Across
- 2. The belt that is the icy, donut-shaped region beyond Neptune's orbit
- 4. The planet that rotates at a near 90 degree angle from its orbital plane
- 6. The name of the group that we put the four, outer gaseous planets in
- 9. The planet known as the Giant Among Giants
- 10. The leading theory on the formation of the universe (no spaces)
- 12. The third largest dwarf planet
- 13. The last name of the astronomer that discovered dwarf planet Ceres
- 14. The dwarf planet that is the host to the moons Hi'laka and Namaka
- 16. The planet in between Earth and Mercury
- 18. A celestial body that is small, orbits the sun, and is NOT spherical
- 19. The terrestrial planet with 2 moons
- 21. The cloud of icy planetismals that is 50,000 AU from the Sun
- 24. The only planet in our solar system suitable for human life at this point in time
- 25. The furthest planet in our solar system from the sun
Down
- 1. A "stellar nursery"
- 3. The dwarf planet that was classified as a planet until 2006
- 5. Small, irregularly shaped objects formed from clumps of dust and other particles
- 7. Our galaxy (no spaces)
- 8. Abbreviation for Trans-Neptunian Objects
- 11. The planet closest to the sun
- 15. What a meteor is called when it collides with the earth's surface
- 17. The third largest moon in the solar system
- 20. Commonly referred to as "dirty snowballs", rocky core with a tail
- 22. The most distant celestial object in our solar system, dwarf planet
- 23. The color of Jupiter's "Great ____ Spot"