Why does Earth have magnetic poles?

Earth is exclusive within the photo voltaic system for quite a few causes: It is the one planet with a breathable oxygen ambiance, it is coated in liquid water and it is the one celestial physique (that we all know of) to harbor life. An often-overlooked attribute that makes our planet particular, nevertheless, is that it is the solely rocky physique within the internal photo voltaic system with robust magnetic poles  — your compass could be ineffective on Mars.

However the place do these poles come from, and what do they do? To reply these questions, let’s begin with a journey to the middle of our planet.

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