Across
- 3. when the moon passes between the earth and sun
- 5. the galaxy that includes the solar system
- 7. when most of the moon's dayside has come into view
- 10. brightest star seen from earth
- 14. when the moon moves into the earth's shadow
- 15. mainly made of gases
- 18. when the illuminated part of the moon phases away from earth
- 19. furthest known planet in the solar system
- 20. has a dusty cold desert ground
- 21. made up of the layers of gases surrounding a planet
Down
- 1. smallest planet
- 2. a region where the gravity is so strong that nothing can escape it
- 4. large celestial body of gas that is visible in the night sky
- 6. when the moon is a quarter way through its monthly journey
- 8. hottest planet
- 9. largest planet
- 11. the earth's only natural satallite
- 12. when one whole side of the moon can be seen
- 13. coldest planet
- 16. water covers 70% of it's surface
- 17. the invisible phase of the moon