| Hint | Object |
|---|
| The most volcanic object in the solar system | |
| The only large moon to have a retrograde orbit (it orbits in the opposite direction to it's planet's rotation) | |
| The largest body in the solar system, besides the sun | |
| Strange, egg-shaped dwarf planet in the Kuiper Belt | |
| The larger of Mars' two moons | |
| The ninth largest object known to be orbiting the sun | |
| The largest moon in the solar system | |
| Demoted from planet status in 2006 | |
| | Hint | Object |
|---|
| Smallest (by mass) gas giant | |
| Smallest (by volume) gas giant | |
| Dwarf planet between Mars and Jupiter | |
| The closest planet to the sun | |
| The only object (other than Earth) humans have visited | |
| This planet has 62 known moons | |
| Terrestrial planet with the densest atmosphere | |
|
The Nine Planets 
Digits of Pi 
Multiplication Table
