Magnetic Field and Magnetosphere
Due to the metallic liquid hydrogen in the deep interior of Jupiter, huge waves of magnetic fields are generated, forming a great windsock-shaped magnetosphere that extends to 750 million kilometers (466 million miles) out into space. That reaches further than the orbit of Saturn! Thus, there is great interaction between Jupiter and its moons, such as the furious volcanic activity on Io. The magnetosphere also has an area of intense radiation (as discovered by the Galileo probe), highly energetic particles that have been trapped by the magnetic field. This area lies between Jupiter's ring and the outermost atmospheric layers. It is measured to be ten times stronger than Earth's Van Allen radiation belts and would be immediately fatal to unprotected human beings. This belt also was found to contain high-energy helium ions whose origin is unknown.