Quasars are the highly energetic cores of distant galaxies.
类体是
系的极为活跃的核心体。
Quasars are the highly energetic cores of distant galaxies.
类体是
系的极为活跃的核心体。
We still don't know how many galaxies there are in the universe.
我们还不知道宇宙中有多少个系。
Explanation: Across the heart of the Virgo Galaxy Cluster lies a string of galaxies known as Markarian's Chain.
说明: 贯穿室女座系团心脏有一条
系链,
称为马卡林之链。
Steidel)及其同事所发展,它能使观测者建立关于系的大量目录,这些
系的恒
光也许
助
了
系际气体的再游离。
Steidel of Caltech and his colleagues, has enabled observers to build up sizable catalogues of distant galaxies—whose starlight may have helped reionize intergalactic gas.
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