Time on Mars does not match time on Earth, and the difference is no longer a thought experiment. Precision calculations now show that clocks on the red planet tick measurably faster, confirming a ...

In this video I show you my new time machine! I show you how it works by using the theory of special relativity. I show you how you can travel into the future and why it is not a paradox when a ...

Like Max Planck, Albert Einstein first studied mathematics because he was told that everything interesting in physics had already been discovered. But in 1905, Einstein, a young cleark at the Swiss ...

A central idea of physics is that reference frames don't change fundamental laws. It shouldn't matter where you observe an event or how fast you are moving, the laws of physics should remain the same ...

Monisha Ravisetti was a science writer at CNET. She covered climate change, space rockets, mathematical puzzles, dinosaur bones, black holes, supernovas, and sometimes, the drama of philosophical ...

You won't go broke betting on Einstein's ideas to hold up. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Albert Einstein's theory of special ...

Forbes contributors publish independent expert analyses and insights. The Universe is out there, waiting for you to discover it. If you were a physicist in the early 20th century, there would have ...

Is special relativity a clapped-out classical theory, to be replaced by a shiny new quantum model as soon as possible? On the contrary, it would seem: the theory still has a youthful ability to ...

The theory of special relativity explains how space and time are linked for objects that are moving at a consistent speed in a straight line. One of its most famous aspects concerns objects moving at ...