Earth's magnetic field reversal, also known as geomagnetic reversal, is a phenomenon where the positions of the magnetic north and south poles switch places. The Earth's magnetic field is generated by the movement of molten iron and nickel in the outer core. Occasionally, the flow of these metals changes direction, causing the magnetic poles to flip. The last reversal, known as the Brunhes-Matuyama reversal, happened about 780,000 years ago. As the polarity of Earth's magnetic field periodically decreases, it has changed 400 times over the past 330 million years. The decline has been fifteen percent in the last 150 years.

 

The internet cites 780,000 years as an unreliable source of information. A very accurate Phi value is 0.78 x 4 = 3.12. A science magazine in 2024 cited 786,000 years, so I use that in my calculations. Our written knowledge is confusing in a scientific sense, which I write about on my site.

0.786 x 4 = π

During a reversal, the magnetic field weakens and can become disordered, which might expose the Earth to higher levels of cosmic radiation. However, life on Earth has continued through past reversals, and there's no evidence that they cause mass extinctions.

 

At the end of the Mayan calendar, the Earth was aligned with the Sun and the center of the galaxy. This is our position every 25,800 years as calculated by NASA's planetary motions.

 

A massive and growing black hole at the center of the Milky Way is believed to be affecting the Earth's magnetic poles. The combined effect of the above is the possibility of a magnetic field reversal. Albert Einstein is said to have considered this because science has known about Earth's polarity reversals in the past. In our time, the magnetic north pole is moving a kilometer per week from Canada towards Siberia.