Earth's magnetic field changes 10 times faster than once thought.

Our planet's dynamic magnetic field can change direction far more quickly than scientists suspected.

The sloshing of molten iron in the planet's our core; swirling more than 1,700 miles (2800 kilometers) below the surface, powers Earth's invisible magnetic field. Roiling, conductive magma creates electrical charges that determine the positions of the magnetic poles and shapes the invisible magnetic fields lines that cradles the globe and connect the poles.

Interaction between the core and the magnetic field are complex.Their tandem flows create spots that are strongly magnetic in some places and weaker in other; magnetism's intensity can vary over time and in different locations at the core and on the Earth's surface,said lead study author Christopher Davies,an associate professor with the school of Earth and environment at the University of Leeds in the United Kingdom.

In the Molten core,"flows twists and stretches the magnetic field,which in turn pushes back on the flow,resisting the distortions it experience,"Davies told told live Science in an Email.