where did the moon come from

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Across
  1. 5. combine to create
  2. 6. a hole in the ground made by an explosion
  3. 7. a coherent large body of matter
  4. 9. likely to be of benefit.
  5. 10. come into forcible contact
  6. 14. come together to form one
  7. 15. scattered pieces
  8. 16. a very large number or amount
Down
  1. 1. liquefied by heat
  2. 2. a physical attack.
  3. 3. a scale representing periods of time.
  4. 4. striking violently against another
  5. 7. shooting star
  6. 8. disappear suddenly
  7. 11. solely
  8. 12. a celestial object
  9. 13. a regular repeating path
  10. 16. attack (a place or person) continuously