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Science + Tech

May 26, 2020 - National Post

The Earth's magnetic field is weakening and scientists don't know why

The Earth's magnetic field is weakening and scientists don't know why
Aurora borealisFile Photo / © Photabulous!

Some scientists believe the weakening of the Earth's magnetic field could mean it's getting closer to flipping the North and South Poles — an event that happens once every few hundred thousand years

An unknown anomaly is causing the Earth’s magnetic force to weaken between South America and Africa and scientists still aren’t sure why.

Recent data collected by the European Space Agency (ESA) noted that the area of the anomaly, called the South Atlantic Anomaly has weakened by more than eight per cent between 1970 and 2020.

Orbiting satellites and space craft, which rely on the planet’s magnetism to operate, have noted issues like technical malfunctions, the ESA warned. However, a further drop in the force’s strength could impact its ability to protect the planet from solar winds and harmful cosmic radiation.

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National Post

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