Across
- 2. Most prominent chemical in Mars' atmosphere
- 5. Does Mars orbit the Sun faster or slower than Earth?
- 7. Number of moons in the solar system larger than Mars
- 8. Largest mountain in the solar system
- 9. Roman god of
Down
- 1. First country to reach Mars
- 3. The larger of Mars' two moons
- 4. Reason Mars is red
- 5. Instrument used to locate habitable areas on Mars
- 6. Current Mars mission