“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 drawn from ...

Add Yahoo as a preferred source to see more of our stories on Google. Navstar-2F GPS satellite. The theory is deceptively simple. First, there is no "absolute" frame of reference: Every time you ...

Add Yahoo as a preferred source to see more of our stories on Google. A telescope image of warped yellow starlight forming a smily face against a black background Scientists could soon test Einstein's ...

Before Einstein, physics looked almost finished. The universe seemed to behave like an excellent Swiss railway timetable. Matter moved. Forces acted. Time ticked away in the background like a reliable ...

Can humans actually travel through time, or is it just science fiction? In this intriguing discussion, Anil Chaturvedi ...

What if the technology you use every day depends on a subtle distortion of time itself? The answer lies in a century-old idea ...

Few concepts in physics are as familiar, yet as enigmatic, as time. In Einstein's theory of relativity, time is not absolute: ...

110 years ago today, Albert Einstein published his General Theory of Relativity, which redefined the relationship between matter and gravity. Suddenly, our mysterious universe made a little more sense ...

Like Max Planck, Albert Einstein first studied mathematics because he was told that everything interesting in physics had already been discovered. But in 1905, Einstein, a young cleark at the Swiss ...

New impressions A visualization of a curved space–time “sea” from the general-relativity simulations carried out by the authors.(Courtesy: James Mertens) From the Genesis story in the Old Testament to ...

Astronomers have long been puzzled by a cosmic mystery: planets orbiting two stars—like Star Wars’ Tatooine—are surprisingly rare, even though they should be common. New research suggests the culprit ...