Those closeup images of Callisto.
You can see the images on
www.space.com, or, better,
at the galileo website:
http://www.galileo.jpl.nasa.gov?
But I'm curious about the description of those icy, 100 meter (330 foot) high
knobby "spires" on that moon.
Would they be comparable to that
famous natural "spire" found on
the plains of Nebraska, the "Chimney Rock"?
Of course, instead of silicate rock,
you would have rockhard dirty ice
instead.
cheers.
Jacob