Researchers say they may have achieved Einstein's vision of a "unified field theory" that can unite two of nature's ...

In 1915, Einstein published his paper on general relativity, a theory of gravitation. While Newton’s gravity explained everyday phenomena, it did not explain the nature of gravity itself.

Einstein's theory of general relativity suggests that the "memory" of ancient events, such as black hole mergers, may be etched into the fabric of space-time by gravitational waves. New research shows ...

this theory introduced brand-new ideas to science. It opened up an entire field of physics, but left Einstein with some nagging questions. The problems of gravity and acceleration would not go away.

If gravity arises from entropy, scientists could unite Einstein's general relativity with the quantum realm while shedding light on dark matter and dark energy.

During the latter part of the 20th century, string theory was put forward as a unifying theory of physics foundations. String ...

Einstein’s general theory of relativity can be summed ... general relativity is one of two pillars of modern physics – our working theory of gravity and of the very large, of planets, galaxies ...

A new theory links gravity to quantum entropy and introduces the G-field, possibly explaining dark matter and cosmic ...

Special' means ‘in certain circumstances’ – so not including the effect of gravity. It took Einstein 10 years to make the theory work for gravity too, which is how general relativity gets ...

Using the mathematics of Einstein's 1915 theory of gravity, called general relativity, scientists can model the interior of a black hole. The problem is that, when they do this, general relativity ...

You may have seen the recent news of dark energy observations that alter our understanding of the cosmos, but where has the ...

Physicists have taken a bold step beyond Einstein's special theory of relativity, proposing an expansion of special ...