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Science 8 September 1967:
Vol. 157. no. 3793, pp. 1175 - 1176
DOI: 10.1126/science.157.3793.1175
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Articles

Evaporation of Ice in Space: Saturn's Rings

Halstead Harrison 1 and R. I. Schoen 1

1 Boeing Scientific Research Laboratories, Seattle, Washington

The photosputtering erosion velocity of ice in space is estimated to be 400 centimeters per billion years at 1 astronomical unit.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)