Across
- 3. the smallest planet in our solar system
- 5. the farthest planet from the sun
- 7. a body in space that gives off its own light
- 8. once a regular planet but now a dwarf planet
- 9. a planet's natural satellite
- 11. also called a minor planet
- 13. the star at the center of our solar system
- 14. a collection of stars
- 15. planet with the most rings
Down
- 1. the path of a planet's movement around the sun
- 2. holes on the moon
- 4. a special instrument used to observe heavenly bodies
- 6. known as the mother planet
- 10. the shape a planet must be
- 12. a body that orbits another in space