Rhea
CategoryMoon of Saturn
SystemSolar System
Diameter1527 km
Orbital Period4.52 days
About Rhea
The second largest moon of Saturn, made of about 75 percent water ice and 25 percent rock. Has an extremely thin oxygen and carbon dioxide exosphere. In 2008 Cassini data hinted at a possible tenuous ring, which would make it the first moon known to have one. Discovered by Giovanni Cassini in 1686. Heavily cratered with wispy bright streaks on its trailing side.
More Moon of Saturns
Titan
The only moon with a dense atmosphere, 50 percent thicker than Earths. Surface temperature...
Enceladus
Has geysers erupting water ice from its south pole, suggesting a global ocean beneath the ...
Mimas
Has a massive crater called Herschel that is 130 km across, nearly one-third of the moon d...
Iapetus
The two-toned moon of Saturn, with one hemisphere as dark as coal and the other as bright ...