Star projectors are devices designed to project images of stars and celestial bodies onto walls and ceilings. They create a soothing atmosphere, often used for relaxation or as a nightlight. Many models feature various light settings and can simulate different night skies, making them popular for both children and adults. These projectors often use LED technology to produce bright, colorful displays. Some advanced versions may include features like sound effects, timers, and remote controls. Star projectors can enhance home decor and provide an educational experience by introducing users to astronomy and the wonders of the universe, including constellations and planets.