Across
- 2. planet that is named after the Roman god of war
- 4. hottest planet
- 6. largest moon in solar system
- 8. brightest comet
- 10. name given to the invisible material once thought to occupy all space
Down
- 1. force that bends light rays travelling though the universe
- 2. the term for a natural satellite
- 3. largest moon of Saturn
- 5. Where is the chromosphere
- 6. first man in space
- 7. first planet in the solar system
- 9. planet that is the densest