Earth’s Magnetic Field

Earth's magnetic field is a protective shield generated by the movement of molten iron in its outer core. It resembles a giant bar magnet tilted slightly from the planet's rotation axis. This magnetic field extends into space, where it interacts with solar wind—streams of charged particles from the sun. It protects Earth from harmful solar radiation and cosmic rays, helping to maintain a stable environment for life. Additionally, it influences navigation for animals and human-made technologies. The magnetic poles shift over time, and occasional reversals, where north and south switch, have occurred throughout Earth’s history.