ARCHIVE: Real World: Space Shuttle Thermal Protection System
Find out how experts used sand to protect the space shuttle. The shuttle, retired in 2011, was central to NASA's explorations for 30 years. This website looks back at the Shuttle's historic missions, the people it flew into space, and its achievements. http://www.nasa.gov/externalflash/the_shuttle/
Published on: June 22, 2009
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