Across
- 2. What Mars' atmosphere is mostly made up of
- 3. The second of Mars' moons
- 5. What the soil is mostly made up of
- 9. How long a Martian day is
Down
- 1. The number of days in a Martian Year
- 4. Owner of this crossword puzzle
- 6. One of Mars' moons
- 7. The number of planets away from the sun
- 8. Reaason why Mars is red