'''Io''', named for the the daughter of Inachus in [[Greek mythology]], is a moon of [[Jupiter]]. It is the most [[volcano | volcanically]] active object in the [[solar system]].
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'''Io''', named for the the daughter of Inachus in [[Greek mythology]], is a moon of [[Jupiter]]. It is the most [[volcano | volcanically]] active object in the [[solar system]]. It has a diameter of about 2,263 miles.
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==References==
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John Gribbin, ''Companion to the Cosmos'' (Little, Brown & Company, 1996)