Physicists rewrite Einstein’s equations to define spacetime evolution

Physicists rewrite Einstein’s equations to define spacetime evolution

Spacetime is often described as the stage on which the universe unfolds, a four-dimensional blend of space and time that bends, stretches and shifts as matter and energy move through it. However, despite more than a century of work since Einstein introduced general relativity, physicists still struggle to describe how that stage evolves when gravity becomes violent, nonlinear and hard to predict. A new theoretical study points to a different way…