Salt Volcanoes on Io
An anonymous reader writes "Johns Hopkins astronomers trying to resolve the 30 year mystery of how one of Jupiter's moons generates its swirling clouds of charged particles have found their answer. The stunningly colorful moon, called Io, has a pillar of salt that spews from its volcanic surface."
Dammit Lot, I told you not to look back!
It all becomes clear now :).