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Astronaut Sally K. Ride, STS-7 mission specialist, displays the array of tools at her disposal on the mid deck of the Earth-orbiting Space Shuttle Challenger. Dr. Ride is positioned near the monodisperse latex reactor (MLR) experiment. They cylinder near her elbow is the actual reactor and the device next to it at right frame edge is the MRL apparatus container. Dr. Ride and four other astronauts are sharing duties aboard the reusable spacecraft for a six-day space mission full of “firsts.” This photograph was made with a 35mm camera. It was among the visuals used by crewmembers at their post-flight press conference.