Across
- 3. The smallest planet
- 9. The second planet from the sun
- 10. The four largest moons of Jupiter
- 13. The time it takes an object to complete one rotation
- 14. A small, rocky particle that moves through space
- 15. The largest planet in the solar system
Down
- 1. Made of gas, dust, and ice
- 2. The time it takes an object to travel once around the sun
- 4. The least dense planet
- 5. The average distance from Earth to the sun
- 6. A small, rocky object
- 7. Has two very small and irregularly shaped moons
- 8. Large bodies of water exist on this planet
- 11. Triton, is its largest moon
- 12. Has a system of narrow, dark rings