On Fri, 24 Dec 2004 06:43:34 +0000 (UTC), "informer" wrote:

Why does the sun appear to be bigger at sunrise and sunset than at midday?
Same question also applies to the moon?


It's an optical illusion. If you actually measure the sun/moon width at sunset
or sunrise, and compare it with the measured width at midday, you will find it
is exactly the same.

Distortion of the sun and moon near the horizon is due to varying atmospheric
densities, this does not make the sun or moon look any bigger.

Martin