Across
- 7. How would you refer to the four largest planets (3, 6)
- 8. An outer part of the solar system filled with icy objects (4, 5)
- 10. The number of days in a normal year
- 11. The moon causes these in the water (5)
- 12. The process in the core of the sun (6)
Down
- 1. The thing between mars and Jupiter (8, 4)
- 2. Ex-planet (5)
- 3. The force holding the solar system together (7)
- 4. When the moon covers up the sun (5, 7)
- 5. Largest planet (7)
- 6. The moon goes through these (6)
- 9. The moon is made of this (6)