| Answer | Crossword Clue |
|---|---|
| ALIEN | Visitor from beyond our solar system |
| ALIEN | Visitor from beyond the solar system |
| CERES | Body in our solar system that was considered a planet in the first half of the 19th century |
| terrestrial | (of a planet) Similar in size or composition to the earth, esp. being one of the four inner planets of our solar system |
| extrasolar | beyond the solar system |
| OORT | .. cloud: solar system region beyond Pluto |
| PLANETX | Hypothetical solar system body beyond Neptune |
| NEBULES | Cloudlike masses beyond the solar system: Rare. |
| PLANETX | Hypothetical body in the solar system beyond Neptune |
| ultramundane | situated beyond the world, or beyond the limits of the solar system |
