United Space Alliance spacesuit technicians help STS-133 Pilot Eric Boe put before he enters Discovery.

In the White Room at Launch Pad 39A at NASA's Kennedy Space Center in Florida, United Space Alliance spacesuit technicians help STS-133 Pilot Eric Boe put on the parachute for his launch-and-entry suit before he enters space shuttle Discovery through the crew hatch in the background. Boe last piloted space shuttle Endeavour during its STS-126 mission back in 2008.

Scheduled to lift off Feb. 24 at 4:50 p.m. EST, Discovery and its crew will deliver the Permanent Multipurpose Module, packed with supplies and critical spare parts, as well as Robonaut 2, the dexterous humanoid astronaut helper, to the International Space Station. Discovery, which will fly its 39th mission, is scheduled to be retired following STS-133. This will be the 133rd Space Shuttle Program mission and the 35th shuttle voyage to the space station. For more information on the STS-133 mission, visit www.nasa.gov/mission_pages/shuttle/shuttlemissions/sts133/. Photo credit: NASA/Sandra Joseph and Kevin O'Connell