Payload specialist
Person trained for flights of a specific payload on a crewed spacecraft mission
Payload specialist
A payload specialist (PS) is an individual selected and trained by commercial or research organizations for flights of a specific payload on a crewed spacecraft mission. People assigned as payload specialists included individuals selected by the research community, a company or consortium flying a commercial payload aboard the spacecraft, and non-NASA astronauts designated by international partners. The term refers to both the individual and to the position on the Shuttle crew.
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