work for class

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Across
  1. 2. steep cliff on a moon
  2. 4. giant planet like pluto
  3. 5. shower where the rocks fly through sky
  4. 7. streak of light
  5. 12. moon and sun across each other
  6. 13. motion a motion on a big body
  7. 14. a measure of how circular an orbit is.
  8. 16. a barricade between jupiter and mars
  9. 17. metallic hydrogen water on space
Down
  1. 1. affected by gas
  2. 3. unit length from the sun
  3. 6. planet where live is liveable
  4. 7. a fragment fallen from the sky
  5. 8. rock flying through space
  6. 9. belt where the end of the solar system rocks
  7. 10. planet round shape
  8. 11. where you can live
  9. 15. where the rocks fly fast