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This is the aurora of Jupiter. What are the visible bright spots caused by?

volcanic peaks

atmospheric storms

Jupiter moons

multiple magnetic poles of Jupiter

Jupiter's moons, especially Io (spot on the left), are powerful sources of auroras on Jupiter. These arise from electric currents along field lines, generated by a dynamo mechanism due to the relative motion between the rotating planet and the moving moon.

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Which of Saturn's moons has such distinctive equatorial ridge?

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23.4 km/h (14.5 mph)

43.9 km/h (27.3 mph)

58.2 km/h (36.1 mph)

67.2 km/h (41.76 mph)