“The U.S.

Originally shared by STS Aviation Group

“The U.S. Air Force’s mysterious X-37B space plane will return to Earth this week — possibly as early as Tuesday — after 22 months in orbit on a secret mission.” | Via CBS News 

http://www.cbsnews.com/news/top-secret-x-37b-military-space-plane-could-land-in-california-this-week/