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 ...

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

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 ...

“The chief attraction of the theory lies in its logical completeness,” wrote Albert Einstein after publishing his general theory of relativity in 1915. “If a single one of the conclusions ...

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

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

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

Albert Einstein’s theory of special relativity describes how moving at close to the speed of light would affect travellers’ experience of space and time. These insights don’t merely give us ...

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.

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 ...