Solar wind
In the outer parts of Saturn's magnetosphere beyond approximately 15–20 Rs the magnetic field near the equatorial plane is highly stretched and forms a disk-like structure called "magnetodisk". The disk continues up to the magnetopause on the dayside and transitions into the magnetotail on the nightside. Near the dayside it can be absent when the magnetosphere is compressed by the Solar wind, which usually happens when the magnetopause distance is smaller than 23 Rs. On the nightside and flanks of the magnetosphere the magnetodisk is always present. The Saturn's magnetodisk is a much smaller analog of the Jovian magnetodisk.