Physicists are quietly advancing a radical idea: time might not be a single, thin line but a full three‑dimensional landscape ...

The accelerating expansion of the universe is usually explained by an invisible force known as dark energy. But a new study ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

Astronomers have directly observed a spinning black hole twisting spacetime, confirming a century-old prediction of ...

Quantum theory and Einstein's theory of general relativity are two of the greatest successes in modern physics. Each works ...

Negative energy may not be the showstopper it might be the geometry. That’s the bottom line from the latest warp‑drive study by Harold “Sonny” White, which trades the iconic smooth warp ring of Miguel ...

Planets orbiting dead stars known as white dwarfs might be able to remain habitable thanks to general relativity subtly altering their motion. When stars like our sun run out of fuel, they expand and ...

A gravitational singularity refers to a point in spacetime where density and curvature become infinite, and the equations of general relativity no longer provide meaningful predictions. Theoretically, ...

To understand gravity, Einstein had to rethink space and time as a single connected fabric. He showed that mass bends this fabric, guiding how everything moves. NOVA is available to stream on pbs.org ...