The second largest moon
of Saturn might have its own ring system, which has not been found in any other
known satellite, according to a study by the Max Planck Institute for Solar
System Research in Lindau Katllenburg-(Germany) published in the journal
Science.
The researchers, led by
Geraint Jones, analyzed data from the spacecraft Cassini, "which recently
flew over Rhea, and report on a surprising lack of electrons around the moon. This
phenomenon is interesting because Rhea lies within Saturn's magnetosphere, a
vast magnetic bubble that surrounds the planet and kept inside a trapped ions
and electrons.
