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 ...

How do we know the speed of light – and why does it have a speed limit at all? Leah Crane explores the history of one of the ...

Light is faster than anything else in the known universe, though its speed can change depending on what it's passing through. When you purchase through links on our site, we may earn an affiliate ...

The most distant galaxies in this deep field image from the James Webb Space Telescope appear as small, faint dots—and are receding from us faster than the speed of light due to cosmic expansion. If ...

In the realm of physics, the speed of light is considered one of the most fundamental constants in the universe, dictating the structure of time and space as we know it. But what if this cornerstone ...

Note: Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. (THE CONVERSATION) – Why does time change ...

Here, a calcite crystal is struck with a laser operating at 445 nanometers, fluorescing and displaying properties of birefringence. Unlike the standard picture of light breaking into individual ...

Science fiction authors and readers dream of travelling at the speed of light, but Einstein tells us we can’t. You might think that’s an arbitrary rule, but [FloatHeadPhysics] shows a different way to ...

The ScopeX Lab and the Yao Group are on the cutting edge of photonics-based research and mid-infrared sensing technologies ...

This week, science reporter Isaac Schultz described a groundbreaking effort to measure the spin of a supermassive black hole, and a fascinating experimental archaeology experiment in which marines ...

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 ...

New study found that electrons can reach ultra-relativistic energies for very special conditions in the magnetosphere when space is devoid of plasma. Recent measurements from NASA’s Van Allen Probes ...