Astronomers have tracked two huge lava waves rolling around a volcanic crater the size of Wales on one of Jupiter’s many moons. Geological forces unleashed the waves on Io, where the most powerful active volcano in the solar system has produced an 8,301 square mile dent in the surface.

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Astronomers have tracked two huge lava waves rolling around a volcanic crater the size of Wales on one of Jupiter’s many moons. Geological forces unleashed the waves on Io, where the most powerful active volcano in the solar system has produced an 8,301 square mile dent in the surface.