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The Sound of Saturn
Saturn is a source of intense radio emissions, which have been monitored by the Cassini spacecraft. The radio waves are closely related to the auroras near the poles of the planet. These auroras and the radio spectrum they produce are similar to Earth’s northern and southern lights. The complex radio spectrum with rising and falling tones indicate that there are numerous small radio sources moving along magnetic field lines threading the auroral region.
Time on this recording has been compressed, so that 73 seconds corresponds to 27 minutes. Since the frequencies of these emissions are well above the audio frequency range, we have shifted them downward by a factor of 44.
[Text and Photo: NASA/JPL/University of Iowa. Edited from the original source.]
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