Io

1. In Roman mythology, Juno, or Io, was the wife of Jupiter, and as such she represents the archetype of the Mother Goddess. Her Greek name was Hera. See 'Hera' for more information.

2. In astronomy, Io is the name given to Jupiter's innermost large moon. It looks something "like a pepperoni pizza." It has more than 30 active volcanoes.