Jemison served as NASA's first-ever designated science mission specialist during the STS-47 Spacelab-J mission.
When Mae Jemison launched aboard STS-47 on September 12, 1992, she did so in the newly created role of science mission specialist, the first time NASA had designated an astronaut with this specific title and responsibility set. The role required Jemison to conduct and coordinate numerous life sciences and materials science experiments as part of the Spacelab-J mission, a joint venture between NASA and the National Space Development Agency of Japan (NASDA).
As science mission specialist, Jemison was responsible for around 44 experiments related to materials processing and life sciences, including bone cell research and studies on weightlessness's effects on human physiology. Her scientific rigor, combined with her medical background as a physician, made her uniquely suited to this pioneering position.
This designation reflected NASA's evolving mission architecture, incorporating dedicated scientific expertise into shuttle crews beyond the traditional pilot and mission specialist roles. It highlighted the growing importance of microgravity research for long-duration spaceflight and international collaboration.
Jemison's performance in this role helped validate the science mission specialist concept for future missions and underscored her scientific credibility, distinguishing her achievement in space not merely as a symbolic first, but as a substantive scientific contribution to space-based research programs.