CICLOPS: Cassini Imaging Central Laboratory for OPerationS

Sector 6

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Titan, Pallene, Dione and Rhea Rev 139 Raw Preview
10-23-2010  14:57:57

Why is Pallene spherical? The October 18 closest approach yet of this 4km diameter moon shows a perfect sphere. Only if it were liquid (or recently liquid) could such a small object be so spherical. Why aren't 2001/2010 Space Odessey fans clamoring fo a mission to such an obviously alien artifact?