List of interplanetary voyages 1970s 1970s

| Spacecraft | Destination | Launched | Closest_approach | Time_elapsed |
|---|---|---|---|---|
| Pioneer 10 | Jupiter | 3 March 1972 | 3 December 1973 | 641 days (1 yr, 9 mos, 1 d) |
| Pioneer 11 | Jupiter | 6 April 1973 | 4 December 1974 | 608 days (1 yr, 7 mo, 29 d) |
| Pioneer 11 | Saturn | 6 April 1973 | 1 September 1979 | 2340 days (6 yr, 4 mo, 27 d) |
| Mars 4 | Mars | 21 July 1973 | 10 February 1974 | 205 days (6 months, 21 days) |
| Mars 6 | Mars | 5 August 1973 | 12 March 1974 | 220 days (7 months, 8 days) |
| Mars 7 | Mars | 9 August 1973 | 9 March 1974 | 213 days (7 months, 1 day) |