Across
- 1. it keeps you grounded
- 3. size of the Sun
- 6. Pluto is this
- 8. made mostly of gas
- 10. life exists here
- 11. our galaxy
- 12. it takes Earth 365 days
- 16. Our Moon's surface
- 17. made of rocks and metals
- 19. the path around the sun
- 20. fourth planet from the sun
Down
- 2. solid rocky surface
- 4. Earth's orbit
- 5. second planet from the sun
- 7. Earth has one, Jupiter has the most
- 9. people who study space
- 12. it takes Earth 24 hours
- 13. Moon's gravitational pull causes these
- 14. first planet from the sun
- 15. made of dirt and ice
- 18. our solar system's star