Magnetno polje Zemlje je prirodni štit.Ono nas štiti od kozmičkih mikročestica i jakih zračenja te ih usmjerava mimo naše planete. Magnetno polje uglavnom nastaje u unutrašnjosti Zemlje,ispod jezgrenog plašta,u tekućem stanju,manji dio nastaje u stijenama i zemljinoj kori.Vrlo mali postotak magnetizma ima porijeklo u gornjim slojevima atmosfere kao i u izvorima izvan Zemlje.

Earth's magnetic field is approximately a magnetic dipole, with the magnetic field S pole near the Earth's geographic north pole and the other magnetic field N pole near the Earth's geographic south pole.

Earth is largely protected from the solar wind, a stream of energetic charged particles emanating from the Sun, by its magnetic field, which deflects most of the charged particles. Some of the charged particles from the solar wind are trapped in the Van Allen radiation belt.

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