Why The Moon Seems Larger Near The Horizon

The moon is always the same size, but because of the moon illusion, this may not seem true. To the naked eye, the moon looks larger next to the horizon. Explanations are still debated, but one reason may be because our eyes are used to seeing things (like clouds) get smaller when they approach the horizon. So when the moon does not get smaller, it registers in our eyes and brain as bigger. We've collected some awesome videos on this topic. Watch them now to learn more.

Key Facts In This Video

  1. The moon illusion is the optical illusion where the moon appears larger when it is nearer the horizon. 00:11

  2. The main theory explaining the moon illusion says that the visual reference points near the horizon make the moon look bigger in comparison. 00:43

  3. By viewing the moon near the horizon upside down, you may be able to beat the moon illusion. 01:32

Written by Curiosity Staff September 15, 2015

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