Planetary Dynamos

Nearly all the planets in our solar system possess a magnetic field or had one at some time in the past. The diversity of the planetary fields reflects interesting differences in interior dynamics. Their exploration by space missions or computer simulations is an important tool to provide insight into the otherwise shielded planetary interiors. This short introduction gives an overview of activities at the Max Planck Institute for Solar System Research concentrating mainly on computer models, where considerable progress was achieved during the past years.