Juno Unmasks Io’s Fiery Secret After 44 Years

On December 17, 2024, NASA's Juno spacecraft finally solved the 44-year mystery of Io’s unprecedented volcanic activity. Contrary to the long-held belief of a global magma ocean, Juno data reveals Io boasts a mostly solid interior with individual magma chambers fueling its fiery outbursts. This tidal heating marvel, sparked by Jupiter’s gravitational tug-of-war, not only rewrites Io’s geological story but also offers fresh insights into Europa and Enceladus. Looks like Io prefers solo volcanic parties!