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Rieger cycles

The Sun is now again approaching its 11-year "Schwab Cycle" maximum activity, here image taken by Solar Orbiter in October 2023. Credit: ESA & NASA/Solar Orbiter/EUI Team

A cosmic mystery solved? New evidence shows that the planets influence the Sun's magnetic cycles.

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Researchers identify eddy currents in the Sun, called Rossby waves, as mediating the tidal effects of Venus, Earth and Jupiter on the Sun's magnetic activity
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