Across
- 6. early solar system made up of dust,gas,and ice
- 7. process that helps create planetesimals
- 9. other element created in the big bang
- 12. rotating disk of dust and gas put together by gravity
- 13. one of the two first elements created in the big bang
- 15. Celestial bodies that created other elements beside hydrogen and helium
Down
- 1. Event that created the universe
- 2. coldest planet in the solar system
- 3. law that states galaxies are moving away from each other
- 4. only planet in the solar system with known life
- 5. force that creates solar nebula's
- 8. largest planet in the solar system
- 10. only other body beside earth with active volcanoes
- 11. closest planet to the sun
- 14. Solar nebula starts as dust,___,and ice.