Ockels and Guy Bluford working in Spacelab

ESA's Wubbo Ockels, Payload Specialist on STS-61A, and NASA Mission Specialist Guion Bluford (right) during the Spacelab D1 mission which was under operational management of the German space research institute, DFVLR. This was the fourth flight of the ESA-developed Spacelab on the Space shuttle.