Earth's Magnetic Field

magnetism · planet Earth · space science · invisible forces

Born from molten metal. Deep inside Earth, swirling rivers of liquid iron and nickel create Earth's magnetic field, kind of like a giant electric motor spinning at the planet's core.

Blocks deadly particles. The magnetic field is like an invisible force field that catches dangerous charged particles streaming from the Sun and steers them away from our planet.

Guides your compass. The magnetic field is why compass needles always point toward the north magnetic pole, helping explorers and hikers find their way.

Extends far into space. The magnetic field doesn't stop at Earth's surface, but stretches thousands of miles out into space, creating a protective bubble around our entire planet.