Gravity plays tricks on our telescopes. Take a Hubble Space Telescope image released by the European Space Agency on August 9, 2021. At the center of the image sits a ring of light punctuated by four ...

The Terrell-Penrose effect, predicted in 1959, suggests that objects moving at speeds close to that of light appear rotated. This optical illusion results from the combination of relativistic length ...

In a famous letter to a bereaved family friend, Einstein wrote: “For those of us who believe in physics, the distinction between past, present and future is only a stubbornly persistent illusion".

An optical illusion is a short, playful puzzle designed to make your mind stretch and smile. It could be a riddle, a tricky question, a visual illusion, or a logic twist that nudges you to think ...