Saturn's largest ring

  title={Saturn's largest ring},
  author={Anne J. Verbiscer and Michael F. Skrutskie and Douglas P. Hamilton},
Most planetary rings in the Solar System lie within a few radii of their host body, because at these distances gravitational accelerations inhibit satellite formation. The best known exceptions are Jupiter’s gossamer rings and Saturn’s E ring, broad sheets of dust that extend outward until they fade from view at five to ten planetary radii. Source satellites continuously supply the dust, which is subsequently lost in collisions or by radial transport. Here we report that Saturn has an enormous… 

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The dark side of Iapetus