Across
- 3. object which orbits a star
- 5. system formed around 4.6 billion years ago
- 7. the red planet
- 12. the path which the planets move around the sun
- 14. space traveller
- 15. fourth largest planet and has eight moons
- 16. instrument used for seeing planets and stars clearly
- 18. layer of gases surrounding planet, star or moon
- 20. planet with the brightest rings
Down
- 1. plant which people live on
- 2. a group of stars
- 4. ball of rock and ice
- 6. vehicle astronauts travel in
- 8. really hot
- 9. there are eight of me
- 10. furthest from the sun
- 11. third largest planet and seventh from the sun
- 13. eclipse caused when earth passes between the sun and the moon
- 17. hottest planet in the solar system
- 19. closest to the sun