Au of her. She is the second-largest moon of Jupiter, after Ganymede. In the Solar System it is the third-largest moon after Ganymede and Saturn's largest moon Titan, She's a former member of the moon revolution which was a revolution led by titan and his second in commands ganymade and his wife eroupa but she left because she no longer agreed with its politics and goal of destroying the planets. She became softer However still acts the same. It is the outermost of the four large Galilean moons