How Earth Got Its Magnetic Field (And Why It Might Not Protect Us Much Longer)

Earths magnetic is caused by currents of electricity that flow in the molten core.

“These currents are hundreds of miles wide and flow at thousands of miles per hour as the earth rotates. The powerful magnetic field passes out through the core of the earth, passes through the crust and enters space.” – credit NASA

Earth’s magnetic field deflect dangerous ionizing particles thus enabling life to exist, so imagine if we were no longer protected!