| MadSci Network: Astronomy |
Magnetic fields by themselves would be harmless for humans. We are constantly in the Earth's magnetic field, and as we pass by various electrical devices we can sometimes experience magnetic field strengths which are considerably stronger. Magnetic fields affect charged particles, and since our bodies are electrically neutral (overall), there is no effect. I do not believe there are physiological effects on things like nerve transmission (which makes use of charged ions) until magnetic fields are extremely strong. But as on the Earth, Jupiter's magnetic field can trap charged particles from the solar wind. These charged particles CAN be quite harmful. Astronauts in earth orbit receive quite a dose of radiation if they pass through the van Allen belts, which hold a large number of charged particles. The auroral activity on Jupiter is (in many places) quite intense, and Jupiter has significant areas with lots of trapped electrons, too. This may pose a problem: future astronauts would have to limit the amount of time they spend in the areas of highest radiation.
Try the links in the MadSci Library for more information on Astronomy.