An optical illusion is a visual phenomenon where our perception of an image differs from objective reality. These optical ...

Test your observation skills with this rock-themed optical illusion that hides two big horn sheep in plain sight. This visual ...

This optical illusion challenges you to find the hidden strawberry among watermelons. This is a real-time test of your ...

Optical illusion puzzles have been there for centuries and these are fun challenges that are designed to play tricks on our eyes and brains. Optical illusions work on a simple principle where it ...

As hunters “noodle” over clues for the largest-ever Treasure Hunt prize, the stakes are high and temperatures are low.

Using a worldwide network of radio telescopes including the Green Bank Telescope in West Virginia, astronomers have discovered a mysterious object in the distant universe. A million times the mass of ...

As you might expect from a The Simpsons and Fortnite collaboration, there are plenty of references littered throughout Springfield Island. Some of them, known as Hidden Gags, will reward you with XP ...

Hubble has revealed a strange cosmic object called Cloud-9, a dark matter–dominated cloud with no stars at all. Scientists believe it is a “failed galaxy,” a leftover building block from the early ...