Across
- 3. The planet most like Earth
- 6. The second-brightest object in the Kuiper Belt
- 7. The largest planet in the solar system
- 9. a small satellite orbiting a planet
- 11. the envelope of gases surrounding the earth or another planet
- 14. The only planet with rings
- 16. The football-shaped dwarf planet
- 18. The smallest dwarf planet
- 19. The largest dwarf planet
- 21. The farthest planet from the Sun
Down
- 1. a region of space having a gravitational field so intense that no matter or radiation can escape
- 2. a small, rocky body orbiting the Sun
- 4. a celestial body resembling a small planet but lacking certain technical criteria that are required for it to be classed as such
- 5. a small body of matter from outer space that enters the earth's atmosphere
- 8. This planet is twins with Neptune
- 10. The hottest planet
- 12. The only planet sustaining life
- 13. a celestial body moving in an elliptical orbit around a star.
- 15. The name of our galaxy
- 17. The planet closest to the Sun
- 20. all existing matter and space considered as a whole
- 22. The only dwarf that was once considered a real planet