> Io is kept very young by its system of active volcanoes. The intense tidal gravity of Jupiter stretches Io and damps wobbles caused by Jupiter's other Galilean moons. The resulting friction greatly heats Io's interior, causing molten rock to explode through the surface. Io's volcanoes are so active that they are effectively turning the whole moon inside out. Some of Io's volcanic lava is so hot it glows in the dark.
Kinda FUCKING ANNOYING how much conviction NASA puts into its 'faulty' Maths and Settled Science all the while plucking its own eyes out to the elegance and easy fit of electrical dynamics across the solar system and larger cosmos. Oh well.