List of interplanetary voyages 1970s 1970s

| Spacecraft | Destination | Launched | Closest_approach | Time_elapsed |
|---|---|---|---|---|
| Voyager 2 | Neptune | 20 August 1977 | 25 August 1989 | 4389 days (12 yr, 6 days) |
| Voyager 1 | Jupiter | 5 September 1977 | 5 March 1979 | 547 days (1 yr, 6 mo, 1 d) |
| Voyager 1 | Saturn | 5 September 1977 | 12 November 1980 | 1165 days (3 yr, 2 mo, 8 d) |
| ICE | Comet 21P/Giacobini-Zinner | 12 August 1978 | 11 September 1985 | 2588 days (7 yr, 1 mo) |
| ICE | Comet 1P/Halley | 12 August 1978 | 28 March 1986 | 2786 days (7 yr, 7 mo, 17 d) |
| Venera 11 | Venus | 9 September 1978 | 25 December 1978 | 108 days (3 months, 17 days) |
| Venera 12 | Venus | 14 September 1978 | 19 December 1978 | 97 days (3 months, 6 days) |