Multiscale investigations of the galactic magnetic field

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Electromagnetism is one of the four fundamental forces in Nature. Electric and magnetic fields affect us in more ways than it is possible to list. This is true across all scales, from the very small, such as the electric impulses that control our bodies, to the very large, such as the magnetic field of the Earth that protects us from the ionized Solar wind. In fact, electric and magnetic fields are important throughout the cosmos, helping to form stars and providing support against gravitational collapse in galaxies.