The light echo around the star V838 Monocerotis as seen by the Hubble Space Telescope in November 2005. When I was a teenager, I was—shockingly, I know—deeply nerdy. At a science-fiction convention, I ...

The glow from faster-than-light particles gives us a unique way to explore the universe. Nothing can travel faster than light — in a vacuum. But when light slows down, sometimes matter can blaze past ...

In the past few years, scientists have found ways to make light go both faster and slower than its usual speed limit, but now researchers at the University of Rochester are publishing a paper on May ...

Nothing can travel faster than light, or 299,792,458 meters per second. But a certain group of particles acts as if it can, a team of physicists recently concluded, potentially paving the way for a ...

Light is fast. In fact, it is the fastest thing that exists, and a law of the universe is that nothing can move faster than light. Light travels at 186,000 miles per second (300,000 kilometers per ...

An illustration conveying the idea of a space-based quantum internet, which would seem, like the hypothetical particle of a tachyon, to outpace light. An illustration ...

The speed of light is one of the most fundamental constants in physics and an enduring source of fascination for scientists and curious minds alike. At approximately 299,792 kilometres per second in a ...