Geomagnetic Field

The geomagnetic field refers to the natural magnetic phenomenon existing inside the earth. The earth can be regarded as a magnetic dipole, one pole is located near the geographic north pole and the other pole is located near the geographic south pole. The imaginary straight line (magnetic axis) passing through these two magnetic poles is approximately 11.3 degrees tilted with the earth's rotation axis. The earth's magnetic field extends tens of thousands of kilometers into space to form the gravity of the earth's magnetic circle. The Earth’s magnetic circle acts as a barrier to the earth from charged particles carried by the solar wind. The earth's magnetic circle is squeezed by the force of charged particles in the daylight zone (toward the sun), and extends outward in the dark night zone of the earth (the sun away).