why are moths attracted to light

Moths are attracted to light primarily because they use natural light sources like the moon and stars for navigation, a mechanism known as transverse orientation. They keep a constant angle to these distant light sources to fly in a straight path. However, artificial lights confuse this system since they are much closer and emit light in all directions. This causes moths to keep turning toward the light, resulting in a spiraling flight path that appears as if they are attracted to it. Additionally, moths are highly sensitive to ultraviolet light emitted by many artificial sources, making them even more drawn to certain lights. Moths also tend to orient themselves by keeping their backs to the brightest part of the night sky, which helps them maintain their sense of "up," but artificial lights disrupt this natural orientation, causing disoriented flight. This behavior can lead moths to stay close to artificial light sources, sometimes dangerously so. In summary, moth attraction to light is a byproduct of their natural navigation system being confused by artificial lights rather than a direct attraction to light itself.