The document lists the 7 Mercury astronauts and their missions in NASA's first human spaceflight program. It provides the names of the 6 astronauts who each conducted a Mercury mission between 1961-1963, flying the Freedom 7, Liberty Bell 7, Friendship 7, Aurora 7, Sigma 7, and Faith 7 missions respectively, as well as their dates and accomplishments, which paved the way for future NASA programs.