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DATABASE > DATABANKS > PLANETS > Class J - Geo Morteus

Orbits in sun's cold zone with a mass of 50 to 4000 Earths. The atmosphere is mostly hydrogen with some helium and methane. A metallic hydrogen core exists at the center. A veil of liquid water may exist at a certain depth within the atmosphere. Planets often have rings at some point and many moons. Jupiter and Saturn fall within this class.