The magnetic field reverses its polarity every several hundred thousand years, where the magnetic north pole resides at the geographic South Pole. The last reversal took place 770,000 years ago.

One of the most fascinating natural phenomena on Earth is the flipping of its magnetic field, which has occurred hundreds of times in the last 160 million years. When the magnetic field flips, the ...

Here’s how it works. This animation shows movement of the magnetic north pole over the past 50 years. (Image credit: National Centers for Environmental Information) ...

But you may be surprised to know that the North and South Pole are both gradually moving – and they have actually switched places over the years too, due to changes in magnetic fields (though ...