Table:
text: List of interplanetary voyages
1960s
1960s
Spacecraft Destination Launched Closest_approach Time_elapsed
Venera 1 Venus 12 February 1961 19 May 1961 97 days (3 months, 8 days)
Mariner 2 Venus 27 August 1962 14 December 1962 110 days (3 months, 18 days)
Mars 1 Mars 1 November 1962 19 June 1963 231 days (7 months, 19 days)
Zond 1 Venus 2 April 1964 14 July? 1964 104 days (3 months, 13 days)
Mariner 4 Mars 28 November 1964 15 July 1965 230 days (7 months, 18 days)
Zond 2 Mars 30 November 1964 6 August 1965 250 days (8 months, 8 days)

Question: What launched Mariner 4 as the starship of 1960s interplanetary travel?