Geomagnetic activity, the natural variations in Earth's magnetic field, it fluctuates in 11-year cycles.

地磁活动是地球磁场的自然变化，其波动周期为11年。

Oh yes, and there's geomagnetic reversal.

噢对了。还有地磁反转呢。

In a infinite and empty space the geomagnetic field falls off in strength with the third power of distance.

在无限和真空的空间中，地磁场在强度上随距离3次方而衰减。

One of the biggest geomagnetic storms on record was the Carrington event of 1859.

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But nestled amidst all the usual dangers is the mention of something unexpected solar geomagnetic storms.

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When a massive solar flare erupts on the sun, it can cause geomagnetic storms on the Earth.

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