Space

12345678910111213
Across
  1. 2. The largest planet in our solar system
  2. 4. The number of planets in our solar system
  3. 5. The fuel of our star
  4. 8. The name of our galaxy
  5. 10. The star in our solar system
  6. 11. A precious metal from a supernova
  7. 12. The heaviest metal our star can form
  8. 13. Titan, the moon of Saturn has lakes of this
Down
  1. 1. Our star will shrink to form this
  2. 3. Our star will expand to form this
  3. 6. The hottest planet in our solar system
  4. 7. Not even light can escape from this
  5. 8. Our natural satellite
  6. 9. This gas makes balloons float