Why do flies like to fly around lights?

Question

just wondering

Answer 1

Moths and other night-flying insects fly in a straight line by reference to the relative direction of the moon. (or the sun, for day-flying insects).  Because the sun or the moon is so far away, the direction of the light is essentially constant at any one time (and flying insects have evolved to take the moon's or sun's direction of travel across the sky into account).

However, when they see a bright light close by, and confuse it with the moon or the sun,their navigation instinct gets out of whack. In this case, instead of being constant, the angle of the light varies as the insect flies past. So instead of travelling in a straight line, they fly in a curve around the object, when trying to keep the source of light at a constant angle to their flight path. (That is why they spiral inwards towards the source of light).

This is most noticeable with night-flying insects, because during the day,  there is less chance of another bright source of light confusing them.

Answer 2

they are attracted to light

Answer 3

it has ton do with the heat from the light  the wing furthest from the light beats faster trying to warm up  causing them to circle

thats what i heard about moths so i figured flys mite be the same    

i alse know they sleep at night because they cant see  so if you couldent see and you saw a light you mite go there where you could see also

Answer 4

It keeps them warm.