BOULDER- Black holes, time travel and E= mc^2. They are all related to Albert Einstein's Theory of Relativity. How many of us, though, can actually explain any of it? This year, Einstein's theory ...

In a 1923 book called “The Principle of Relativity,” Albert Einstein seemed to call out to better-equipped scientists of the future to establish the truth of his mind-bending theoretical work. “Apart ...

On May 29, 1919, a total solar eclipse helped to prove Albert Einstein's theory of general relativity. Einstein's theory suggested that gravity could bend light by curving the fabric of spacetime. To ...

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Decades ago physicists realized that gravitational waves are no mere passing phenomenon. Instead those ripples in space should leave behind permanent marks: a fixed distortion in their wake. So far ...

After Albert Einstein published his special theory of relativity in 1905, he spent the next decade trying to come up with a theory of gravity. But for years, he kept running up against a problem. He ...

Einstein's general theory of relativity predicted that so-called 'plunging regions' around black holes would accelerate matter into them at the speed of light. Now, X-ray observations of a remote ...

He shared the Nobel Prize in Physics for his work on gravitational waves, which helped confirm Einstein’s general theory of relativity and how the universe began. By Dylan Loeb McClain Rainer Weiss, ...

The accelerating expansion of the universe could be explained by modifying general relativity so that gravity has mass – or so thinks a small group of physicists. Matthew Francis reports What lies ...

It was the Black Hole tragedy that eventually led to Bengal’s last Nawab, Siraj-ud-Daulah’s execution on the midnight of 2 July 1757. Interestingly, after 201 years, it had lent scientist Albert ...

Ancient astronomers' eclipse observations led to advancements in science. Early eclipse studies helped us understand the Sun's atmosphere and composition. Photography played a crucial role in ...