Physicists have demonstrated with unprecedented accuracy that the speed of light remains constant. In 1887, a landmark physics experiment was carried out by American researchers Michelson and Morley.

In 1887, one of the most important experiments in the history of physics took place. American scientists Michelson and Morley ...

An expanding universe complicates this picture just a little bit, because the universe absolutely refuses to be ...

The speed of light has been one of science’s most trusted markers of stability. For more than a century, the idea that light ...

The effect, first predicted over 60 years ago and regarding objects traveling near the speed of light, has been lent support ...

They recreate how a camera would see objects traveling at 99.9% of the speed of light, revealing surprising relativistic ...

We break down Einstein's famous twin paradox to illustrate time dilation in special relativity. Discover how acceleration, not just velocity, causes a difference in the aging of the twins and why the ...

If a very large disc on a frictionless, horizontal spindle were gradually rotated faster and faster, what would happen as the ...

Several leading quantum gravity theories predict that there is a dependence of the speed of light on photon energy, which would bridge incompatibilities between general relativity and quantum physics.

At the turn of the century, it sounded as if string theory could give us big answers about the universe. Well… has it?

The pursuit of wellness has often taken a piecemeal approach. Perhaps a more productive and efficient strategy would be to ...