Black Liquid Lake Confirmed on Titan's Surface

Scientists say that a dark, smooth surface feature spotted on the moon last year is definitely a lake filled primarily with liquid ethane, a simple hydrocarbon.
Mixed in solution with the ethane, the lake is also believed to contain nitrogen, methane, and a variety of other simple hydrocarbons.
University of Arizona professor Robert Brown: "It was hard for us to accept the fact that the feature was so black when we first saw it," Brown said. "More than 99.9 percent of the light that reaches the lake never gets out again. For it to be that dark, the surface has to be extremely quiescent, mirror smooth. No naturally produced solid could be that smooth."

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