M 8 (Lagoon Nebula)

作者：Killeen

发布日期：

The Lagoon Nebula (catalogued as Messier 8, NGC 6523, Sharpless 25, RCW 146, and Gum 72) is a giant interstellar cloud about 4,100 light-years away in the constellation Sagittarius. It is classified as an emission nebula and as an H II region

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