Io (Jupiter I)

Io, or Jupiter I, is the closest of the four large moons of Jupiter to the planet.

It has more volcanoes than any other object in the Solar System.

These volcanoes give Io a thin atmosphere. However, the atmosphere would be poisonous to people.

Because of it looks so "blodgy", Io has sometimes been called the "Cosmic Pizza".

Facts and Figures
Orbit	421,600 km from Jupiter
Radius	1,815 km
Mass	8.94 x 1022 kg or 0.015 Earths
Length of Day	1.77 Earth days
Length of Orbit	1.77 Earth days