 Manned Venus flyby

“Manned Venus Flyby” was a 1967–1968 NASA proposal to send three astronauts on a flyby mission to Venus in an Apollo-derived spacecraft in 1973–1974, using a gravity assist to shorten the return journey to Earth.NASA considered a manned flyby of Venus in the mid-1960s as part of the Apollo Applications Program, using hardware derived from the Apollo program.