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IB资讯
1 个月
斯蒂芬五重星系上演宇宙级“追尾”,星系碰撞速度惊人!
斯蒂芬五重星系,作为宇宙中的一个复杂天体系统,由五个星系组成,其中前四个星系——NGC7317、NGC7318a、NGC7318b和NGC7319,构成了已知最早的致密星系群。这五个星系中,前四个距离我们约2.9亿光年,而NGC7320则相对较近,约4000万光年。斯蒂芬五重星系也因此 ...
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