# Do other planets with a magnetic field also have two Van Allen belts?

On Jupiter and Saturn, aurora is seen around the planet's poles, so that implies that there must be a kind of magnetic field around those planets. Perhaps even the moon Europa could have a magnetic field created by salty water (Does it?).

On Earth we have two radiation belts, an inner and outer belt. One contains electrons and the other mostly protons. Do other planets also have these two radiation belts?

• A radiation belt is a layer of energetic charged particles that is held in place around a magnetized planet, such as the Earth, by the planet's magnetic field. (wiki) Jul 5 '16 at 16:00
• Jupiter and Saturn absolutely have Van Allen belts. Jupiter's is large and it's a tough place to fly a spacecraft through. That much is easily googled, but I have no idea on the "two belts". Good question. Jul 6 '16 at 6:45
• Just an interesting tid-bit, we actually appear to have three belts. The third belt is much weaker than the inner two and was found recently. A paper on it is found here Jul 6 '16 at 15:36
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