Keep the shuttle flying
Friday, February 22, 2013
Secretive X-37B US Space Plane Could Evolve to Carry Astronauts | Space Planes & Human Spaceflight | Air Force X-37B Program & X-37C Space Plane Designs | Space.com
http://www.space.com/13230-secretive-37b-space-plane-future-astronauts.html
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