The Coma cluster of galaxies pictured above is one of the densest clusters known - it contains thousands of galaxies.
这张照片中的后发星系团是已知最密集的星系团之一——包含了数千个星系。
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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