Mercury is the closest planet to the Sun, and it has a very small and weak magnetic field (~1% of Earth's strength) produced by dynamo in the core. In combination with a thin atmosphere, this results in the solar wind sometimes impacting the surface of Mercury. However, the magnetic field is generally strong enough to keep the solar wind at bay.

In contrast, Mars has no inner dynamo creating a global magnetic field, and hence has no global magnetic field. However, remnants of iron in the surface of Mars have retained some magnetic properties. Some areas of the surface have local magnetic fields which push outwards into the solar wind's magnetic field. These areas are in the south of the planet and often protect ionospheric ions in this region.

Venus is a unique character in the solar system. The planet has no magnetic field, but volcanic activity on the surface means that it has an extended and dense atmosphere, and being closer to the Sun than Earth, this atmosphere is easily ionized. As such, Venus has a thick and dense ionosphere. The interplanetary magnetic field directly interacts with the ionosphere, however, when it comes into contact with the plasma, it becomes frozen into the ionosphere and becomes trapped. The IMF builds up in the ionosphere, causing an induced magnetosphere due to the thick ionosphere. The caught field lines slowly diffuse through the ionosphere around the side of the planet and finally out into a tail-like structure.

Saturn and Jupiter are called the Gas Giants. They are both primarily made up of hydrogen and helium, and are much larger than Earth. Both rotate very quickly, at ~9 hours and ~10 hours respectively. Both planets also have a large number of moons, which in themselves create unique interactions with the magnetic field of both planets.

Io, a moon of Jupiter, and Enceladus, a moon of Saturn, are both geologically active. Io spills sulfur and Enceladus spills water molecules, which become ionized by solar radiation, and form a torus of plasma around the planet. This in turn gets 'picked up' by the large magnetic field. Due to the fast rotation and heavy torus of particles, the centrifugal force pushes the magnetic field into a disc shape. At both planets, we call this the magnetodisc.

In addition, the extra particles from the moons weigh down and make the magnetic field bend backwards from rotation. Due to these processes, the Dungey cycle is very small, slow or even none existant at times at these planets. Instead, they have the Vasyliunas cycle. The Vasyliunas cycle is another model of plasma circulation, however this model is based on the fact that the magnetospheres of Jupiter and Saturn are more rotationally-driven than solar wind-driven like the Dungey cycle.