| A | B |
|---|
| first attempted Venus flyby by U.S. | Mariner 1 |
| Final Sputnik project to attempt Venus flyby in 1962 | Sputnik 21 |
| country credited with first successful Venus flyby | U.S. |
| First Venus lander | Venera 7 |
| first country to land on Venus successfully | USSR |
| Only Venus probe sent in the 1990's | Cassini |
| Major objective of mission was to map Venus | Magellan Probe |
| Vega 1 and 2 used by Soviets to study this space object | Comet Halley |
