Saturn's Anomalous South Polar Vortex

Image credit: W. M. Keck Observatory/NASA/JPL-G. Orton

Original caption:
Image 1: Mosaic false-color image of thermal heat emission from Saturn and its rings taken on February 4, 2004, with the Keck I telescope at 17.65 micron wavelengths. The black square at 4 o'clock represents missing data.

This wavelength is sensitive to temperatures in Saturn's upper troposphere. Warming of ring particles can be seen as they emerge from Saturn's shadow (at the 8 o'clock position).

(Saturn's Strange Hot Spot)
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