| Answer | Crossword Clue |
|---|---|
| URANIAN | Hypothetical man of a planet. |
| MARSMEN | Hypothetical people of another planet. |
| martians | of, pertaining to, or like the planet Mars or its hypothetical inhabitants |
| martian | of, pertaining to, or like the planet Mars or its hypothetical inhabitants |
| MARTIAN | Hypothetical visitor from another planet. |
| vulcans | hypothetical planet nearest the sun whose existence was erroneously postulated to account for perturbations in Mercury's orbit |
| vulcan | hypothetical planet nearest the sun whose existence was erroneously postulated to account for perturbations in Mercury's orbit |
