On September 12, 1992, Dr. Mae Jemison became the first African American woman to travel in space. A physician who served in the Peace Corps, Dr. Jemison fulfilled a childhood dream by applying to join NASA as an astronaut—becoming a Mission Specialist on Space Shuttle Endeavour. After leaving NASA, Dr. Jemison devoted herself to science education. We celebrate Dr. Jemison’s drive to discover—here and in space.