newly discovered volcano
As volcanos go, this one is an odd one indeed. Instead of spewing lava and ash and hot gases, a 30 km wide volcano on Saturn's moon Titan erupts methane. It (and other volcanos like it) may be responsible for the replenishment of methane in Titan's atmosphere. Instead of being powered by molten rock escaping through cracks in the crust (as is the case on Earth), this one may be powered by tidal forces as Titan swings around Saturn in its elliptical orbit. Nifty.
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