Space Shuttle Retirement Act - Makes the following locations the homes of the retiring Space Shuttles of the National Aeronautics and Space Administration (NASA): (1) the Kennedy Space Center Visitor Complex in Florida for Shuttle Atlantis, (2) the California Science Center in California for Shuttle Enterprise, (3) the Steven F. Udvar-Hazy Center in Virginia for Shuttle Discovery, and (4) the Johnson Space Center in Texas for Shuttle Endeavour.