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.

During solar minimum, the sun's magnetic field is close to a dipole, with one north pole and one south pole ... polarity will be from the northern to southern magnetic field in the Northern ...

The location of the magnetic pole is also important in underground ... and flowing differently in the Northern Hemisphere than the Southern Hemisphere “for reasons we’re not sure,” Beggan ...