Enceladus: Cosmic Graffiti Artist Caught in the Act

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Science  09 Feb 2007:
Vol. 315, Issue 5813, pp. 815
DOI: 10.1126/science.1134681

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As one of the most geologically active bodies in the solar system, Saturn's moon Enceladus not only coats itself with water ice particles, it accounts for the unusually high albedos of the other satellites orbiting within Saturn's vast, tenuous E ring. This effect is evident in Hubble Space Telescope observations obtained at true opposition on 13 and 14 January 2005 that reveal that the mean geometric albedos of satellites embedded within the E ring approximate or exceed unity.

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