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Across
  1. 3. known for its rings
  2. 6. windiest planet
  3. 8. Mercury, Venus, Earth, and Mars are the planets closest to the Sun
  4. 9. tipped on its side
  5. 10. composed of liquid heavy metals
Down
  1. 1. the inner and outer planets are separated by an asteroid belt
  2. 2. gas giants
  3. 4. 5th planet away
  4. 5. Jupiter, Saturn, Uranus, and Neptune
  5. 7. altitudes dictated by the atmospheric levels