| Answer | Crossword Clue |
|---|---|
| PLUTO | "Demoted" object in the solar system |
| CERES | Largest asteroid in the solar system |
| GANYMEDE | Largest moon in the solar system |
| ERIS | Largest plutoid in the solar system |
| CERES | The largest asteroid in the solar system |
| ERIS | Largest dwarf planet in the solar system |
| SATURN | Second-largest planet in the solar system |
| TITAN | Second-largest moon in the solar system |
| PLANETX | Hypothetical body in the solar system beyond Neptune |
| OUTERMOST | Like Neptune among the planets in the solar system |
| XENA | Dwarf planet in the outer reaches of the solar system |
| TRITON | Largest moon in the solar system with a retrograde orbit |
| CERES | Body in our solar system that was considered a planet in the first half of the 19th century |
