天文学家或发现首颗银河系外的行星，距离地球大约2800万光年！【太空科学站】
Synopsis
Youtube的朋友们，大家好！ 这里是看宇宙，涨知识的太空科学站跟我一起探索浩瀚宇宙中的种种谜团，进入深邃而广袤的神秘世界 ...
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