A magnetometer is a device that measures magnetism: the direction, strength, or relative change of a magnetic field at a ...

Our protective blanket helps shield us from unruly space weather. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Earth's magnetic field — also ...

Magnetic fields play an important—if sometimes underappreciated—part in planetary systems. Without a strong magnetic field, planets can end up as a barren wasteland like Mars, or they could indirectly ...

The Sun's magnetic field does impact the movement of plasma on the Sun's surface, but it does not actually impact the amount ...

See you on the flip side. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A reversal in Earth's magnetic field thousands of years ago plunged the ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. How the universe got its large magnetic fields has remained one of the stickiest outstanding ...

Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. Using 11 years of magnetic field measurements from the ...

Earth's magnetic field is weakening and its north pole is shifting faster than previously observed, raising concerns about a potential geomagnetic reversal. Geomagnetic reversals, where the magnetic ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. Nov 28, 2025, 07:59am EST Map of the strength of the Earth's ...

Imagine you are a young Bar-tailed Godwit, a large, leggy shorebird with a long, probing bill hatched on the tundra of Alaska. As the days become shorter and the icy winter looms, you feel the urge to ...