Discovery at Kennedy Space Center (8 images)

This NASA image released on September 21, 2010 shows Space Shuttle Discovery as it is moved to Launch Pad 39A at NASA's Kennedy Space Center in Florida. NASA is making final preparations to launch Discovery on mission STS-133, service mission to install the module on the International Space Station. This is the second to last flight for the shuttle program. UPI/Jim Grossman/NASA.

This NASA image released on September 10, 2010 shows Space Shuttle Discovery as it is moved to be attached to the external fuel tank and solid rocket boosters inside the VAB at NASA's Kennedy Space Center in Florida. NASA is making final preparations to launch Discovery on mission STS-133, service mission to install the module on the International Space Station. This is the second to last flight for the shuttle program. UPI/Jack Pfaller/NASA.

This NASA image released on October 7, 2010 shows Space Shuttle Discovery as it sits on Launch Pad 39A at NASA's Kennedy Space Center in Florida. NASA is making final preparations to launch Discovery on mission STS-133, service mission to install the module on the International Space Station. This is the second to last flight for the shuttle program. UPI/Troy Cryder/NASA

This NASA image released on October 15, 2010 shows the crew of mission STS-133 as they take a group portrait during a break from a simulated launch countdown on the 195-foot level of Launch Pad 39A, at NASA's Kennedy Space Center in Florida. From left are, Pilot Eric Boe, Mission Specialist Michael Barratt, Commander Steve Lindsey, and Mission Specialists Tim Kopra, Nicole Stott, and Alvin Drew. NASA is making final preparations to launch Space Shuttle Discovery on a service mission to the International Space Station on November 1, 2010. This is the second to last flight in the space shuttle program. UPI//Kim Shiflett/NASA