This optical illusion is labelled ‘scintillating’ because when you search for the black dots, they seem to appear and disappear at random intersections. When you stare at a single intersection ...

But there’s a catch. Hidden somewhere within the image is a cat—and it’s not easy to find. The challenge is straightforward: ...

An optical illusion shared on Facebook challenged users to count scattered dots. (Facebook/Minion Quotes) (Also read: Optical illusion: Only super-focused eyes can spot the hidden feather in this ...

“They literally almost disappear,” says Sean Walker, an associate editor at Sky & Telescope, to Denise Chow at NBC News. “Normally you see the rings around Saturn, but when you have an edge ...