JWST solves decades-long mystery about why Saturn appears to change its spin

Saturn has long puzzled scientists because measurements suggested its rotation rate was slowly changing — something physically impossible for a planet. Using the James Webb Space Telescope, researchers discovered that Saturn's northern lights drive a self-sustaining cycle: the aurora heats the atmosphere, heating drives winds, winds generate electrical currents, and those currents power the aurora — explaining the mysterious spin readings once and for all.