The Crescent Nebula is a beautiful emission nebula in the constellation Cygnus, about 5000 light-years away. Also known as NGC 6888, Caldwell 27, Sharpless 105.
Nebula
The Lagoon Nebula (catalogued as Messier 8 or M8, and as NGC 6523) is a giant interstellar cloud in the constellation Sagittarius. It is classified as an emission nebula and as a H II region.