Planetary Magnetic Fields: Jupiter's Moons

• Suprisingly, perhaps, magnetic fields have been detected around moons in the outer solar system.  The spacecraft, Galileo, made the first such detection around the Jovian moon, Ganymede.  Play the following clip to hear:

• The audio pitch is plotted on the vertical axis, while time is plotted on the horizontal axis.  As the clip plays, the sliding bar illustrates where on the graph the corresponding audio occurs.  Note the correlations.
• The pitch of the audio tone corresponds with the density of charged particles encountered by the Galileo spacecraft
• Entry into the magnetosphere of Ganymede occurs 6-10 seconds into the clip

Does this all sound familiar?