<img src=”https://naked-science.ru/wp-content/uploads/2025/02/Callisto-2.jpeg” alt=”Galileo probe confirms presence of ocean inside Callisto”/>Jupiter’s magnetic field has long suggested that something on or inside Callisto conducts electricity very well. There is a suspicion that this is subsurface salt water. But there is also an alternative version – the rich ionosphere of the icy moon. Geophysicists recently reviewed data from the Galileo interplanetary probe and came to the conclusion that the observed effects cannot be attributed to the ionosphere alone.