Dr. Mae C. Jemison, the first black female astronaut candidate, steps through the hatch of a space shuttle trainer at the Johnson Space Center in Houston, Texas, August 25, 1987. Jemison was one of 15 candidates that met the press on Monday. The candidate class, first since the Challenger disaster, will start training this week to become astronauts. (Photo by Ed Kolenovsky/AP Photo)
