The Rings of Jupiter
Date: 1993 - 1999
What are the rings of Jupiter composed of.
Jupiter's rings are made up of fine dust particles (average size a few
microns (that's tiny!), in contrast to Saturn's rings, which are made
up of mostly pebble-to-boulder size objects). And unlike Saturn's rings
(which are composed primarily of ice), Jupiter's rings are made of rocky
material (in powdered form). It appears that this ring material escapes
after some time and so must be continually replenished, possibly from
meteor bombardment of some of Jupiter's moons or perhaps from material
ejected by volcanoes on Jupiter's moon Io.
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Update: June 2012