The Lagoon Nebula is a large interstellar cloud located in the constellation Sagittarius. It is approximately 4,000 light-years away from Earth and spans about 55 light-years across. This nebula is known for its bright colors and is a region of active star formation, where new stars are born from the surrounding gas and dust. The Lagoon Nebula is classified as an H II region, which means it contains ionized hydrogen gas. It is also part of a larger complex of nebulae and star clusters, including the nearby Trifid Nebula. The nebula can be observed with binoculars or small telescopes, making it a popular target for amateur astronomers.