Why do UFO's have lights?

UFOs, or unidentified flying objects, often appear to have lights for several reasons, primarily related to visibility and navigation. The lights can make the craft more visible in the night sky, helping to distinguish it from stars and other celestial bodies. Additionally, these lights may serve practical purposes, such as signaling or communication, similar to how aircraft use navigation lights. Ultimately, the exact reason remains speculative, as the true nature of UFOs is still largely unknown.