Editing Rhea (moon) (section)

== Possible ring system ==
{{main|Rings of Rhea}}
[[File:Rings of Rhea (23988178290).jpg|thumb|Rings of Rhea]]
On March 6, 2008, [[NASA]] announced that Rhea may have a weak ring system. This would mark the first discovery of rings around a moon.  The rings' existence was inferred by observed changes in the flow of electrons trapped by Saturn's magnetic field as ''Cassini'' passed by Rhea.<ref name="rings" /><ref name="Jones2008" /><ref name="LakdawallaE" />  Dust and debris could extend out to Rhea's [[Hill sphere]], but were thought to be denser nearer the moon, with three narrow rings of higher density. The case for a ring was strengthened by the subsequent finding of the presence of a set of small ultraviolet-bright spots distributed along Rhea's equator (interpreted as the impact points of deorbiting ring material).<ref name="Lakdawalla2" />  However, when ''Cassini'' made targeted observations of the putative ring plane from several angles, there was no evidence of ring material found, suggesting that another explanation for the earlier observations is needed.<ref name="Tiscareno2010" /><ref name="norings" />