Beginning of the Earth
Why does a compass point north?
The fact that the earth is a gigantic magnet was discovered more than a thousand years ago. But people did not know what they had discovered. They knew that if a needle was stroked by a loadstone (a mineral, which is a natural magnet), the needle would always point north. But they supposed that the needle was attracted by the North Star. We know now that the needle is attracted by the North Magnetic Pole.

We know today that the magnetic pole is as much as a thousand miles from the true, or geographic, pole. But the two poles are always just about the same distance apart.
Why does a compass point north?