Across
- 3. The only planet with one moon.
- 6. The smallest planet.
- 10. Pluto's largest moon.
- 13. One of Mar's moons.
- 16. A huge canyon on Mars's surface.
- 17. A dark blue planet with incredibly strong winds.
- 19. The largest of the dwarf planets.
- 20. The word for the point in space that the binary Pluto-Charon system revolves around.
- 22. The number of tails most comets have as they approach the inner solar system.
- 23. The nearest celestial body to the Earth.
- 24. The first dwarf planet discovered and the largest asteroid in the asteroid belt.
- 25. A planet that appears to "roll" through the solar system.
- 27. The largest volcano on Mars.
- 31. The huge area of icy bodies where most short period comets come from.
- 32. A small chunk of asteroid that burns up in Earth's amtmosphere.
- 35. The only moon in the solar system that revolves retrograde, or opposite, of the planet's (Neptune) motion.
- 36. The largest planet.
- 37. A small celestial body made primarily of rocky material.
Down
- 1. A chunk of asteroid big enough that doesn't entirely burn up and strikes Earth.
- 2. One of Mar's moons.
- 4. The shape of all celestial bodies that revolve around the sun.
- 5. A Galilean moon that definitely has water ice.
- 7. The most massive dwarf planet.
- 8. A small celestial body made primarily of icy material.
- 9. A massive storm on Jupiter that's at least hundreds of years old.
- 11. This planet would float in a bathtub
- 12. The largest moon in the solar system.
- 14. The giant spherical zone of icy bodies that houses long period comets and overlaps with the same zone from the next star.
- 15. The hottest planet.
- 18. One of Uranus's moons that's named after an impish creature from A Midsummer Night's Dream
- 21. A moon of Saturn that has organic molecules on it.
- 26. The location of the majority of the asteroids.
- 28. The reddest planet.
- 29. The number of moon's of Pluto.
- 30. A small asteroid chunk that hasn't yet entered Earth's atmosphere.
- 33. The third largest moon of Jupiter.
- 34. The number of planets revolving around the sun.