A mission specialist and two payload specialists busy themselves in the Spacelab 1 module aboard the shuttle Columbia. Left to right are payload specialists Ulf Merbold and Byron K. Lichtenberg; and Mission Specialist Robert A. R. Parker. Parker is partially obscured by a deployed instrument of the fluid physics module at the materials sciences double rack. Merbold wears a head band-like device and a recorder as part of an overall effort to learn more aboutr space adaptation.
