On April 9, 1959, NASA introduced its first astronaut class, the Mercury 7.
On April 9, 1959, NASA introduced its first astronaut class, the Mercury 7. Front row, left to right: Walter M. Schirra, Jr., Donald K. “Deke” Slayton, John H. Glenn, Jr., and M. Scott Carpenter; back row, Alan B. Shepard, Jr., Virgil I. “Gus” Grissom, and L. Gordon Cooper, Jr.
Image Credit: NASA