A mysterious grid of dots spanning several miles of Western China's sand dunes like a giant chessboard may be the result of geological surveys for nickel mines, according to new analysis of satellite ...

Get enough dots together and your faulty eyeballs start seeing things. With random dot patterns, a simple move of the dots by a few degrees can create trippy concentric circles or wild swirls that ...

An optical illusion is a visual phenomenon where our perception of an image differs from objective reality. This image is perceived as a geometric optical illusion. These optical illusions occur due ...