when did mae c jemison join nasa?
<answer> Mae Carol Jemison joined NASA in 1987. <context> Mae Carol Jemison (born October 17, 1956) is an American engineer, physician and NASA astronaut. She became the first African-American woman to travel in space when she went into orbit aboard the Space Shuttle Endeavour on September 12, 1992. After medical school and a brief general practice, Jemison served in the Peace Corps from 1985 until 1987, when she was selected by NASA to join the astronaut corps. She resigned from NASA in 1993 to found a company researching the application of technology to daily life.