The Titanic Volcanoes of Jupiter's Io --Surt Volcano Was 78,000 Gigawatts, Earth's 1992 Mt Etna, 12 Gigawatts (Sunday's Feature)

The volcanic activity of Jupiter's moon, Io has been monitored for the last nine years by the Galileo spacecraft and now, with the advent of adaptive optics systems, by Earth-bound astronomers such as those at the Keck 11 Observatory on...