... Virgo galaxy cluster 室女星系团 Local Group Galaxy Cluster 本星系群 Coma galaxy cluster 后发座星系团 ...
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While studying the Coma galaxy cluster, he found that the galaxies' gravity alone was much too small to hold the cluster together.
他在研究彗差星系簇的时候，发现星系本身的引力作用太小而不足以维持星系簇的成型。
Possibly because the galaxy, NGC 4911, is being pulled at by its neighbors as it falls into the enormous Coma Cluster of Galaxies.
可能是因为这个星系（NGC 4911）正被拉扯进巨大的后发座星系团之中。
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