Across
- 3. The biggest planet in the solar system
- 7. Positively charged ______ attached to negative electrons to form the first atoms
- 9. First atom formed after the big bang
- 10. Number of planets in the solar system
Down
- 1. Second atom formed after the big bang
- 2. Farthest planet from the sun
- 4. 3rd planet from the sun
- 5. Form that energy was released from attachment of positive protons and negative electrons
- 6. Once it slowed down it turned to matter after
- 8. Planet with the most moons