The speed of light is a fundamental constant, approximately 299,792,458 meters per second. It's the same for all observers and hasn't changed measurably over billions of years. Nothing can travel ...

Let’s explore how constant this speed of light fundamental constant really is. One of the most fundamental physics facts is that the speed of light in a vacuum is constant for all observers. But can ...

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 ...

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 ...

Neutrinos beamed from CERN in Switzerland to the INFN Gran Sasso Laboratory in Italy appear to have travelled faster than the speed of light in a vacuum, known as c, breaking the rules laid down by ...

Simply put, if I were to shine a beam of light between two plates that were close enough to exhibit the attraction of the Casimir effect, would the speed of light as it travels parallel to the plates ...