Across
- 2. Form a belt in Solar System
- 5. We can find this on Earth or Venus
- 10. Thick on Venus, thin on Mercury
- 11. Ingredient of life
- 13. The moon
- 15. A metallic planet
Down
- 1. Term for objects smaller than planet
- 3. The center of solar system
- 4. Orbiting the planet Mars
- 6. The satellite of Earth
- 7. Water on Mars
- 8. Hottest planet
- 9. Path of the planet
- 12. A unit to time one successful orbit around the Sun
- 14. Makes the planet Mars reddish in color
- 16. A big object between Mars and Jupiter