Astronomers using the Keck Observatory’s Hawaii-based telescopes and near-infrared cameras capture an image of a devastating volcanic eruption on Io, one of Jupiter’s largest moons (and known since 1979 to be very volcanically active). The eruption, unleashing enough molten material to reshape hundreds of square miles of Io’s surface, also reveals that the material erupted is hotter than any eruption in Earth’s recorded history. This is the most violent eruption seen to date in the solar system, and caps off two weeks of intense activity observed by the astronomers.
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