Scientists Explain Why This 'Expanding Black Hole' Optical Illusion Is So Trippy - CNET

Biggest Scientific Mystery': Stephen Hawking's Iconic 'Black Hole

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This optical illusion is so powerful that it physically affects 86

How the black hole optical illusion messes with your mind - Big

General relativity - Wikipedia

One of the biggest known black holes discovered due to its light

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How the black hole optical illusion messes with your mind - Big

Scientists create mind-boggling 'black hole' optical illusion