M8 (NGC 6523), or Lagoon Nebula, a 5th-mag. emission nebula in Sagittarius.
Image Linkhttps://ocastronomers.org/wp-content/uploads/2019/01/m008.jpg
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Additional Information M8 is a region where gas and dust are collapsing to form new stars. Within M8 is a star cluster, NGC 6530 (overexposed here); its stars cause the surrounding hydrogen gas to glow, revealing the nebula. The "lagoon" is the dark dust lane (upper right) that cuts M8 into two unequal parts.