For nearly 13 years, the #Cassini probe orbited #saturn, its instruments measuring the energy and particle fluxes between the gas giant and its moons—particularly between Saturn and #Enceladus.
Analysis of the collected data revealed the existence of wave activity characteristic of #Alfvén #waves which occur when Saturn's magnetic field passes close to Enceladus. This is a first, demonstrating the long-distance influence of moons on their host planet.
More info : https://www.europlanet.org/tiny-enceladus-exercises-giant-electromagnetic-influence-at-saturn/