posted on Oct, 13 2013 @ 10:52 PM
You all are looking at a very large ball of ice water, covered with craters and cracks.
has a density of only 0.984 g/cm^3 meaning it is mostly water ice with just a bit of
harder material (rocks) thrown in.
It's average surface temperature is just 88 K or -185 C.
At just over 1,060 km in diameter, it's surface is heavily cratered and cut by a number of large scale faults or
. Our own moon has many examples of graben on it.
Considering that the entire surface of Tethys is water ice, this should not be surprising that we are seeing cracks, faults and graben on it's
Other icy moons such as Jupiter's Europa
or another of Saturn's moons,
, have quite a few cracks in them too, looking like roads, tracks, etc:
picture from Enceladus
Larger pic to enjoy:
So while I agree, it would be cool to imagine that we have some Ice Road Truckers on these moon, I'm afraid they are just interesting looking cracks
That's basically what you are looking at with many of the outer moons of Sature: big, giant balls of frozen water.