Why does the Moon Look Larger at the Horizon?

Why Does the Moon Look Larger at the Horizon? We’ve been talking about this for 2,000 years, and Aristotle mentions it.

Scientists are designing experiments to figure out exactly what’s going on. But there’s no consensus yet.

The Moon looks larger at the horizon due to an optical illusion, not because of magnification or distance. One leading explanation is the Ponzo illusion: objects near the horizon, like clouds and buildings, appear smaller as they recede, but the Moon stays the same size.
Our brains interpret this as the Moon being larger. Other theories exist, but there’s no single agreed-upon explanation yet—scientists are still investigating.

source NASA