Is Ganymede Volcanically Active?

The names Marius proposed for the moons in 1614 (suggested to him by a fellow astronomer, Johannes Kepler) are the ones we use today — Io, Europa, Ganymede, and Callisto. Io is the most volcanically active body in the solar system. Its surface is covered by sulfur and lava in many colorful forms.

Which of Jupiter's moons is volcanically active?

Jupiter's rocky moon Io is the most volcanically active world in the solar system, with hundreds of volcanoes, some erupting lava fountains dozens of miles (or kilometers) high.

What is the most volcanically active moon?

A volcanic plume erupts from the surface of Io, Jupiter's third largest moon and the most geologically active body in the solar system, in a picture taken by the Galileo spacecraft.