The moon appears larger at the horizon than when straight above because of

Question

Quizplus · Accepted Answer

The moon appears larger at the horizon than when it is directly overhead due to an optical illusion known as the Moon illusion. This phenomenon does not involve physical changes in the moon's size or light bending due to the atmosphere in a way that would affect its apparent size, nor does it relate to the actual distance between the observer and the moon or physical strain from looking up.

The Moon Appears Larger at the Horizon Than When Straight