Dramatic theories have been proposed to explain the mysterious interiors of Uranus and Neptune, the ice giants of our solar ...

like with Earth's iron and nickel core. But on Neptune and Uranus, as Voyager 2 discovered, no such dipole exists, leading to speculation that the planets inner layers were unable to move and mix ...

Neptune is an ice giant, composed primarily of hydrogen, helium, and methane, with a hot, dense fluid of icy materials above a small rocky core. Neptune has 14 known moons and at least five main rings ...