Across
- 4. it's invisible
- 7. a celestial object
- 12. it pulls
- 13. everything is made of this
- 15. a space rock burns up in earths atmosphere
Down
- 1. heat and what
- 2. giant balls of gas
- 3. the blue planet
- 5. a space rock floating in space
- 6. hot ball of plasma and gases
- 8. what planet has oxygen
- 9. the coldest planet
- 10. the hottest planet
- 11. the red planet
- 14. the remnants from the start of the solar systems