a look at the basic facts of the X-37B robotic space plane in the SPACE.com infographic above.

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Karl Tate
Karl's association with SPACE.com goes back to 2000, when he was hired to produce interactive Flash graphics. Starting in 2010, Karl has been TechMediaNetwork's infographics specialist across all editorial properties.  Before joining SPACE.com, Karl spent 11 years at the New York headquarters of The Associated Press, creating  news graphics for use around the world in newspapers and on the web.  He has a degree in graphic design from Louisiana State University. To find out what his latest project is, you can follow Karl on Google+.