Einstein’s strangest optical illusion has been captured—thanks to lasers, a cube, and a bit of artistic inspiration.

Fast-moving objects don’t always look the way you’d expect. When something travels near the speed of light, strange things ...

When an object moves extremely fast—close to the speed of light—certain basic assumptions that we take for granted no longer ...

Physicists have demonstrated the Terrell-Penrose effect, which causes an object moving close to the speed of light to warp ...

First formulated by Albert Einstein in 1915, the theory of general relativity remains our best ... of Einstein's equivalence principle (or Lorentz symmetry), which could point to radically ...

More specifically, the team operating the LHC's Compact Muon Solenoid (CMS) detector wanted to know if one of the rules upon which special relativity is built, called "Lorentz symmetry," always ...