Atmospheric optical phenomena such as rainbows, halos, sun dogs, and light pillars are captivating displays we often witness on Earth. These stunning visual effects are created when sunlight interacts with water droplets or ice crystals in the atmosphere, bending and reflecting light in unique ways. A groundbreaking new study suggests that these celestial wonders might not be exclusive to our planet but could also occur on exoplanets—planets orbiting stars beyond our solar system.