Across
- 5. the theory that the sun and planets formed from a cloud of gas
- 7. masses of water, methane, and ice
- 8. the inner planets
- 11. this planet has water neither solid or gas but liquid
- 12. small rocky bodies that orbit the sun
- 13. the fourth planet from the sun
- 14. this planet has a very dense atmosphere mostly made of carbon dioxide
Down
- 1. these are formed away from the disk
- 2. a meteoroid that survives the trip to earth
- 3. this planet has a methane atmosphere
- 4. this consists of sun, astroids,comets and a system of planets
- 6. these are the outer planets
- 9. the center of the disk
- 10. this planet is closest to the sun