We've flown the Cassini Spacecraft by this moon now several times, flying closer and deeper into these jets, into the denser regions of these jets, so that now we have come away with some very precise compositional measurements.

If you look at these stripes in here, what we call tiger stripes, when we flew over them, all of a sudden we saw an increase in the temperature, which said that those stripes are warmer than the rest of the planet.