STS-55 German Payload Specialist Walter freefloats inside the SL-D2 module

STS055-219-024 (26 April-6 May 1993) --- Ulrich Walter, STS-55 payload specialist representing the German Aerospace Research Establishment (DLR), demonstrates the microgravity aboard the Spacelab D-2 science module in Columbia's cargo bay. The module served as his space laboratory and that of his six crewmates for l0 days.