LOS ANGELES, CA – OCTOBER 12: People gather as the space shuttle Endeavour is transported to the California Science Center in Exposition Park from Los Angeles International Airport (LAX) on October 12, 2012 in Los Angeles, California. Endeavour was flown cross-country atop NASA’s Shuttle Carrier Aircraft from Kennedy Space Center in Florida to LAX on its last flight ever on September 21. From there, it was transported to the California Science Center in Exposition Park where it will be on permanent public display. Completed in 1991, Endeavour was built to replace the space shuttle Challenger which disintegrated during a catastrophic re-entry accident. This fifth and final space shuttle orbiter circled the earth 4,671 times and traveled nearly 123 million miles during its 25 missions from 1992 to 2011. (Photo by David McNew/Getty Images)