Deep-space Rendezvous
| Date (GMT) | Spacecraft | Event | Remarks |
|---|---|---|---|
| 10 February | Galileo | Flyby of Venus | Gravity assist; Closest approach: 16,000 kilometres (9,900 mi) |
| 19 March | Hiten | Flyby of the Moon | |
| 19 March | Hagoromo | Selenocentric orbit injection | |
| 10 August | Magellan | Cytherean orbit injection | |
| 8 December | Galileo | 1st flyby of the Earth | Gravity assist; Closest approach: 960 kilometres (600 mi) |
Read more about this topic: 1990 In Spaceflight