Thursday, October 7, 2010

Chemistry On Europa

A new study suggests that Jupiter's moon Europa may support chemical reactions both on its icy surface and below the surface, beyond the reach of sunlight. Scientists have found that water and sulfur dioxide react easily and quickly even in the extreme cold that reigns on Europa. The sulfur involved, in one of Nature's amazing twists, seems to come from the volcanic eruptions on another of Jupiter's moons, the volatile Io.

Scientists believe a huge ocean exists under the Europan ice shell. With complex molecules possibly migrating down into that ocean, and a heat and energy source that keeps the water in the ocean liquid, the case for at least the precursors of life existing on Europa seems to be strengthened by this study. Further, the results of the study do not apply solely to Europa. For example, they could also apply to the other two large moons of Jupiter, Callisto and Ganymede.

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