Why does Moon appear BIG in the sky ?

This June 30th brings a moon illusion !The sun and full moon lie on opposite sides of the sky. They are like a see-saw: when one is high, the other is low. Because the summer solstice was just last week (June 21st), the sun is near its highest point in northern skies. The full moon is correspondingly low.

Some researchers believe that the Moon Illusion is Ponzo's Illusion, with buildings and trees playing the role of Ponzo's converging lines. Foreground objects trick your brain into thinking the moon is bigger than it really is.

So? Which of the two lines in the picture above is bigger ? It seems as if the farthest one is a little bigger but actually both of them have the same size. The converging lines in the background of the first line from the top create an illusion in our minds which makes it appear bigger.

Try looking @ the moon with naked eye and then with a hole in a cardboard. Its fun !

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