NASA's first astronaut class, the Mercury 7 pose for a group picture in Cape Canaveral, Florida, U.S. on April 9, 1959. Front row L-R: Walter M. Schirra, Jr., Donald K. “Deke” Slayton, John H. Glenn, Jr., and M. Scott Carpenter; Back row L-R, Alan B. Shepard, Jr., Virgil I. “Gus” Grissom, and L. Gordon Cooper, Jr. (Photo by Reuters/NASA)
