Our brain and eyes can play tricks on us—not least when it comes to the expanding hole illusion. A new computational model ...

Five years ago, NASA provided an updated version of the Pale Blue Dot. JPL engineer Kevin M Gill reprocessed the image with modern tools but following the original approach, even receiving inputs from ...

Today’s optical illusion is challenging viewers to find a hidden "5" among a sea of "2s." The tricky pattern plays with human perception, making it hard to spot the odd number. Can you find it?