Space ShuttleNASA donates the retired Space Shuttle Endeavour, stripped of working engines and other vital equipment, to the California Science Center in Los Angeles. The last shuttle to be built, construction on Endeavour began in 1988 from spare parts to replace the destroyed Challenger; Endeavour lifted off for the first time in 1992, ultimately flying 25 missions, including many of the International Space Station construction missions. This also marks the final flight of the modified Boeing 747 shuttle carrier aircraft, which flew for the first time in 1977.