April 02, 1959

Chosen from a field of 110 candidates, seven test pilots-Air Force Capts. L. Gordon Cooper Jr., Virgil I. “Gus” Grissom, and Donald K. “Deke” Slayton; Navy Lt. Cmdrs. Walter M. Schirra Jr., and Alan B. Shepard Jr., and Lt. M. Scott Carpenter; and Marine Lt. Col. John H. Glenn Jr.-are announced as the Project Mercury astronauts.