Tires from space shuttle Endeavour's final flight are on display at the California Science Center's, California Experience gallery, Tuesday, Oct. 30, 2012, in Los Angeles. The grand opening ceremony for the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion took place on Tuesday, Oct. 30, 2012. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

California Governor Jerry Brown speaks from a podium underneath the space shuttle Endeavour during the grand opening ceremony for the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

President and CEO of the California Science Center Jeffrey N. Rudolph speaks from a podium underneath the space shuttle Endeavour during the grand opening ceremony for the center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

David D. McBride, director of NASA's Dryden Flight Research Center, speaks from a podium underneath the space shuttle Endeavour during the grand opening ceremony for the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

A police officer is seen underneath the wing of the space shuttle Endeavour during the grand opening ceremony for the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

Mayor of Los Angeles Antonio Villaraigosa addresses a class of fourth graders during the grand opening ceremony for the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

Vocalist James Ingram sings "I Believe I Can Fly" from underneath the space shuttle Endeavour during the grand opening ceremony for the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

A government Transfer Order for Excess Personal Property is seen framed outside the office of President and CEO, California Science Center, Jeffrey N. Rudolph, on Tuesday, Oct. 30, 2012, in Los Angeles. The grand opening ceremony for the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion took place on Tuesday, Oct. 30, 2012. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

A space shuttle main engine (SSME) is on display near the space shuttle Endeavour at the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

David D. McBride, director of NASA's Dryden Flight Research Center, speaks from a podium underneath the space shuttle Endeavour during the grand opening ceremony for the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

NASA Astronauts, from left, Danny Olivas, Garrett Reisman, Barbara Morgan, and, NASA Associate Administrator for Education and Astronaut, Leland Melvin give high fives to school children as they enter the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

President and CEO of the California Science Center Jeffrey N. Rudolph speaks from a podium underneath the space shuttle Endeavour during the grand opening ceremony for the center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

Members of the Debbie Allen Dance Academy perform “Men in Black” choreographed by the legendary Debbie Allen during the grand opening ceremony for the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

The space shuttle Endeavour is seen as workers prepare for the grand opening ceremony for the California Science center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)

Chief Executive Officer of the Planetary Society, Bill Nye "The Science Guy", acts as emcee from a podium underneath the space shuttle Endeavour during the grand opening ceremony for the center's Samuel Oschin Space Shuttle Endeavour Display Pavilion, Tuesday, Oct. 30, 2012, in Los Angeles. Endeavour, built as a replacement for space shuttle Challenger, completed 25 missions, spent 299 days in orbit, and orbited Earth 4,671 times while traveling 122,883,151 miles. Photo Credit: (NASA/Bill Ingalls)