| XS-11 (The Excess Eleven) | |
|---|---|
 Group 6 astronauts. Back row, L-R: Henize, England, Holmquest, Musgrave, Lenoir. Front row, L-R: Chapman, Parker, Thornton, Llewellyn. Flanking the group are Allen (left) and O'Leary (right) | |
| Year selected | 1967 |
| Number selected | 11 |
NASA Astronaut Group 6 (the "XS-11", "Excess Eleven") was a group of eleven astronauts announced by NASA on August 11, 1967, the second group of scientist-astronauts. Given the lack of post-Apollo program funding, with the Apollo Applications Program being absorbed into the Skylab program, and NASA's existing surplus of astronauts, they did not expect any of the group to fly in space. Director of Flight Crew Operations Deke Slayton had planned to hire 20 to 30 new scientist-astronauts, but NASA found that only 11 of the 923 applicants were qualified, and hired them all.
When the group reported to the Manned Spacecraft Center, Slayton told them that "We don't need you around here". He offered to accept their resignations, and promised ground assignments if they did not quit, but warned them to not fool themselves that they would soon fly in space. With self-deprecation, the men named themselves the "XS-11", or "Excess Eleven".
The group would be the last group selected by NASA for over a decade. The seven members who stayed with NASA after the Apollo Program ended went on to form the core of early Space Shuttle mission specialists, accomplishing a total of 15 flights between 1982 and 1996.