Final mission for shuttle Endeavour
Endeavour has embarked on its final flight to the International Space Station.
The space shuttle Endeavour sits on launch pad 39-A at the Kennedy Space Center in Cape Canaveral, Florida. Endeavour has embarked on its final flight to the International Space Station.Justin Sullivan/Getty Images
The space shuttle Endeavour STS-134 sits on launch pad 39A after the rollback of the Rotating Service Structure at the Kennedy Space Center in Cape Canaveral, Florida.Scott Audette/REUTERS
Hats and t-shirts with the space shuttle are displayed by a vendor ahead of Endeavour's final launch in Titusville, Florida.Justin Sullivan/Getty Images
A woman looks at t-shirts with the space shuttle Endeavour being sold by a vendor ahead of Endeavour's final launch.Justin Sullivan/Getty Images
T-shirts with the space shuttle Endeavour are sold by a vendor ahead of Endeavour's final launch in Titusville, Florida.Justin Sullivan/Getty Images
A message is seen on a sign ahead of space shuttle Endeavour's final launch in Titusville, Florida.Justin Sullivan/Getty Images
The crew of space shuttle Endeavour, from left, Canadian born U.S. astronaut Greg Chamitoff, mission specialist Drew Feustel, European Space Agency astronaut Roberto Vittori, of Italy,, mission specialist Mike Fincke, British born U.S. astronaut, pilot Greg Johnson and commander Mark Kelly, leave the Operations and Checkout building on their way to Pad 39A to board the shuttle at the Kennedy Space Center in Cape Canaveral, Fla..John Raoux/AP
Spectators line a pier to view space shuttle Endeavour's final launch in Titusville, Florida. Hundreds of thousands of spectators are were expected to come out to watch space shuttle Endeavour as it embarked on its final flight to the International Space StationJustin Sullivan/Getty Images
The space shuttle Endeavour lifts off from Launch Pad 39A at the Kennedy Space Center in Cape Canaveral, Florida. After 20 years, 25 missions and more than 115 million miles in space, Endeavour is on its final flight to the International Space Station before being retired and donated to the California Science Center in Los Angeles. Mission STS-134 will deliver the Express Logistics Carrier-3 (ELC-3) and the Alpha Magnetic Spectrometer (AMS-2) to the International Space Station.Mark Wilson/Getty Images
People watch as the space shuttle Endeavour lifts off from the Kennedy Space Center in Cape Canaveral, Florida. Endeavour carries a crew of six astronauts on a mission to the International Space Station.Hans Deryk/REUTERS
The Space Shuttle Endeavour lifts off from launchpad 39A at the Kennedy Space Center in Florida. The space shuttle Endeavour blasted off Monday toward the International Space Station on the penultimate flight for the US shuttle program. "We want to thank all the tens of thousands of employees who have put their hands on this incredible ship," shuttle commander Mark Kelly said moments before liftoff at 8:56.Don Emmert/AFP/Getty Images
In this handout provided by National Aeronautics and Space Administration (NASA), officials watch from Firing Room 4 as NASA space shuttle Endeavour lifts off from Launch Pad 39A at the Kennedy Space Center in Cape Canaveral, Florida.Bill Ingalls/NASA