New data from NASA’s Juno spacecraft show temperatures spike more than 20 degrees Celsius just a few meters under Io’s surface, providing the first look at what’s happening below the crust of the Solar System’s most volcanic world. The north polar region of Io was captured by NASA’s Juno spacecraft on December 30, 2023. Image credit: NASA / JPL-Caltech / SwRI / MSSS / Gerald Eichstädt. Jupiter’s moon Io is the most volcanically active...
