Multiscale investigations of the galactic magnetic field

电磁力是自然界的四种基本力量之一。电场和磁场对我们的影响比我们可能列举的更多。这在所有尺度上都是正确的，从非常小的，比如控制我们身体的电脉冲，到非常大的，比如保护我们免受电离太阳风影响的地球磁场。事实上，电场和磁场在整个宇宙中都很重要，有助于恒星的形成，并为星系提供抵抗引力坍塌的支持。

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.