Across
- 2. Is Mercury visible or invisible to the naked eye?
- 5. First name of a famous astronomer who observed many planets including Mercury
- 6. The type of mythology that contains the god that Mercury was named after
- 7. The metal that Mercury is mostly made out of
- 8. The number of moons Mercury has
Down
- 1. The name of the planet this crossword is about
- 3. A word to describe Mercury
- 4. The direction Mercury rotates