The Fountains of Enceladus
EccentricAnomaly writes "Cassini has observed fountain-like plumes from the warm fractures near Enceladus' south pole. This confirms what had been suspected from an image taken last January. And seems to point to these cryo-volcanoes as being the primary source of Saturn's E-ring. There are also more images available from Cassini's raw images archive."
What was interesting to me was this diagram:
e -details.cfm?imageID=1681/
http://saturn.jpl.nasa.gov/multimedia/images/imag
In JPL's warm-spot modelling for Enceladus there is an undersurface ocean heated by one of the two now-familiar forces of tidal heating or radiological decay heating (though the former seems more likely).
So the statement goes: "where there is liquid water, there could be life". Do we have another Europa on our hands here?