Earth's Magnetic Field is a protective shield generated by the movement of molten iron in the planet's outer core. This magnetic field extends into space and plays a crucial role in protecting the Earth from harmful solar radiation and charged particles from the Sun. The magnetic field is not static; it changes over time due to various geological processes. It is essential for navigation, as many animals, including birds, use it to migrate. Additionally, human-made technologies, such as compasses, rely on this magnetic field for orientation and direction.