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Arches National Park Geology Tour provides an extensive, visually rich description of the geology of Arches, by Deborah Ragland, Ph.D. See our DVD collection.
This is an image of Rhea.
Click on image for full size
NASA/JPL

The Surface of Rhea

The surface of Rhea is typical of an icy moon. Rhea is as heavily cratered (despite the appearance of this picture) as Saturn's "death star" moon Mimas on its leading side.

Its trailing side has unusual white streaks extending for many kilometers over its surface. This means Rhea was probably resurfaced at some point and has undergone active processes such as deposits of snow from fractures in the crust.


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Windows to the Universe, a project of the National Earth Science Teachers Association, is sponsored in part is sponsored in part through grants from federal agencies (NASA and NOAA), and partnerships with affiliated organizations, including the American Geophysical Union, the Howard Hughes Medical Institute, the Earth System Information Partnership, the American Meteorological Society, the National Center for Science Education, and TERC. The American Geophysical Union and the American Geosciences Institute are Windows to the Universe Founding Partners. NESTA welcomes new Institutional Affiliates in support of our ongoing programs, as well as collaborations on new projects. Contact NESTA for more information. NASA ESIP NCSE HHMI AGU AGI AMS NOAA