Callisto

Introduction
What makes a moon? Earth has 1, Jupiter has 79 and Saturn has 82 moons. Saturn has now taken the number spot of most confirmed moons as of February 2020. Callisto is a moon of Super World/Jupiter. Callisto is also known as Jupiter IV the fourth moon of Jupiter.
Biography
Callisto is the second largest moon orbiting Jupiter. Callisto was discovered in January of 1610. The average surface temperature of Callisto is minus 139.2 degrees Celsius or minus 218.47 degrees Fahrenheit. Callisto has a surface area of 7.30X10^7  kilometers squared or 0.143 Earths. Callisto has a volume of 5.9X10^10 kilometers cubed or 0.0541 Earths. It takes Callisto approximately 16.7 Earth days to Orbit around Jupiter. It travels around Jupiter at 8.204 kilometers squared. Callisto has an atmosphere made of thin layer of Carbon Dioxide and molecular Oxygen. Callisto has the most craters in The Solar System and in fact whenever a new crater is formed, it replaces an old one. 
Story
In The Traditional Classical World Religion, Callisto was one of the many lovers of The King of The gods, Zeus(Jupiter in Traditional Roman Religion). Makes sense why Callisto the moon orbits Jupiter the planet. Callisto having been pillaged my Zeus, beared a son and Hera(Juno) hearing us this became jealous and turned Callisto into an Ursa(Bear). Her son Arcas was a hunter. And when Arcas came across the bear, Callisto went to slay this beast. Zeus however prevented this tragedy and placed both Callisto and Arcas in the night sky, transforming them into Ursa Major and Ursa Minor.