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Earth is the planet on which we live, the 3rd planet from the Sun. Questions using this tag should be about Earth the planet and not Earth-like planets nor earth, as in dirt or soil.

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Jeppe, as the images above show, there can be multiple "north" poles at the same time. However, I disagree with the stability analysis by valerio92. There is nothing about magnetic torques that favors …
answered Aug 12 '17 by A. Newell
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That's a bit like asking how much force the Earth's gravitational force exerts. The gravitational force on an object is its weight, and (all other things being equal) more massive objects weigh more. …
answered Dec 17 '17 by A. Newell
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), we need to say a little more. First, the rotation of the Earth organizes the flow, tending to align it with the rotation axis. Second, the magnetic field from a finite source looks increasingly like … a dipole as we get further away from it; in a multipole expansion, the higher the order of the term, the faster it drops off. The surface of the Earth is at a radius that is roughly twice the radius …
answered Aug 13 '17 by A. Newell