For over 100 years, two theories have shaped our understanding of the universe: quantum mechanics and Einstein’s general relativity. One explains the tiny world of particles; the other describes ...

For the first time, a mathematical framework proves that Einstein’s theory of general relativity, which explains the ...

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.

The breakthrough could suggest a way to study 'quantum gravity,' the missing link between quantum physics and Einstein's general relativity in the lab.

Einstein desperately wanted a unified theory of physics. Thanks to gravitational waves—the poster child of general relativity—his wish might just come true. Gravitational waves are ripples in ...

Scientists have unveiled a new theory that attempts to unify the mysterious worlds of quantum physics and general relativity. This new theory could change the way we understand the cosmos, black ...

However, all attempts to blend general relativity and quantum physics necessarily introduce deviations from Einstein’s theory. A photo of the 1919 complete solar eclipse.

Light as we know it may be a direct result of small violations of relativity, according to new research scheduled for publication online Tuesday (March 22) in the journal Physical Review D.

A team of physicists has discovered that it’s possible to build a real, actual, physical warp drive and not break any known rules of physics. One caveat: the vessel doing the warping can’t ...