Jupiter Auroras Fed By Largest Moon's Magnetic "Bubble"

From The National Geographic:

A mini-magnetosphere around the largest moon in the solar system leaves a mighty footprint on Jupiter's atmosphere—helping to drive the "hyperauroras" that dance across the planet's poles.

That's one finding in new research that offers unprecedented details on interactions between Jupiter and two of its moons, the giant Ganymede and the volcanically active Io.

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