| Answer | Crossword Clue |
|---|---|
| MERC | First planet: Abbr. |
| EARTH | First planet, alphabetically |
| URANUS | First planet discovered using a telescope |
| LOIS | First name at the Daily Planet |
| ORK | Planet first mentioned on "Happy Days" |
| CERES | Body in our solar system that was considered a planet in the first half of the 19th century |
