Planet 9 sits at the edge of scientific imagination, promising either an epic expansion of the Solar System or a lesson in ...

Optical illusions thrive online because they play tricks on human perception. The brain often relies on familiar patterns and ...

Buttons, modes, and sliders can feel like real control even when odds don't change. Here's why choice boosts confidence, ...

An incredible optical illusion posted on Reddit has people divided over whether or not it's real. One user branded it "the ultimate optical illusion" due to the amount of debate it had prompted. The ...

Researchers found an optical illusion triggers the pupils to dilate as if light were dimming. It provides clues about how the brain processes images. The image is by Japanese researcher Akiyoshi ...