The ships Discovery , Endeavour and Atlantis carry historic and economic value . The Enterprise , a test shuttle that never flew in space , is there now . The fourth , the Discovery , was a space shuttle that never flew into space . Communities housing the shuttle are expected to enjoy a tourist attraction . April 12 is the 50th anniversary of the first human space flight and 30th of the first manned flight .
The ships Discovery , Endeavour and Atlantis carry historic and economic value . The fourth , the Discovery , was a space shuttle that never flew into space . Communities housing the shuttle are expected to enjoy a tourist attraction . April 12 is the 50th anniversary of the first human space flight and 30th of the first manned flight .