A new look at Stephan's Quintet, a compact group of galaxies discovered about 130 years ago and located 280million light years from Earth. One galaxy is passing through a core of four other galaxies.

　　对130年前发现，距地球2.8亿光年的名为Stephan's Quintet的一组星系重新观察：其中一个星系正通过其他四个星系的核心部分。