Across
- 5. orbits a star
- 8. our atar
- 9. our galaxy
- 11. orbits a planet
- 12. star, with planets, moons and asteroids orbiting it
- 14. ball of rock moving through space
- 15. hottest planet
Down
- 1. force that pulls everything together
- 2. collection of stars
- 3. everything exists here
- 4. nuclear reactions in stars
- 6. biggest planet
- 7. burning ball of gas making light and heat
- 10. dust ice and rock moving through space
- 13. planet with most rings
- 16. our planet