Roughly 42,000 years ago, Earth’s magnetic field weakened dramatically during the Laschamps geomagnetic excursion, allowing more cosmic radiation to reach the atmosphere. In a peer‑reviewed study of ...

Learn how some of Earth’s magnetic field flips last longer than others, weakening our defenses against cosmic radiation.

Earth's magnetic field is generated by the churn of its liquid nickel-iron outer core, but it is not a constant feature. Every so often, the magnetic north and south poles swap places in what are ...

Deep beneath the ocean floor, ancient sediments hint that Earth’s magnetic field sometimes changed far more slowly than expected.

Earth’s magnetic field has flipped about 170 times in the last 100 m years, and the next reversal is not a matter of if but when. Far from a cinematic instant catastrophe, a flip would unfold over ...

Geomagnetic storms are capable of sparking beautiful displays of the Northern Lights across our night sky. However, there is a potential danger behind that beauty, especially now, with solar activity ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Researchers found a strong ...

Satellites, including those used for GPS and communications, will face greater risks in coming decades during solar-triggered geomagnetic storms because of the effect climate pollution has on Earth’s ...

Amoré Elsje Nel works for the South African National Space Agency. She receives a Thuthuka Grant (TTK210406592410) from the National Research Foundation. A geomagnetic storm is a disturbance in ...

The northern lights may be visible as far south as New York and Idaho in the coming days thanks to a geomagnetic storm roiling over Earth. These aurorae will result from the arrival of a coronal mass ...