Io is a moon of Jupiter and is the closest Galilean moon of Jupiter . Io is also the most active body in the Solar System and one of his volcano's was caught erupting by New Horizons. This volcano was called Tvashtar Paterae.
Io is a moon of Jupiter and is one of the smartest moons but not the smartest . Some of the moons hate him since he's extremely annoying but others do like him as he likes to give motivation to others and proud at everyone doing their best .