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

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

The Sun’s magnetic field is invisible to our eyes, but it quietly shapes everything from the shimmering auroras over the poles to the reliability of GPS on a jet’s navigation screen. When that ...

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 ...