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Probing the Cusps of Saturn's Magnetic Field

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This illustration of the Cassini spacecraft at Saturn depicts the planet’s enormous magnetic field and the bow shock created as the solar wind runs into it. The cusps can be seen as the funnel-shaped regions that reach down to the planet’s poles. Credit: ESA

Data from the Cassini spacecraft show that the cusp regions of Saturn’s magnetic field—where it connects to the Sun’s magnetic field—have similarities to Earth’s and also intriguing differences.

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