Bad Astronomy

This Illusion Will Drive You Mad

By Phil Plait

Nov 05, 20107:00 AM

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Enjoy. And if you like that, you’ll love these:

• The Blue and the Green
  
• Square Circle Spiral
  
• Hidden Circles Illusion
  
• A Lunar Illusion You’ll Flip Over
  
• Why Does the Moon Look So Huge on the Horizon?
  

Tip o’ the Necker chief to BuzzFeed.

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