Since the 1830s, the magnetic pole has traveled about 1,500 miles north and eastward in the Northern ... rely on highly accurate magnetic field maps for navigation. Companies update navigation ...

Your navigation system just got a critical update, one that happens periodically because Earth’s magnetic north pole keeps moving. Here’s what to know.

Earth’s magnetic north is not static. Like an anchorless buoy pushed by ocean waves, the magnetic field is constantly on the move as liquid iron sloshes around in the planet’s outer core.

Since the 1830s, the magnetic pole has traveled about 1,500 miles north and eastward in the Northern ... rely on highly accurate magnetic field maps for navigation. Companies update navigation ...