13 November 2014

A comet's song.

The comet is singing! Well, not really. Rosetta detected variations in the comet's magnetic field, at a very low frequency. The signals had to be raised in frequency to where we humans can hear them, so that many minutes of magnetic field variations around the comet have been compressed to 87 seconds. Listen here.

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The Sentinel (A. C. Clarke, 1983)

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