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 ...

In this video I show you what it would look like to slow the speed of light down to around walking speed. So with just walking around town you would experience relativistic effects. I talk about time ...

Researchers at Tsinghua University developed the Optical Feature Extraction Engine (OFE2), an optical engine that processes data at 12.5 GHz using light rather than electricity. Its integrated ...

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Look inside a science fiction computer, and you’ll probably see tubes and cubes that emit light. Of course, it’s for effect, but the truth is, people do think light computing may be the final frontier ...

Want to call someone a quick-thinker? The easiest cliché for doing so is calling her a computer – in fact, “computers” was the literal job title of the “Hidden Figures” mathematicians who drove the ...

An international team of astronomers, led by SRON, discovered a rapid explosion of matter around the supermassive black hole NGC 3783 at speeds of up to 20 % the speed of light. The study was ...

In other words, the matter traveled at 20% the speed of light. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Supermassive black holes are ...

Physicists have checked again whether light of different colors travels at different speeds, and once more it seems not to budge. They timed energetic photons from distant cosmic blasts to see whether ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

While humans and classical computers must perform tensor operations step by step, light can do them all at once. Credit: Photonics group / Aalto University Researchers have demonstrated single-shot ...

The speed of light has been one of science’s most trusted markers of stability. For more than a century, the idea that light moves through space at a constant speed has supported some of physics’ most ...