WHERE IT ALL BEGAN: The four surviving Mercury astronauts, from left, Gordon Cooper, Wally Schirra,


WHERE IT ALL BEGAN: The four surviving Mercury astronauts, from left, Gordon Cooper, Wally Schirra, Scott Carpenter and John Glenn, stand in front of a Mercury Atlas rocket, center, at the Kennedy Space Center. The men were on hand to celebrate 40 years of Americans in orbit.

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