There is an error in this article. These Cassini results are based on thermal-infrared, not near-infrared data. The measurements were taken by the Composite Infrared Spectrometer and covered the spectral range from 100 to 450 inverse centimeters (100 to 22 micrometers).

John Pearl
Greenbelt, Md
.

The Cassini craft also looks at near-infrared wavelengths, but not in this case. The word near should have been omitted .—R. Cowen Note: The correction noted has already been made to the online text, above .—Ed.
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