Universe

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Across
  1. 3. heavenily body which is the main reason for tides
  2. 5. only planet which rotate side ways
  3. 7. phases where the moon is expanding in illumination or "growing"
  4. 10. Biggest natural satellite in solar sys
  5. 13. 2nd biggest planet
  6. 14. Another name for astronaut
  7. 15. fastest spinning planet
  8. 16. phases where the moon is less than half illuminated
  9. 18. Dwarf planet
  10. 19. Distance traveled by light in one year
Down
  1. 1. _______ month = 29.5 days
  2. 2. 2nd biggest natural satellite in universe
  3. 4. Huge pits on the surface of the moon
  4. 6. Planet with 14 moons
  5. 7. phases where the moon is decreasing in illumination or "shrinking"
  6. 8. earth's sister planet
  7. 9. Planet closest to sun
  8. 11. The study of heavenly bodies
  9. 12. Planet with two moons
  10. 17. highest tidal range when sun and moon are in line.
  11. 20. phases where the moon is more than half illuminated