galactic cloud

基本解释

Beyond the galactic centre, the cloud is not entirely spherical.
银河中心之外，反物质云不是完整的球形。
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Dr. Jo-Anne Brown , an Assistant Professor of Physics at the University of Calgary, explains what would happen if the galactic magnetic cloud were to collapse.
Jo-Anne Brown博士， Calgary大学物理学副教授，他的解释是银河系的磁场将毁灭地球。
Perhaps, some have suggested, a huge black hole simply collapses out of a pre-galactic cloud and serves as a ready-made engine to drive further galaxy development.
一些人已经提出，也许一个巨大的黑洞只是一个前星系云崩塌的结果，它只是作为一个对于推动未来的星系发展的县城的引擎存在。

Just as in a container, molecules in an inter-galactic gas cloud absorb certain wavelengths and leave a pattern of dark lines on a quasar's spectrum.
ECONOMIST: Fundamental physics