全宇宙有500万亿个星系，我们只看到2万亿个，剩下的在哪？ #探索宇宙 #宇宙未解之谜 #涨知识 #可观测宇宙 #星际
Synopsis
全宇宙有500万亿个星系，我们只看到2万亿个，剩下的在哪？ #探索宇宙#宇宙未解之谜#涨知识#可观测宇宙#星际.
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