"This work is a step toward understanding how quantum mechanics and gravity work together, a major unsolved problem in ...

For decades, physicists have faced one of science’s greatest puzzles: merging quantum mechanics, which describes tiny ...

At cosmological scales, Albert Einstein’s theory of general relativity has given scientists an immensely accurate blueprint ...

Since the beginning of the 20th century, Einstein's theory of general relativity has been the best description we have of how gravity works. However, right around when Einstein came up with ...

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 ...

General Relativity, Einstein’s seminal theory, elegantly encapsulates gravitation as the curvature of spacetime induced by mass and energy, while Quantum Gravity seeks to unite this classical ...

General relativity is distinguished from other metric theories of gravitation by its use of the Einstein field equations to relate spacetime content and spacetime curvature.

One of the most impressive things about Einstein's 1915 theory of gravity, general relativity, is just how many incredible cosmic objects its central equations have predicted.

And yet his famous equations struggle to fully explain such objects. While general relativity says a strong source of gravity — like the sun — will warp the fabric of space, bend light from a ...