MadSci Network: Astronomy |
Jupiter, like the Earth, has its own magnetic field. No-one knows exactly how planets keep generating their magnetic fields, but scientists have general ideas. For the Earth, we think its molten iron core sloshes around and continuously creates a magnetic field which comes out of the core and passes out of the Earth near the North Pole and comes back in near the South Pole. The movement of really hot or electrified material is what causes the magnetic field. For Jupiter, we know less, because we don't know exactly what is at the core of the giant planet. It may have a small iron core like Earth's, but it may have something different.
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