Io

Moon of Jupiter known for its volcanic activity.

Jupiter Io Jovian moon Io

Io is one of the four largest moons of Jupiter, known as the Galilean satellites. It is the most geologically active body in the Solar System, with numerous volcanoes driven by tidal heating caused by its orbital resonance with other Galilean moons.

/ˈaɪ.oʊ/

Io is named after a priestess of Hera in Greek mythology.

Io is a moon of Jupiter that's super volcanically active, like having volcanoes erupting all over it!

What is Io? It's a moon of Jupiter
Why is it volcanically active? Tidal forces from Jupiter, Europa, and Ganymede squeeze Io
Does it have water? No, Io is primarily composed of silicate rock and iron

moon Galilean satellite

Jupiter Solar System

geological feature natural satellite solar system object