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Rhea (moon)
Rhea
(; ) is the second-largest
moon of Saturn
and the
ninth-largest moon
in the
Solar System
. It is the second smallest body in the Solar System, after the asteroid and dwarf planet
Ceres
, for which precise measurements have confirmed a shape consistent with
hydrostatic equilibrium
. It was discovered in 1672 by
Giovanni Domenico Cassini
.
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