The Sharpless Catalog is a collection of astronomical objects, specifically emission nebulae, compiled by astronomer David Sharpless in 1959. It includes 313 objects located primarily in the northern sky and is widely used by astronomers for research and observation. Each entry in the catalog is designated with the prefix "Sh" followed by a number. The catalog serves as a valuable resource for studying the formation and evolution of stars and galaxies. Many of the objects listed are regions where new stars are being born, making the Sharpless Catalog an important tool for understanding the dynamics of the universe.