Io

Overview
Io (also known as the pizza moon), is the 4th largest moon in the solar system and the 3rd largest of Jupiter.

Discovery
Io along with Ganymede, Callisto and Europa are called the four galilean moons. They were named after greek mythology and was named and discovered by Galileo Galilei.

What it looks like
Io is a bit yelloish. Why it looks like the pizza moon is that it's crust is like a pizza crust with a lot of cheese and the volcanoes on Io is like pepperoni slices on a pizza. But no tomato sauce. But it would be cool if it did. But the pizza will be burnt because Io is the warmest moons.

Facts

 * Io is the the warmest moon in the solar system. Maybe it is even warmer than Venus.
 * Io is one of the only moons that is geologically active.
 * It is the only moon with active and actual volcanoes on it's surface.
 * Io is the only moon and object with two letters in it's name.
 * It is the 3rd largest of the Galilean moons.