Across
- 3. Plantesimals are masses that became...
- 4. Greatest mass is in the...
- 8. First element created
- 9. The outer planets in our Solar System are made mostly our of...
Down
- 1. Largest planet in our Solar System
- 2. Forms stars
- 5. Einsteins equation on energy and matter
- 6. Subatomic particles gained this to form first atoms
- 7. Created our universe 13.8 billion years ago
- 8. Most abundant elements in the universe