Rings and Magnetism

Both ice giants have ring systems, though far fainter than Saturn's. Uranus has 13 known rings of dark, narrow ice and dust. Neptune has 5 main rings, with bright arcs of material held in place by the pull of nearby moons.

Their magnetic fields are just as odd. Instead of lining up with the rotation axis like Earth's, each field is sharply tilted and offset from the planet's center. Uranus's field leans about 59 degrees from its rotation axis and Neptune's about 47 degrees — both far steeper than Earth's modest 11 degrees. Scientists think these fields form not in the core but in a shell of electrically conducting water at intermediate depths.