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This image shows a rare and powerful storm on the night side of Saturn. Light from Saturn's rings (called "ringshine") provided the illumination, allowing the storm and other cloud features to be seen. The storm is a possible source of radio emissions believed to come from electrical discharges (lightning) deep in Saturn's atmosphere. Cassini began detecting the radio emissions, which are like those from lightning, on January 23. At about the same time, amateur astronomers reported that a storm had appeared in Saturn's southern hemisphere at minus 35 degrees latitude. Cassini was in the wrong place to take good images of the storm on the day side, since the planet showed only a thin crescent to the spacecraft, but night side imaging was possible using light from the rings. The image shows the storm as it appeared to the Cassini imaging system on January 27, 2006. The storm's north-south dimension is about 3,500 kilometers (2,175 miles); it is located at minus 36 degrees (planetocentric) latitude and 168 degrees west longitude. This places it on the side of the planet that faces the spacecraft when the radio emissions are detected; the radio emissions shut down for half a Saturnian day when the storm is on the other side. (See
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