Dozens of giant volcanoes form hotspots on the surface of Io, one of the moons of Jupiter, in this infrared image from the Juno spacecraft. Scientists have identified more than 400 volcanic features on the moon. New studies show that single large chambers of molten rock may feet several volcanoes at once. [NASA/JPL/SwRI/ASI/INAF/JIRAM]
Find out more in our radio program entitled Moon and Jupiter.