Across
- 3. name given for groups of dust collecting
- 6. disk of dust and gas where planets formed from
- 7. planets that are formed from ice and gas
- 8. number of planets in the solar system
- 11. how stars make energy
- 12. the star in our solar system
Down
- 1. where stars form
- 2. theory on how the universe was created
- 4. cloud of dust and gas
- 5. material used to create planets
- 9. the planets formed closest to the sun
- 10. number of steps the solar system was created in