NASA introduced the Project Mercury astronauts to the world on April 9, 1959, only six months after the agency was established. Known as the Mercury Seven or Original Seven, they are (front row, left to right) Walter M. "Wally" Schirra Jr., Donald K. "Deke" Slayton, John H. Glenn Jr., M. Scott Carpenter, (back row) Alan B. Shepard Jr., Virgil I. "Gus" Grissom and L. Gordon Cooper, Jr.
Image Number: SI-2004-28035
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