Io: Most Volcanically Active Object in the Solar System (Fact of the Day)

Io (One of the moons of Jupiter)
Io, one of the moons of Jupiter, is the most volcanically active object in our Solar system. It is also the fourth largest moon in our Solar system. Io was discovered by Galileo in 1960. It is one of the four Galilean moons and the other three being Europa, Ganymede and Callisto. It has more than 400 active volcanoes. And the main cause of the volcanic activity, is the tidal heating created by the pull of Jupiter and the other three Galilean moons.



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