Space Center Houston's full-size space shuttle mockup went on display outside the NASA Johnson Space Center visitor center in 2012. In 2015, it will be displayed atop NASA's historic Shuttle Carrier ... more 
Space Center Houston's full-size space shuttle mockup went on display outside the NASA Johnson Space Center visitor center in 2012. In 2015, it will be displayed atop NASA's historic Shuttle Carrier Aircraft. less 
1 / 19
SPACE.com | Photo By Space Center Houston
Fri, May 3, 2013 5:00 PM EDT