Mounted on top of a NASA transporter, the space shuttle Endeavour flies above the Golden Gate Bridge past the Marin Headlands in Sausalito, Calif. on Thursday, Sept. 20, 2012.  Photo: Paul Chinn, The Chronicle / SF  Mounted on top of a NASA transporter, the space shuttle Endeavour...  Enthusiasts snap photographs as the space shuttle Endeavour flies near the Golden Gate Bridge past the Marin Headlands in Sausalito, Calif. on Thursday, Sept. 20, 2012.  Photo: Paul Chinn, The Chronicle / SF  Enthusiasts snap photographs as the space shuttle Endeavour flies...  Mounted on top of a NASA transporter, the space shuttle Endeavour flies above the Golden Gate Bridge past the Marin Headlands in Sausalito, Calif. on Thursday, Sept. 20, 2012.  Photo: Paul Chinn, The Chronicle / SF  Mounted on top of a NASA transporter, the space shuttle Endeavour...  Nancy Crain (left) and Susette Stickel-Rufer take photos from the Marin Headlands in Sausalito, Calif., as the space shuttle Endeavour flies above the Golden Gate Bridge on its final flight before landing in Los Angeles on Thursday, Sept. 20, 2012.  Photo: Paul Chinn, The Chronicle / SF  Nancy Crain (left) and Susette Stickel-Rufer take photos from the...  Mounted on top of a NASA transporter, the space shuttle Endeavour flies above the Golden Gate Bridge past the Marin Headlands in Sausalito, Calif. on Thursday, Sept. 20, 2012.  Photo: Paul Chinn, The Chronicle / SF  Mounted on top of a NASA transporter, the space shuttle Endeavour...  Spectator watches from Treasure Island as the Space Shuttle Endeavor to flies over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez, The Chronicle / SF  Spectator watches from Treasure Island as the Space Shuttle...  The Space Shuttle Endeavour flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez, The Chronicle / SF  The Space Shuttle Endeavour flew over the Bay Area on Friday,...  The Space Shuttle Endeavour with the Bay Bridge in the foreground as it flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez - San Fran, The Chronicle / SF  The Space Shuttle Endeavour with the Bay Bridge in the foreground...  The retired shuttle Endeavour piggy-backs a modified Boeing 747 Shuttle Aircraft Carrier during its final flight Thursday, Sept. 20, 2012 as the pair soar over White Sands Missile Range east of Las Cruces, N.M, before reaching their landing destination in California. Photo: SHARI VIALPANDO-HILL, AP / LAS CRUCES SUN-NEWS  The retired shuttle Endeavour piggy-backs a modified Boeing 747...  A crowd gathers around the space shuttle Endeavour, carried atop NASA's 747 Shuttle Carrier Aircraft, after landing at Ellington Field on Wednesday, Sept. 19, 2012, in Houston. Endeavour stopped in Houston on its way from the Kennedy Space Center to the California Science Center in Los Angeles, where it will be placed on permanent display. Photo: Smiley N. Pool, AP / Pool Houston Chronicle  A crowd gathers around the space shuttle Endeavour, carried atop...  The Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft (SCA) flies near parasailers in Santa Monica, Calif., Friday, Sept. 21, 2012. / AL  The Space Shuttle Endeavour mounted on NASA's Shuttle Carrier...  Space shuttle Endeavour sits atop the shuttle aircraft carrier flies over downtown Austin, Texas early Thursday, Sept. 20, 2012. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. Photo: Alberto Martinez, AP / Statesman.com  Space shuttle Endeavour sits atop the shuttle aircraft carrier...  In this handout provided by NASA, NASA's Shuttle Carrier Aircraft, or SCA, with the space shuttle Endeavour mated on top is airborne after taking off from the Shuttle Landing Facility runway at NASA Kennedy Space Center on September 19, 2012 in Cape Canaveral, Florida. The SCA, a modified 747 jetliner, will fly Endeavour to Los Angeles where it will be placed on public display at the California Science Center. This is the final ferry flight scheduled in the Space Shuttle Program era. Photo: NASA, Getty Images / 2012 NASA  In this handout provided by NASA, NASA's Shuttle Carrier Aircraft,...  In this handout provided by NASA, Jorgen and Ruth Sabinsky watch as NASA's Shuttle Carrier Aircraft, or SCA, with the space shuttle Endeavour mated on top (top) flies over Cocoa Beach Pier on September 19, 2012 in Cocoa Beach, Florida. The SCA, a modified 747 jetliner, will fly Endeavour to Los Angeles where it will be placed on public display at the California Science Center. This is the final ferry flight scheduled in the Space Shuttle Program era. Photo: Bill Ingalls/NASA, Getty Images / 2012 NASA  In this handout provided by NASA, Jorgen and Ruth Sabinsky watch as...  In this handout provided by NASA, NASA's Shuttle Carrier Aircraft, or SCA, with the space shuttle Endeavour mated on top (top) flies over Cocoa Beach Pier on September 19, 2012 in Cocoa Beach, Florida. The SCA, a modified 747 jetliner, will fly Endeavour to Los Angeles where it will be placed on public display at the California Science Center. This is the final ferry flight scheduled in the Space Shuttle Program era. Photo: Bill Ingalls/NASA, Getty Images / 2012 NASA  In this handout provided by NASA, NASA's Shuttle Carrier Aircraft,...  Space shuttle Endeavour flies atop a modified jumbo jet near NASA's Michoud Assembly Facility, where the external fuel tanks for the shuttle program were made, in New Orleans, Wednesday, Sept. 19, 2012. Endeavour will make a stop in Houston before heading to the California Science Center in Los Angeles. Photo: Gerald Herbert, AP / AP  Space shuttle Endeavour flies atop a modified jumbo jet near NASA's...  Space Shuttle Endeavour rests atop NASA's 747 Shuttle Carrier Aircraft at Ellington Field in Houston on Wednesday morning September 19, 2012. Endeavour will spend the night in Houston before continuing its journey from the Kennedy Space Center in Florida to the California Science Center in Los Angeles where it will be on permanent display. Photo: Kevin M. Cox, AP / The Galveston County Daily News  Space Shuttle Endeavour rests atop NASA's 747 Shuttle Carrier...  Flying over the rocket garden, space shuttle Endeavour passes over the Kennedy Space Center Visitor Complex on it's flight to a runway near NASA's Johnson Space Center in Houston Wednesday, Sept. 19, 2012 a one-day stop on its trek west to retirement in a California museum. Photo: Tim Shortt, AP / Florida Today  Flying over the rocket garden, space shuttle Endeavour passes over...  Space shuttle Endeavour sits atop the shuttle aircraft carrier as it flies over Houston, Wednesday, Sept. 19, 2012. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. Photo: Michael Paulsen, AP / Houston Chronicle  Space shuttle Endeavour sits atop the shuttle aircraft carrier as...  Space shuttle Endeavour sits atop the shuttle aircraft carrier as it flies over the San Jacinto Monument in Houston, Wednesday, Sept. 19, 2012. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. Photo: James Nielsen, AP / Houston Chronicle  Space shuttle Endeavour sits atop the shuttle aircraft carrier as...  Joey Morrison adjusts his space helmet after watching the shuttle aircraft carrier with space shuttle Endeavour atop, land Wednesday, Sept. 19, 2012, at Ellington Field in Houston. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. (AP Photo/David J. Phillip Photo: David J. Phillip, AP / AP  Joey Morrison adjusts his space helmet after watching the shuttle...  The space shuttle Endeavour, carried atop NASA's 747 Shuttle Carrier Aircraft, makes a low pass over Ellington Field during a flyover on Wednesday, Sept. 19, 2012, in Houston. Endeavour stopped in Houston on its way from the Kennedy Space Center to the California Science Center in Los Angeles, where it will be placed on permanent display. Photo: Smiley N. Pool, AP / Pool Houston Chronicle  The space shuttle Endeavour, carried atop NASA's 747 Shuttle...  A crowd gathers around the space shuttle Endeavour, carried atop NASA's 747 Shuttle Carrier Aircraft, after landing at Ellington Field on Wednesday, Sept. 19, 2012, in Houston. Endeavour stopped in Houston on its way from the Kennedy Space Center to the California Science Center in Los Angeles, where it will be placed on permanent display. Photo: Smiley N. Pool, AP / Pool Houston Chronicle  A crowd gathers around the space shuttle Endeavour, carried atop...  Space Shuttle Endeavour rests atop NASA's 747 Shuttle Carrier Aircraft at Ellington Field in Houston on Wednesday morning September 19, 2012. Endeavour will spend the night in Houston before continuing its journey from the Kennedy Space Center in Florida to the California Science Center in Los Angeles where it will be on permanent display. Photo: Kevin M. Cox, AP / The Galveston County Daily News  Space Shuttle Endeavour rests atop NASA's 747 Shuttle Carrier...  Flying over the rocket garden, space shuttle Endeavour passes over the Kennedy Space Center Visitor Complex on it's flight to a runway near NASA's Johnson Space Center in Houston Wednesday, Sept. 19, 2012 a one-day stop on its trek west to retirement in a California museum. Photo: Tim Shortt, AP / Florida Today  Flying over the rocket garden, space shuttle Endeavour passes over...  The space shuttle Endeavour, carried atop NASA's 747 Shuttle Carrier Aircraft, makes a low pass over Ellington Field during a flyover on Wednesday, Sept. 19, 2012, in Houston. Endeavour stopped in Houston on its way from the Kennedy Space Center to the California Science Center in Los Angeles, where it will be placed on permanent display. Photo: Smiley N. Pool, AP / Pool Houston Chronicle  The space shuttle Endeavour, carried atop NASA's 747 Shuttle...  In this image provided by NASA the Space Shuttle Endeavour is ferried by NASA's Shuttle Carrier Aircraft (SCA) over the Kennedy Space Center in the early morning hours of Sept. 19, 2012 as it departs for California. Endeavour and the Shuttle Carrier Aircraft are in Houston after leaving Kennedy Space Center Wednesday. The ferry flight continues at dawn Thursday, heading to NASA Dryden, then on to Los Angeles Friday. This is the last flight for a space shuttle. Photo: ROBERT MARKOWITZ Robert Markowitz - NASA - JSC, AP / NASA  In this image provided by NASA the Space Shuttle Endeavour is...  A large crowd takes photographs of the Space Shuttle Endeavour sitting atop NASA's 747 Shuttle Carrier Aircraft at Ellington Field in Houston on Wednesday, Sept. 19, 2012. Endeavour will spend the night in Houston before continuing its journey from the Kennedy Space Center in Florida to the California Science Center in Los Angeles where it will be on permanent display. Photo: Kevin M. Cox, AP / The Galveston County Daily News  A large crowd takes photographs of the Space Shuttle Endeavour...  A Texas flag inadvertently flies upside down as NASA's 747 Shuttle Carrier Aircraft taxis the Space Shuttle Endeavour into position at Ellington Field in Houston on Wednesday morning September 19, 2012. Endeavour will spend the night in Houston before continuing its journey from the Kennedy Space Center in Florida to the California Science Center in Los Angeles where it will be on permanent display. Photo: Kevin M. Cox, AP / The Galveston County Daily News  A Texas flag inadvertently flies upside down as NASA's 747 Shuttle...  Four-year-old Miles Mataya of Friendswood gets a lift from his father Michael Mataya to view the Space Shuttle Endeavour and NASA's 747 Shuttle Carrier Aircraft at Ellington Field in Houston on Wednesday, Sept. 19, 2012. Endeavour will spend the night in Houston before continuing its journey from the Kennedy Space Center in Florida to the California Science Center in Los Angeles where it will be on permanent display. Photo: Kevin M. Cox, AP / The Galveston County Daily News  Four-year-old Miles Mataya of Friendswood gets a lift from his...  Flight engineer Larry Larose gives a tour inside NASA's 747 Shuttle Carrier Aircraft after it landed with Space Shuttle Endeavour at Ellington Field in Houston on Wednesday, Sept. 19, 2012. Endeavour will spend the night in Houston before continuing its journey from the Kennedy Space Center in Florida to the California Science Center in Los Angeles where it will be on permanent display. Photo: Kevin M. Cox, AP / The Galveston County Daily News  Flight engineer Larry Larose gives a tour inside NASA's 747 Shuttle...  The US Space shuttle Endeavour is seen atop NASA's Shuttle Carrier Aircraft, or SCA, at the Shuttle Landing Facility in the early morning hours at NASA's Kennedy Space Center on Tuesday, September 18, 2012 in Cape Canaveral, Florida. The SCA, a modified 747 jetliner, will fly Endeavour to Los Angeles where it will be placed on public display at the California Science Center. This is the final ferry flight scheduled in the Space Shuttle Program era. Photo: BILL INGALLS, AFP/Getty Images / (NASA/Bill Ingalls)  The US Space shuttle Endeavour is seen atop NASA's Shuttle Carrier...  The space shuttle Endeavour atop a modified jumbo jet is moved to the mate/demate structure for protection from a forecasted storm at the Kennedy Space Center in Cape Canaveral, Fla. on Tuesday, Sept. 18, 2012. The weather system has delayed the retired spacecraft's departure to Los Angeles. Photo: John Raoux, AP / AP  The space shuttle Endeavour atop a modified jumbo jet is moved to...  Anthony Addison, 45, and his mother Dianna Cruz, 65, reminisce about the shuttle program while viewing the Space Shuttle Endeavour atop NASA's 747 Shuttle Carrier Aircraft at Ellington Field in Houston on Wednesday, Sept. 19, 2012. Addison, then 10, and Cruz were on hand to photograph the original Space Shuttle Enterprise atop the Shuttle Carrier Aircraft on March 11, 1978 at Ellington Field during the very first shuttle ferry flight from California to Florida. Endeavour will spend the night in Houston before continuing its opposite journey from the Kennedy Space Center in Florida to the California Science Center where it will be on permanent display. / AL  Anthony Addison, 45, and his mother Dianna Cruz, 65, reminisce...  Space Shuttle Endeavour sits atop the shuttle aircraft carrier, flies over downtown Austin, Texas early Thursday, Sept. 20, 2012. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. Photo: Marco Hanson, AP / AP  Space Shuttle Endeavour sits atop the shuttle aircraft carrier,...  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft (SCA) lands at Edwards Air Force Base, Calif., Thursday, Sept. 20, 2012. Photo: Jae C. Hong, AP / AP  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft...  The Space Shuttle Endeavour sits atop NASA's Shuttle Carrier Aircraft (SCA) at the NASA Dryden Flight Research Center at Edwards Air Force Base, Calif., Thursday, Sept. 20, 2012. Endeavour returned to its California roots after a wistful cross-country journey that paid homage to NASA workers and former Arizona Rep. Gabrielle Giffords and her astronaut husband. Photo: Jae C. Hong, AP / AP  The Space Shuttle Endeavour sits atop NASA's Shuttle Carrier...  The Space Shuttle Endeavour sits atop NASA's Shuttle Carrier Aircraft (SCA) at the NASA Dryden Flight Research Center at Edwards Air Force Base, Calif., Thursday, Sept. 20, 2012. Endeavour returned to its California roots after a wistful cross-country journey that paid homage to NASA workers and former Arizona Rep. Gabrielle Giffords and her astronaut husband. Photo: Jae C. Hong, AP / AP  The Space Shuttle Endeavour sits atop NASA's Shuttle Carrier...  In this photo provided by the Southwest Photo Bank, former U.S. Rep. Gabrielle Giffords and husband, former astronaut Mark Kelly, watch the Space Shuttle Endeavor fly over Tucson, Ariz. on its way to Los Angeles, Thursday, Sept. 20, 2012. Kelly, Endeavour's last commander, requested that the shuttle pass over Tucson to honor Giffords, who is recovering after suffering a head wound in a shooting rampage last year. Photo: P.K. Weis, AP / Southwest Photo Bank  In this photo provided by the Southwest Photo Bank, former U.S....  Photo: Todd Trumbull / The Chronicle / SF  The Space Shuttle Endeavour flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Gonzalez, The Chronicle / SF  The Space Shuttle Endeavour flew over the Bay Area on Friday,...  Shuttle watchers on the Marin Headlands try to be first to spot Endeavour as it approaches on the first of two flybys.  Photo: Paul Chinn, The Chronicle / SF  Shuttle watchers on the Marin Headlands try to be first to spot...  Hundreds of space shuttle enthusiasts gather on the Marin Headlands to watch Endeavour fly above the Golden Gate Bridge on its final bow to the Bay Area before it becomes an exhibit in a Los Angeles museum. Its second flyover was a surprise.  Photo: Paul Chinn, The Chronicle / SF  Hundreds of space shuttle enthusiasts gather on the Marin Headlands...  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft, passes over the Golden Gate Bridge in San Francisco, Friday, Sept. 21, 2012. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. (AP Photo/Marcio Jose Sanchez)  Photo: Marcio Jose Sanchez, Associated Press / SF  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft,...  The Space Shuttle Endeavor flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Gonzalez, The Chronicle / SF  The Space Shuttle Endeavor flew over the Bay Area on Friday,...  The space shuttle Endeavour, piggybacking on a modified 747 carrier aircraft, soars over the Golden Gate Bridge.  Photo: Carla Thomas, Associated Press / SF  The space shuttle Endeavour, piggybacking on a modified 747 carrier...  The Space Shuttle Endeavor with the Golden Gate Bridge in the foreground as it flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez, The Chronicle / SF  The Space Shuttle Endeavor with the Golden Gate Bridge in the...  In this photo provided by NASA, space shuttle Endeavour and its 747 carrier aircraft soar over the Golden Gate Bridge in San Francisco during the final portion of its tour of California, Friday, Sept. 21, 2012. (AP Photo/NASA, Carla Thomas)  Photo: Carla Thomas, Associated Press / SF  In this photo provided by NASA, space shuttle Endeavour and its 747...  The Space Shuttle Endeavor with the tower of the new section of the Bay Bridge in the foreground as it flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez, The Chronicle / SF  The Space Shuttle Endeavor with the tower of the new section of the...  In this photo provided by NASA, space shuttle Endeavour and its modified 747 carrier aircraft soar over the Bay Bridge that connects San Francisco to Oakland during the final portion of its tour of California, Friday, Sept. 21, 2012. (AP Photo/NASA, Carla Thomas)  Photo: Carla Thomas, Associated Press / SF  In this photo provided by NASA, space shuttle Endeavour and its...  The Space Shuttle Endeavor flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez, The Chronicle / SF  The Space Shuttle Endeavor flew over the Bay Area on Friday,...  In this photo provided by NASA, the Space Shuttle Endeavour atop NASA's modified 747 carrier soars over the Tehachapi Mountains southeast of Bakersfield, Calif., during its tour of California, Friday, Sept. 21, 2012. After low-altitude flyovers of Sacramento, San Francisco, Los Angeles and numerous other communities and landmarks, the flight would conclude at Los Angeles International Airport where Endeavour would be turned over to the California Science Center for permanent exhibit. (AP Photo/NASA, Jim Ross)  Photo: Jim Ross, Associated Press / SF  In this photo provided by NASA, the Space Shuttle Endeavour atop...  The Space Shuttle Endeavour with the Bay Bridge in the foreground as it flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez, The Chronicle / SF  The Space Shuttle Endeavour with the Bay Bridge in the foreground...  SAN FRANCISCO, CA - SEPTEMBER 21: (EDITORS NOTE: Image has been converted to black and white.) The space shuttle Endeavour makes a pass over San Francisco before making its final landing in Los Angeles on September 21, 2012 in San Francisco, California. (Photo by Ezra Shaw/Getty Images)  Photo: Ezra Shaw, Getty Images / SF  SAN FRANCISCO, CA - SEPTEMBER 21: (EDITORS NOTE: Image has been...  The Space Shuttle Endeavour with the Transamerica Pyramid in the foreground as it flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez, The Chronicle / SF  The Space Shuttle Endeavour with the Transamerica Pyramid in the...  The space shuttle Endeavour passes over the Golden Gate Bridge in San Francisco, Friday, Sept. 21, 2012. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. (AP Photo/Michael Kass)  Photo: Michael Kass, Associated Press / SF  The space shuttle Endeavour passes over the Golden Gate Bridge in...  The Space Shuttle Endeavor with the Golden Gate Bridge in the foreground as it flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez, The Chronicle / SF  The Space Shuttle Endeavor with the Golden Gate Bridge in the...  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft, passes over the Golden Gate Bridge in San Francisco, Friday, Sept. 21, 2012. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. (AP Photo/Marcio Jose Sanchez)  Photo: Marcio Jose Sanchez, Associated Press / SF  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft,...  The Space Shuttle Endeavor with the Transamerica Pyramid in the foreground as it flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez - San Fran, The Chronicle / SF  The Space Shuttle Endeavor with the Transamerica Pyramid in the...  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft, passes over the Golden Gate Bridge in San Francisco, Friday, Sept. 21, 2012. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. (AP Photo/Marcio Jose Sanchez)  Photo: Marcio Jose Sanchez, Associated Press / SF  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft,...  The Space Shuttle Endeavour with Coit Tower in the foreground as it flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez - San Fran, The Chronicle / SF  The Space Shuttle Endeavour with Coit Tower in the foreground as it...  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft, flies above the Golden Gate Bridge past the Marin Headlands in Sausalito, Calif., Friday, Sept. 21, 2012. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. (AP Photo/San Francisco Chronicle, Paul Chinn) NORTHERN CALIFORNIA MANDATORY CREDIT PHOTOG & CHRONICLE; MAGS OUT; NO SALES  Photo: Paul Chinn, Associated Press / SF  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft,...  The Space Shuttle Endeavor flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez - San Fran, The Chronicle / SF  The Space Shuttle Endeavor flew over the Bay Area on Friday,...  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft, flies past Transamerica Pyramid on Friday, Sept. 21, 2012, in San Francisco. Endeavour is making a final trek across the country to the California Science Center in Los Angeles, where it will be permanently displayed. (AP Photo/San Francisco Chronicle, Carlos Avila Gonzalez) NORTHERN CALIFORNIA MANDATORY CREDIT PHOTOG & CHRONICLE; MAGS OUT; NO SALES.  Photo: Carlos Avila Gonzalez, Associated Press / SF  Space Shuttle Endeavour mounted on NASA's Shuttle Carrier Aircraft,...  The Space Shuttle Endeavor with the Bay Bridge in the foreground as it flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez - San Fran, The Chronicle / SF  The Space Shuttle Endeavor with the Bay Bridge in the foreground as...  Spectators watch from the top of a building on Treasure Island as they wait for the Space Shuttle Endeavour to fly over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez - San Fran, The Chronicle / SF  Spectators watch from the top of a building on Treasure Island as...  The Space Shuttle Endeavour with Coit Tower in the foreground as it flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez, The Chronicle / SF  The Space Shuttle Endeavour with Coit Tower in the foreground as it...  The Space Shuttle Endeavour with Alcatraz in the foreground as it flew over the Bay Area on Friday, September 21, 2012, in San Francisco, Calif., on its farewell voyage before it is converted to a museum in Los Angeles.  Photo: Carlos Avila Gonzalez, The Chronicle / SF  The Space Shuttle Endeavour with Alcatraz in the foreground as it...
OVER AND OUT NASA spacecraft Endeavour delights thousands in Bay Area flyover  Work stopped, mouths gaped and cameras clicked as thousands of Bay Area residents whooped, hollered and gawked Friday morning when the space shuttle Endeavour took a last leisurely whirl over the region.  The huge spacecraft, flying piggyback on a Boeing 747, appeared first over the hazy East Bay hills, then slowly flew north before making a big turn to fly above the Golden Gate Bridge, wowing thousands of people who had gathered to snap pictures of the spacecraft buzzing the bay.  The shuttle took off from Edwards Air Force Base in the Mojave Desert around 8:30 a.m. and flew over Sacramento before heading west to the Bay Area.  The excited babble of anticipation turned to solemn silence as soon as the shuttle appeared, glimmering against the blue sky.  20,000 at Moffett FieldAfter passing over San Francisco, the spacecraft headed south for a low-level pass over Moffett Field and NASA Ames Research Center in Mountain View, where nearly 20,000 gathered to see the flyby.  Among them was former Endeavour astronaut Stephen Robinson, who said his time in the shuttle was &quot;completely outlandish and audacious.&quot;