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

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

Our universe plays by certain rules, which originate from different branches of physics. But sometimes the rules seem ...

The rapid acceleration of the universe’s expansion continues to challenge our understanding of fundamental physics. Why the ...

Now, two unrelated-but-similar experiments confirm that, in a double-slit experiment, detection of a photon’s path (its ...

The findings from the University of Sheffield relate to the possible relationship between dark matter, the mysterious, ...

Astronomers have finally watched a black hole do something Albert Einstein only described on paper: twist the very fabric of ...

Scientists are a step closer to solving one of the universe's biggest mysteries as new research finds evidence that two of ...

Facing death is a core part of making meaning of one’s life. To struggle through this universal contemplation without a ...

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

The scientists realized that these supernovae weren’t as nearby as they had thought, so they had zipped away from Earth quicker than expected. “These observations led scientists to ultimately conclude ...

But there are several important anomalies, including a widely debated one called the Hubble tension. It is named after Edwin ...