Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still daring to test it. Some theories of quantum gravity suggest light might ...

Physicist Jessica Muir contributes to the Dark Energy Survey, mapping the sky and advancing understanding of cosmic ...

Astronomy isn't just about gazing at stars, it's about understanding the invisible forces that govern everything from ...

In an effort to bring together the domains of gravity and quantum theory, Albert Einstein and Nathan Rosen proposed a ...

Physicists are quietly testing wild new theories that treat a hidden fifth dimension as more than science fiction, suggesting ...

One of the most stubborn issues in cosmology today concerns the universe's rate of expansion. Scientists know it's expanding, ...

In A Nutshell A black hole in the early universe is eating 13 times faster than a classic physics rule says is possible It’s ...

Since Einstein, physicists have found that certain entities can reach superluminal (that means "faster-than-light") speeds and still follow the cosmic rules laid down by special relativity.

We need to talk about antimatter.

A team of physicists has discovered a surprisingly simple way to build nuclear clocks using tiny amounts of rare thorium. By ...

Scientists aim to build the first graviton detector to explore gravity's quantum nature, despite significant challenges.

The shape of the universe is not something we often think about.