Ithaca Chasma: The Great Rift on Saturn's Tethys

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above image was captured by the Saturn-orbiting robotic Cassini spacecraft as it zoomed by the icy moon last month. Hypotheses for the formation of Ithaca Chasma include cracking of Tethy's outer crust as the moon cooled long ago, and that somehow the rift is related to the huge Great Basin impact crater named Odysseus, visible elsewhere on the unusual moon. Image Credit: Cassini Imaging Team, SSI, JPL, ESA, NASA