STS-47 was the 50th NASA Space Shuttle mission of the program, as well as the second mission of the Space Shuttle Endeavour. The mission mainly involved conducting experiments in life and material sciences inside Spacelab-J, a collaborative laboratory inside the shuttle's payload bay sponsored by NASA and the National Space Development Agency of Japan (NASDA). This mission carried Mamoru Mohri, the first Japanese astronaut aboard the shuttle, Mae Jemison, the first African-American woman to go to space, and the only married couple to fly together on the shuttle, Mark C. Lee and Jan Davis, contrary to NASA policy.