Einstein’s Theory of General Relativity is currently our best approximation of how the universe ticks. But there are holes.

Albert Einstein's theory of special relativity revolutionized science and, once proven observationally, brought the physicist international fame. "The standard account of relativity tends to say ...

He shared the Nobel Prize in Physics for his work on gravitational waves, which helped confirm Einstein’s general theory of ...

Time dilation, a captivating concept embedded in Einstein’s theory of relativity, has been experimentally validated on Earth.

No one knows what happens inside a black hole, but Einstein’s theory of general relativity still explains the phenomena occurring just outside.

In 1913, Albert Einstein had stalled in his efforts to construct his general theory of relativity.

A satellite has conducted the "most precise test" on a cornerstone of the physicist's famous theory.

Most people get the logic of Einstein's Theory of Relativity entirely backwards. This is unfortunate, because this reversal is where Einstein’s originality really lies; the place where he ...

First proposed a century ago, Albert Einstein's theory of relativity got yet another boost this week, thanks to giant telescopes that peered at a huge black hole at the heart of our galaxy ...

Quantum physics and relativity theory will never get along. Does that mean one of them is wrong? This question was originally answered on Quora by Viktor T. Toth.

Einstein's theory of general relativity has passed its toughest test after a team of astronomers tested the equivalence principle under extreme conditions.