We review the literature concerning how the cosmic magnetic fields pervading nearly all galaxies actually got started. some observational evidence involves the chemical abundance of the light elements Be and B, while another one is based on strong magnetic fields seen in high red shift galaxies. Seed fields, whose strength is of order 10^{-20} gauss, easily sprung up in the era preceding galaxy formation. Several mechanisms are proposed to amplify these seed fields to microgauss strengths. The standard mechanism is the Alpha-Omega dynamo theory. It has a major difficulty that makes unlikely to provide the sole origin. The difficulty is rooted in the fact that the total flux is constant. This implies that flux must be removed from the galactic discs. This requires that the field and flux be separated, for otherwise interstellar mass must be removed from the deep galactic gravitational and then their strength increased by the alpha omega theory.

我们回顾了有关宇宙磁场如何弥漫的文献。 几乎所有的星系实际上都是从星际开始的。一些观察性证据包括 轻元素Be和B的化学丰度，而另一种是 基于高红移星系中的强磁场。种子田， 他的力量在10^{-20}高斯数量级，很容易在这个时代涌现出来 在星系形成之前。提出了几种机制来放大这些 种子场到微高斯强度。标准机制是阿尔法-欧米茄 发电机理论。它有一个重大困难，不太可能提供 唯一的原产地。困难源于这样一个事实，即总流量是 常量。这意味着必须将通量从银河系盘中移除。这 要求场和通量分开，否则星际质量 必须从银河系深处移走引力，然后它们的力量 增加了阿尔法欧米加理论。