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Saturn's interior is thought to be composed of a rocky core, surrounded by a deep layer of metallic hydrogen, an intermediate layer of liquid hydrogen and liquid helium, and an outer layer of gas. Saturn has a pale yellow hue, due to ammonia crystals in its upper atmosphere.
Jupiter and Saturn consist mostly of elements such as hydrogen and helium, with heavier elements making up between 3 and 13 percent of their mass. [3] They are thought to consist of an outer layer of compressed molecular hydrogen surrounding a layer of liquid metallic hydrogen, with probably a molten rocky core
Gas giants are thought to consist of an outer layer of molecular hydrogen, surrounding a layer of liquid metallic hydrogen, with a probable molten core with a rocky composition. Jupiter and Saturn's outermost portion of the hydrogen atmosphere has many layers of visible clouds that are mostly composed of water and ammonia.
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Saturn has an observed magnetic field generated within its metallic core. [3] Metallic hydrogen is present within the core (in lower abundances than Jupiter). [3] Saturn has a rock and or ice core 10–30 times the mass of the Earth, and this core is likely soluble in the gas envelope above, and therefore it is primordial in composition.
A gas giant with a large radius and very low density which is similar to or lower than Saturn's. TrES-4: Super-puff: A type of exoplanet with a mass only a few times larger than Earth's but with a radius larger than that of Neptune, giving it a very low mean density. Kepler-51b, c and d: Silicate planet
Jupiter and Saturn are believed to have cores of rock and metal surrounded by mantles of metallic hydrogen. [112] Uranus and Neptune, which are smaller, have rocky cores surrounded by mantles of water, ammonia, methane, and other ices. [113] The fluid action within these planets' cores creates a geodynamo that generates a magnetic field. [111]
A terrestrial planet, tellurian planet, telluric planet, or rocky planet, is a planet that is composed primarily of silicate, rocks or metals. Within the Solar System , the terrestrial planets accepted by the IAU are the inner planets closest to the Sun : Mercury , Venus , Earth and Mars .