APOD post:
The Blue Lagoon, or M8, is a star-forming diffuse nebula in the constellation Sagittarius. The nebula is located 6 degrees north of the tip of the teapot; the asterism that is located in Sagittarius. Its apparent diameter is 40x60 arc min, and is 5.2 kly away. The nebula is big enough that you can see it with the naked eye. It was not discovered, however, until 1747 by Le Gentil. In the brightest part of the nebula is a feature commonly called 'The Hourglass Nebula,' due to its shape. This is the region where star formations are currently being made.