An ocean beneath the geyser moon, Enceladus?

525px-False_color_Cassini_image_of_jets_in_the_southern_hemisphere_of_EnceladusAccording to completed research on data collected by Cassini following dives through the Saturn moon's now-famous jets in 2008 and 2009, Enceladus joins Earth, Titan and comets as the only known places where negatively charged ions are known to exist.

The short-lived ions are further evidence that the moon hosts a subsurface and, perhaps, relatively warm ocean. At right is a picture of the moon's active geysers, first observed by Cassini soon after the doughty explorer arrived in 2005.

More about this story may be found here, at Centauri Dreams.


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