moon illusion


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moon illusion

[′mün i‚lü·zhən]
(optics)
An optical illusion whereby the moon appears larger when it is close to the horizon than when it is higher up.
References in periodicals archive ?
When the moon illusion amplifies a perigee moon, the swollen orb rising in the east at sunset can seem super indeed.
You will probably notice how big the Moon appears to the naked eye, but if you take a photo it will not be so spectacular as you remembered; this is an optical illusion, known as the Moon Illusion.
On Saturday, this moon illusion will amplify a full moon that's extra-big to begin with.
This combination of the moon illusion and close perigee gives sky-watchers a chance to see the biggest and fullest moonrise possible," Burress said.