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The two Soviet crewmen for the Apollo-Soyuz Test Project mission are photographed at the launch pad at the Baikonur Cosmodrome in Kazakhstan on the morning of the Soviet ASTP liftoff on July 15, 1975. They are cosmonauts Aleksey A. Leonov (left), commander; and Valeriy N. Kubasov, flight engineer. Leonov is waving to well-wishers at the launch pad. The Soviet ASTP launch preceded the American ASTP Apollo liftoff by seven and one-half hours. The American and Soviet spacecraft were docked in Earth orbit for a total of about 47 hours on July 17-19, 1975