CAPE CANAVERAL, Fla. -- From the upper levels of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, space shuttle Discovery is lowered into high bay 3 where the external fuel tank and solid rocket boosters are already stacked on the mobile launcher platform. Discovery will be mated with the stack. After additional preparations are made, the shuttle will be rolled out to Launch Pad 39A for a targeted launch on Feb. 12. Discovery will carry the final starboard truss (S6) in the assembly of the International Space Station. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In the upper levels of the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, space shuttle Discovery is moved toward high bay 3 where the external fuel tank and solid rocket boosters are already stacked on the mobile launcher platform. Discovery will be lowered onto the platform and mated with the stack. After additional preparations are made, the shuttle will be rolled out to Launch Pad 39A for a targeted launch on Feb. 12. Discovery will carry the final starboard truss (S6) in the assembly of the International Space Station. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, space shuttle Discovery is lowered alongside the external fuel tank and solid rocket boosters already stacked on the mobile launcher platform. Discovery will be mated with the stack. After additional preparations are made, the shuttle will be rolled out to Launch Pad 39A for a targeted launch on Feb. 12. Discovery will carry the final starboard truss (S6) in the assembly of the International Space Station. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, space shuttle Discovery is lowered into high bay 3 alongside the external fuel tank and solid rocket boosters are already stacked on the mobile launcher platform. Discovery will be mated with the stack. After additional preparations are made, the shuttle will be rolled out to Launch Pad 39A for a targeted launch on Feb. 12. Discovery will carry the final starboard truss (S6) in the assembly of the International Space Station. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, space shuttle Discovery is suspended vertically above the transfer aisle. The shuttle will be lifted into high bay 3 where it will be mated with its external fuel tank and solid rocket boosters on the mobile launcher platform. After additional preparations are made, the shuttle will be rolled out to Launch Pad 39A for a targeted launch on Feb. 12. Discovery will carry the final starboard truss (S6) in the assembly of the International Space Station. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, space shuttle Discovery is raised to a vertical position above the transfer aisle. The shuttle will be lifted into high bay 3 where it will be mated with its external fuel tank and solid rocket boosters on the mobile launcher platform. After additional preparations are made, the shuttle will be rolled out to Launch Pad 39A for a targeted launch on Feb. 12. Discovery will carry the final starboard truss (S6) in the assembly of the International Space Station. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, space shuttle Discovery is lifted into the upper levels for transfer to high bay 3. The shuttle will then be lowered onto the mobile launcher platform for mating with its external fuel tank and solid rocket boosters. After additional preparations are made, the shuttle will be rolled out to Launch Pad 39A for a targeted launch on Feb. 12. Discovery will carry the final starboard truss (S6) in the assembly of the International Space Station. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, space shuttle Discovery is lifted into the upper levels for transfer to high bay 3. The shuttle will then be lowered onto the mobile launcher platform for mating with its external fuel tank and solid rocket boosters. After additional preparations are made, the shuttle will be rolled out to Launch Pad 39A for a targeted launch on Feb. 12. Discovery will carry the final starboard truss (S6) in the assembly of the International Space Station. Photo credit: NASA/Jack Pfaller

CAPE CANAVERAL, Fla. -- In the Vehicle Assembly Building at NASA's Kennedy Space Center in Florida, space shuttle Discovery is lifted above the transfer aisle. The shuttle will be raised to a vertical position and lifted into high bay 3 where it will be mated with its external fuel tank and solid rocket boosters on the mobile launcher platform. After additional preparations are made, the shuttle will be rolled out to Launch Pad 39A for a targeted launch on Feb. 12. Discovery will carry the final starboard truss (S6) in the assembly of the International Space Station. Photo credit: NASA/Jack Pfaller