[rE' a] the fourteenth of Saturn's known satellites, and its second
Rhea has a diameter of 951
miles (1,530 kilometers), and orbits Saturn at a
distance of 327,292 miles (527,040 kilometers).
It was discovered by Jean Domenique Cassini in
1672, and named for the sister and wife of Saturn
in Roman mythology.
Rhea is composed primarily of
water ice, with rock making up less than
one-third of its mass.