Space Review

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Across
  1. 1. home of the great red spot
  2. 5. highly accepted theory on how the solar system formed
  3. 6. not a planet any longer
  4. 7. this type of pollution makes it hard to see stars
  5. 8. inner planets made mostly of this
  6. 11. the path a planet takes around the Sun
  7. 13. the solar system's star
  8. 15. mariner 10 visited this planet
  9. 16. cluster of asteroids that orbit the sun
Down
  1. 2. planet travels around the Sun
  2. 3. number of planets
  3. 4. second largest gas giant
  4. 9. made of ice and gas and sometimes has a tail
  5. 10. this planet might have frozen ice caps on the poles
  6. 12. planet spins around its axis
  7. 14. outer planets made mostly of this