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

For more than a century, engineers have chased new ways to turn the planet’s natural motions into usable power, from tides to ...

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 ...

More than a decade of satellite monitoring has mapped Earth’s magnetic field as it subtly altered between 2014 and 2025 — and what scientists have learned is remarkable. The South Atlantic Anomaly, a ...