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Astronauts Conrad and Kerwin conduct a human vestibular function experiment

(March 1, 1973) Astronaut Charles Conrad Jr (1930-1999), commander of the first manned Skylab mission, serves as a subject in Human Vestibular Function Experiment M131 during Skylab training at Johnson Space Center. Scientist-astronaut and physician Joseph P Kerwin (b 1932), science pilot of the mission, goes over a checklist. The two men are in the work-and-experiments compartment of the crew quarters of the Skylab Orbital Workshop (OWS) trainer at Johnson Space Center in Houston. (Source: NASA/Johnson Space Center [Houston]. NASA ID: S73-20678. Public domain.)

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