galactic cloud

基本解释

Beyond the galactic centre, the cloud is not entirely spherical.
銀河中心之外，反物質雲不是完整的球形。
www.astronomy.com.cn
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大學物理學副教授，他的解釋是銀河系的磁場將燬滅地球。
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.
一些人已經提出，也許一個巨大的黑洞衹是一個前星系雲崩塌的結果，它衹是作爲一個對於推動未來的星系發展的縣城的引擎存在。

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