Across
- 2. The largest planet in our solar system
- 4. The number of planets in our solar system
- 5. The fuel of our star
- 8. The name of our galaxy
- 10. The star in our solar system
- 11. A precious metal from a supernova
- 12. The heaviest metal our star can form
- 13. Titan, the moon of Saturn has lakes of this
Down
- 1. Our star will shrink to form this
- 3. Our star will expand to form this
- 6. The hottest planet in our solar system
- 7. Not even light can escape from this
- 8. Our natural satellite
- 9. This gas makes balloons float