Sh2-204, also known as LBN 762, is a bright emission nebula located in the constellation of Cassiopeia. It is part of a larger molecular cloud complex and is approximately 1,500 light-years away from Earth. The nebula is notable for its striking appearance, which is shaped by the interaction of stellar winds and radiation from nearby stars. The region is rich in star formation, with several young stars embedded within the nebula. Sh2-204 is often studied by astronomers to understand the processes of star birth and the dynamics of interstellar matter. Its vibrant colors are a result of ionized gases, primarily hydrogen, emitting light as they are energized by nearby stars.