Space vocabulary

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Across
  1. 3. gravity
  2. 7. traveller
  3. 8. prediction
  4. 9. jealous
  5. 10. meteorite
  6. 12. earth
  7. 13. scientist
  8. 14. eclipse
  9. 15. zenith
  10. 16. observatory
  11. 18. chest
Down
  1. 1. planet
  2. 2. galaxy
  3. 4. cure
  4. 5. constellation
  5. 6. intend
  6. 10. moon
  7. 11. orbit
  8. 17. without