The bar magnet used to simulate Saturn’s magnetic field is located almost precisely at the center of Saturn and is almost perfectly aligned with the planet’s rotation axis (Figure 10.18b). Saturn’s magnetic field is much weaker than Jupiter’s, but overall it is still more than 500 times stronger than Earth’s. Because Saturn’s diameter is much greater than Earth’s, the magnetic-field strength at its cloud tops is about 0.5 gauss—similar to the strength at Earth’s surface. As on Jupiter, a compass would point south on Saturn.