National Geographic Kids - Sun 101

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Across
  1. 4. aurora
  2. 5. magnetic
  3. 7. temperature
  4. 10. billion
  5. 12. percent
  6. 13. carbon
  7. 14. gravity
  8. 16. invisible
Down
  1. 1. object
  2. 2. layer
  3. 3. hydrogen
  4. 6. solar
  5. 8. planets
  6. 9. radiation
  7. 11. nature
  8. 15. wind