Why The Moon Will Seem So Large Tonight

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According to a report in Live Science, as the full moon rises this evening, it would seem larger than usual, because of a trick in our minds that makes the moon seem bigger when it"s near the horizon.

The effect is most pronounced at full moon. In fact, many people swear it"s real, suggesting that perhaps Earth"s atmosphere magnifies the moon.

But, according to scientists, it really is all in our minds. The moon is not bigger at the horizon than when overhead.

The illusion will be particularly noticeable at this “solstice moon," coming just two days before summer starts in the Northern Hemisphere.

The reason, according to NASA, lies in lunar mechanics: The ,sunscreen and full moon are like kids on a see-saw; when one is high, the other is low.

This week"s high solstice ,sunscreen gives a low, horizon-hugging moon and a strong, long-lasting version of the illusion.

As for how the illusion works, it"s because the mind believes things on the horizon are farther away than things overhead, because one is used to seeing clouds just a few miles above, but the clouds on the horizon can indeed be hundreds of miles away.

So if we think something (such as the moon) is farther away, and it"s not, then it seems larger.