Across
- 4. "dirty snowballs" orbit the sun
- 6. protective invisible layer that protects us from the sun's rays
- 8. largest planet
- 9. an object that travels around another object
- 12. 365 days 1 full year travel around the sun
- 13. hottest planet
- 14. a ball of gases
- 16. 3rd planet from the sun
- 17. the shape of the orbit that the planet travels around
- 19. small pieces of ice rock and metal that have broken off asteroids
- 21. 24 hours 1 full spin
Down
- 1. our galaxy
- 2. the sun's major gas
- 3. the "red planet"
- 5. 1000s of rings made up of rock and ice
- 6. the path a planet travels along as it goes around the sun
- 7. the planet "great dark spot"
- 10. planet with a very hot side and cold side
- 11. a pattern of a picture that is created by a group of stars
- 15. imaginary line that cuts through the middle of the earth
- 18. chunks of rocks and metal that orbit the sun
- 19. a meteor that strikes the Earth's surface
- 20. bluish tint and the planet looks like it's lying on its side