Walter M. "Wally" Schirra Jr., one of America's original seven astronauts, has died at the age of 84, said NASA.
Schirra, said NASA, died of natural causes.
Chosen from the Navy to become one of NASA's Mercury astronauts in 1959, Schirra went on to become the first man ever to make three flights in space.
Schirra was a colorful, jovial man, but also a serious pilot. "Levity is appropriate in a dangerous trade," he once said in a Life magazine profile.