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Across 3. one of the thin or narrow rings that compose the major rings of Saturn. 6. wide gap within the A Ring. 8. a large, bright and complex convective storm in Saturn's southern hemisphere. 9. outermost ring, and is extremely wide 10. a persistent, large-scale cyclone located near one or both of a planet's geographical poles. 11. outermost discrete ring of Saturn and perhaps the most active ring in the Solar system 14. Neptune’s largest moon. 16. the lowest layer of the atmosphere. 17. an event that occurs when one object is hidden by another object that passes between it and the observer. 18. one of five points in the orbital plane of two bodies orbiting about their common center of gravity at which another body of small mass can be in equilibrium.

Down 1. any great height or degree, as the highest point of a graded scale. 2. the innermost ring. Faint. 4. a small moon orbiting near a planetary ring, whose gravitational pull helps confine the ring and the ring's extent. 5. A storm on Neptune. 7. the general flow pattern is west to east, or east to west along latitude lines. 12. thin, faint ring about halfway between the F Ring and the beginning of the E Ring 13. the minimum distance below which a moon orbiting a celestial body would be disrupted by tidal forces or below where a moon would not have formed. 15. The smallest of Uranus’ five major moons. 16. Saturn’s largest moon.