Hi Painius and Scott   Nice  informative posts.   Astronomers have Pluto
being made like a comet(dirty snow ball.) Could it have a faint tail,if
viewed close up. The tail would be always facing away from the sun (I
think?). We found a ring around Jupiter just recently.     I would think
that Saturn"s great ring of rocks and ice came from a very large comet.
Mostly ice because they reflect light so very well.        Bert