Across
- 2. Made of rock and metal and bigger than meteors
- 7. Largest Planet
- 9. Belief that the Sun is the center of the Solar System
- 10. Millions and billions of stars held together by gravitational attraction
- 11. A scientist who studies the universe
- 13. Dwarf Planet
- 14. Attractive force between two objects
- 16. Planet with beautiful rings
- 18. Path of an object as it revolves around another
- 19. Our Home Planet
- 20. First Planet from the Sun
Down
- 1. Object that revolves around another in space
- 3. A ball of ice and dust
- 4. Hottest Planet
- 5. Belief that the Earth is the center of the Solar System
- 6. The Red Planet
- 8. Planet that rotates on its side
- 12. Planet Farthest from the Sun
- 15. Study of the moon, stars, and other objects in space
- 17. Chunks of rock or dust in space