Slideshow

Classified X-37B space plane breaks space longevity record

The secret space plane could be testing new technology for spy satellites

  • The X-37 as it might have looked should the project have continued under NASA

  • An artist's rendition of the X-37 sitting in the cargo bay of the Space Shuttle, as it might have done had the project been continued under NASA.

  • The X-37B is seen shortly after landing at Vandenberg Air Force Base in California after its first mission on December 3, 2010

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