Discovery
ORG
Discovery
One of NASA's spacecrafts, that is large enough to carry major station components, is Discovery. A space shuttle has flown once since the Columbia accident; the fleet was grounded again after the Discovery's mission in July. In its launching, more foam insulation fell from its external fuel tank than expected. NASA's three shuttles are Atlantis, Discovery and Endeavour and they are the only spacecraft large enough to carry major station components. A space shuttle has flown once since the Columbia accident; the fleet was grounded again after the Discovery's mission.