Horizon

Western Slope Skies
1:06 pm
Mon January 14, 2013

Moon Illusion

On Saturday night, January 26th, a full moon will rise in the east just after sunset.  Look at the full moon when it’s still near the horizon.  Does it appear especially large to you?  Then, look at the moon later this same night, when it’s higher in the sky.  Does it appear smaller?  For most people, the moon looks much larger when on the horizon.  This is the "Moon Illusion."


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