IO - with over 400 active volcanoes.
Callisto with a semi major axis of 1,882,700 km. See related question.
Ganymede is the largest Galilean moon, the largest Jovian moon, and the largest moon in the solar system.
Jupiter has the Moon called Io - the most volcanically active object in our solar system.
Io, a moon of Jupiter, is known to have active volcanic regions with lava flows and volcanic eruptions. These volcanic activities are driven by the gravitational interactions between Io, Jupiter, and two other Galilean moons.
The innermost Galilean moon is Io. It's a veritable volcano in space, being stressed by Jupiter's tidal forces.Comment : I think the innermost moon (not just of the Galilean moons) is Metis.
No. It is a moon of Mars. The Galilean moons are moons of Jupiter.
Jupiter.
Callisto with a semi major axis of 1,882,700 km. See related question.
Charon is a moon of Pluto. [See related question] To be a Galilean moon you have to be one of the four major moons of Jupiter.
IO is the fifth moon of Jupiter in terms of distance from Jupitert and the primary of the Galilean moons.
Jupiter. It's one of the Galilean satellites, discovered in 1609.
Ganymede is the largest Galilean moon, the largest Jovian moon, and the largest moon in the solar system.
Io, a moon of Jupiter, is known to have active volcanic regions with lava flows and volcanic eruptions. These volcanic activities are driven by the gravitational interactions between Io, Jupiter, and two other Galilean moons.
Jupiter has the Moon called Io - the most volcanically active object in our solar system.
Galilean moon
Galilean moons orbit Jupiter. Jupiter tugs them around the sun once every 12 years.
The innermost Galilean moon is Io. It's a veritable volcano in space, being stressed by Jupiter's tidal forces.Comment : I think the innermost moon (not just of the Galilean moons) is Metis.