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

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

A new study enhances hydrogen molecule predictions, achieving unprecedented precision in testing fundamental physics and ...

For more than a century, the double-slit experiment has been the sharpest test of what reality is made of, and of whether ...

Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that ...

Physicists in Vienna staged how a cube and a sphere would look in a camera if they raced at 99.9 percent of light speed. They used lasers and ultrafast cameras to build a single snapshot from many ...

As physicists search for a theory of quantum gravity, new results show that classical gravity can still interact with quantum fields to allow matter to become entangled. When you purchase through ...

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 ...

Searches for anisotropies due to Earth's motion relative to a preferred frame — modern versions of the Michelson-Morley experiment — provide precise verifications of special relativity. We describe ...

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 ...

There was an error while loading. Please reload this page. This project is a dialogue-based educational module in virtual reality that introduces learners to Einstein ...

Elizabeth Finkel does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...