| Answer | Crossword Clue |
|---|---|
| MARS | Vikings explored it |
| MARS | Where Vikings explored? |
| MARS | What two Vikings have explored |
| OCEAN | Cousteau explored it |
| ASIA | Polo explored it |
| NILE | Livingstone explored it |
| MARS | Pathfinder explored it |
| GREENLAND | Eric the Red explored it |
| ENG | Henry Hudson explored for it: Abbr. |
