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

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

The idea was first hypothesized about 70 years ago. In a bizarre repercussion of Albert Einstein's Special Theory of ...

Discover how Einstein’s theory of special relativity reshaped physics by linking space, time, mass, and energy in a universe governed by the speed of light. Albert Einstein's 1905 theory of ...

A bold new quantum theory of gravity may finally bridge the long-standing rift between Einstein’s general relativity and quantum field theory. This potential "Theory of Everything" could answer some o ...

A Growing Mystery The discovery of the Universe’s accelerating expansion in 1998 left scientists scratching their heads, ...

A new physics paper takes a step toward creating a long-sought "theory of everything" by uniting gravity with the quantum ...

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

In a bold step toward solving one of science’s most puzzling problems, researchers have proposed a new way to bring gravity ...

They found that the Lorentz contraction—a key part of Einstein’s theory of special relativity—doesn’t actually change how a fast object looks in a photograph. Instead, the object seems ...

This is the central consequence of Albert Einstein's special theory of relativity ... Even the fastest Formula One car will only move a tiny fraction of the distance in the time difference ...

Modern technology is built on such fundamental advances -- for example, the GPS in your smartphone works thanks to Einstein's theory ... quantum field theory and general relativity.