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Published online 18 July 2007 | Nature | doi:10.1038/news070716-9
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Ice volcanoes in outer space?
'Cryovolcanoes' may spew snow over Pluto's neighbour.
Pluto's neighbouring object, Charon, could be spewing out liquid water from ultra-cold volcanoes, covering Charon's chilly surface with freshly-formed ice crystals.
This dramatic conclusion was made by Jason Cook at Arizona State University, Tempe, who looked at Charon's near-infrared spectrum using telescopes at the Gemini Observatory at Mauna Kea, Hawaii.
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