Galileo plasma wave observations at Jupiter's moon, Ganymede, June 27th 1996, using electrical dipole antenna. Approx 45 minutes compressed to 60 seconds. Colour indicates wave intensity (red- strong wave, blue- weak wave), Time indicated to the right, frequency vertically. Pitch reduced by a factor of 9 from the measured frequency. Entrance into Ganymede's Magnetosphere marked by a strong burst of noise 6-10 seconds into the recording. This discovery marked Ganymede as not only the largest moon in our solar system, but also the only one known with its own internally-generated magnetic field. Source- http://www.solarviews.com/cap/jup/pws.htm more info- http://science.nasa.gov/headlines/y2000/ast28dec_1.htm
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