- Enterprise: Shuttle prototype used in jetliner-drop tests over Edwards Air Force Base in California in 1977 and never flew in space. Originally on display at Smithsonian Institution hangar in Virginia, it was flown to New York City this past April and moved into the Intrepid Sea, Air and Space Museum in June.
- Columbia: Destroyed during descent on Feb. 1, 2003, after 28 missions stretching back to 1981. All seven astronauts were killed. The wreckage is stored in NASA's Vehicle Assembly Building at Kennedy Space Center for research purposes.
- Challenger: Destroyed during launch on Jan. 28, 1986, after 10 missions dating to 1983. All seven astronauts were killed. Wreckage is buried in a pair of abandoned missile silos at Cape Canaveral Air Force Station.
- Discovery: Moved to Smithsonian Institution hangar in Virginia in April after 39 missions dating to 1984.
- Atlantis: Moving Friday to Kennedy Space Center Visitor Center after 33 missions stretching back to 1985.
- Endeavour: Flown to Los Angeles in September and moved into California Science Center in October after 25 missions dating to 1992. It was the replacement for space shuttle Challenger.
(Copyright 2012 by The Associated Press. All Rights Reserved.)