with the magnetosphere weakening so much that its polarity reversed. This flips the magnetic north and south poles, and the change can last for tens of thousands of years. Scientists have ...

Every so often, our planet's magnetic poles reverse polarity (see When Compasses Point South). Compass needles have always pointed north; in a reversal, they would point south. You could perhaps ...

If all the compasses in the world started pointing south rather than north, many people might ... of times in our planet's history the polarity of the magnetic shield ensheathing the globe has ...

The shift in polarity indicates the halfway ... But as we shift toward solar maximum, "the sun's magnetic field becomes more complex, without a clear north-south pole separation," French said.