Sh2-171 is a bright emission nebula located in the constellation of Scorpius. It is part of a larger complex of star-forming regions and is known for its striking appearance, which is primarily due to the ionization of gas by nearby hot stars. The nebula is approximately 5,000 light-years away from Earth. This nebula is often studied by astronomers to understand the processes of star formation and the dynamics of interstellar gas. Sh2-171 is also associated with the H II region, where hydrogen gas is ionized, creating a vibrant environment for new stars to form.