. . . . "0"^^ . . "Mercury program"^^ . . . . "05900010-n"^^ . "105900010"^^ . "105556431"@en-us . "0"^^ . "104534894"@en-us . "Mercury program"@en-us . . "a program of rocket-powered flights undertaken by US between 1961 and 1963 with the goal of putting a man in orbit around the earth; \"under the Mercury program each flight had one astronaut\""@en-us . .