Mariner 10 By haloreach33 Period: Nov 3, 1972 to Mar 16, 1976 Mariner 10 Nov 3, 1973 Mariner 10 Launch Mariner 10 was launched. Feb 5, 1974 Mariner 10 Venus encounter This was the first encounter(Venus) Mar 29, 1974 Mercury Flyby 1 Mercury flyby 1 was on March 29, 1974. Sep 21, 1974 Mercury Flyby 2 Mercury flyby 2 was on September 21, 1974. Mar 16, 1975 Mercury flyby 3 Mar 24, 1975 Contact was lost. Contact with Mariner 10 was lost on March 24 ,1975.
