American astronaut Sally Ride (1951-2012, third from right) and five other astronaut candidates pose for a picture in the crew systems laboratory at the Johnson Space Center (JSC) with the personnel rescue enclosure (PRE) or 'rescue ball' and an unoccupied Apollo EMU. Sally Ride was the first American woman in space and the third woman in space overall. She was a mission specialist on STS-7 aboard Challenger in 1983 and flew again onto Challenger in 1984 as part of the STS 41-G mission. From left to right in this image are: Rhea Seddon, Kathryn D. Sullivan, Judith A. Resnik, Sally K. Ride, Anna L. Fisher and Shannon W. Lucid.