STS-55 MS3 Harris holds turbine blade sample at SL-D2 Rack 8 Werkstofflabor

STS055-106-048 (26 April-6 May 1993) --- Astronaut Bernard A. Harris, Jr., mission specialist, works with a sample at the Heater Facility, part of the Werkestofflabor material sciences laboratory in the Spacelab D-2 Science Module aboard the Space Shuttle Columbia. Harris was joined by four other NASA astronauts and two German payload specialists for the 10-day mission aboard the Space Shuttle Columbia.