Our eyes do not always tell us exactly where things are—and that may be a feature of how biological vision works, rather than simply a flaw. A new study by York University researchers uses a common ...

The Illusion Divide: When exposed to a motion aftereffect, human observers perceive a stationary object as shifted in the opposite direction. Primate inferior temporal (IT) cortex neurons mirrored ...

While new optical illusions go viral all the time, here are some of the most famous illusions that have kept us scratching our heads for years.

In the first century B.C.E., Vitruvius wrote that the Acropolis’ largest temple was horizontally bowed so that it didn't seem to sag, and that explanation persisted for millennia. New research suggest ...

When news breaks, you need to understand what actually matters — and what to do about it. At Vox, our mission to help you make sense of the world has never been more vital. But we can’t do it on our ...

Have you ever looked at the nighttime horizon and gasped at the sight of a spectacularly large moonrise? Typically, if you glance up at the sky hours later, the Moon will seem to have shrunk. Dubbed ...

A few years ago, the internet was going bonkers for optical illusions, from the infamous dress to a cat in the desert. Now there’s a new kind of illusion in town. It will make you see shimmering rays ...

Rub those sleepy eyes and put your spectacles on, folks -- this optical illusion is a real doozy. Redditor NLS83 posted a head-scratching optical illusion Wednesday that could have you staring at your ...