Io's Volcanoes: Not Fueled by a Massive Magma Ocean After All
For over 40 years, scientists have been puzzled by Io's extreme volcanic activity. This tiny moon, discovered by Galileo in 1610, is the most volcanically active body in our solar system. But what fuels its 400 active volcanoes? New data from NASA's Juno mission has revealed that Io's volcanoes aren