Saturn Electrostatic Discharges

Saturn Electrostatic Discharges (also referred to as SEDs) are atmospheric lightning events in convective weather storms on Saturn that produce high frequency (HF) radio emissions (1–40 MHz). Terrestrial lighting events on Earth, in comparison, occur in the very low frequency (VLF) radio band, between 3 Hz and 30 kHz.

Source: Wikipedia — Saturn Electrostatic Discharges (CC BY-SA 4.0)