The Teddy Bear Nebula, also known as SH2-171, is an emission nebula located in the constellation of Cepheus. 

The nebula is shaped like a teddy bear, with two bright stars acting as its eyes, a dark V-shaped region for its mouth, and two round, reddish areas for its ears. It is composed primarily of hydrogen gas, which is ionized by the ultraviolet radiation from the nearby hot young stars. This causes the gas to glow, creating the nebula’s distinctive red color