Spacetime isn’t something that exists; it’s a model for describing how events happen. Treating events as objects creates philosophical confusion and fuels misconceptions, such as time-travel paradoxes ...

A century after Albert Einstein sketched out his radical picture of gravity, astronomers have now watched a black hole ...

This week on Spacetime, we take a detour into how geometry works in spacetime. Last time we talked about what curvature means, looked at geodesics, great circles on spheres, and tried to understand ...

A spinning black hole in the constellation Scorpius has created a stable dent in the fabric of spacetime, scientists say. The dent is the sort of thing predicted by Albert Einstein's theory of general ...

Astronomers have finally watched a black hole twist spacetime in real time, catching the fabric of the universe itself wobbling under the grip of extreme gravity. Instead of a static snapshot, they ...