| Saturn's rings, unlike the rings of the other planets, are
                                             very bright albedo 0.2 - 0.6. Though they look continuous from the Earth, the rings are actually composed of innumerable small
                                             particles each in an independent orbit. They range in size from a centimeter or so to several meters. A few kilometer-sized
                                             objects are also likely. Saturn's rings are extraordinarily thin: though they're 250,000 km or more in diameter they're less
                                             than one kilometer thick. Despite their impressive appearance, there's really very little material in the rings -- if the
                                             rings were compressed into a single body it would be no more than 100 km across. 
                                             
 
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