The moth mistakes the light source for the moon and tries to maintain the angle between its intended straight course and the light.

Regards,

Joachim

Dear Joachim,

Thanks for the reply, you are right. As per the answer, the moth must be intelligent to calculate the angle and maintained it.

Regards

Vivek

Dear Vivek,

the intended navigation is that the moth flies a straight line, and the angle between any point on this line and the moon can be considered constant since the moon is far away. So the simplest task of the moth's board computer is to maintain a constant angle but there is no need for much intelligence. Euglena could do it.

Reards,

Joachim

https://en.wikiversity.org/wiki/Moth_flame_optimization