The Einstein equations remain the cornerstone of general relativity, underpinning our understanding of how matter and energy influence spacetime curvature. Recent investigations have not only ...

Why is the expansion of our Universe accelerating? Twenty-five years after its discovery, this phenomenon remains one of the greatest scientific mysteries. Solving it involves testing the fundamental ...

Kurt Gödel discovered a solution to General Relativity that allows time travel without any exotic physics, revealing that the ...

A new solution to Albert Einstein's theory of general relativity suggests hypothetical gravitational stars that look like black holes could be nested within one another. When you purchase through ...

The evidence for the Big Bang is overwhelming, but we cannot describe what goes on in that event. We can’t accurately call it a moment; time as we know it did not exist. Our science stops making sense ...

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 ...

For 90 years, physicists have tried to solve the equations that constitute Albert Einstein’s theory of general relativity — the concept that matter, space and time are intertwined. But some of ...

A rare manuscript featuring early calculations that led to Albert Einstein's general theory of relativity sold for just over $13 million at an auction in Paris Tuesday, becoming the most expensive ...