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.

If all the compasses in the world started pointing south rather than north, many people might ... Such reversals in the Earth's magnetic field, they'd tell you, are, roughly speaking, as common ...

the field itself is also in continual flux, its strength waxing and waning over time. According to NASA, this causes the location of Earth’s magnetic north and south poles to shift gradually and ...

Earth is similar to a magnet bar and the north and south poles represent the two sides. The invisible magnetic field lines encircle the planet between the North and the South. This magnetic field ...