Across
- 4. known for its rings
- 8. A theoretical source of long-period comets
- 12. A ring of icy objects beyond the orbit of Neptune; includes Pluto
- 14. The orbital location of Trojan asteroids
- 15. The accidental discovery of this dwarf planet led to the discovery of the Asteroid Belt
- 16. The closest planet to the Sun
Down
- 1. contains large quantities of frozen water
- 2. A type of asteroid containing clay and silicates
- 3. Demoted to a dwarf planet in 2006
- 5. meters per second squared (m/s^2) is the unit for which fundamental force?
- 6. The Jovian planet group got its name from this planet
- 7. the suffix applied when naming minerals
- 9. the dust and gas tail that forms when a comet passes close to the sun
- 10. Planet that rotates on its side (rotates roughly 90 degrees to its plane of orbit)
- 11. The hottest planet
- 13. A dominant gravitational object in its orbit