special relativity

New measurements from an experiment near the top of an extinct Mexican volcano have placed a stringent new limit on…

Even if you don’t know much physics, you probably know one of its core tenets: an object at rest stays at rest, and…

Astronaut Scott Kelly returned from a year-long sojourn in space in June. His slightly older astronaut twin, Mark…

Go outside and you will be showered, every day, with proof of the theory of special relativity. This proof comes in…

Check your watch. What time is it? But wait, you've actually been moving and accelerating, and according to…

Although the major excitement today is focused on Einstein's General Theory of Relativity, his Special Theory of…

One of the most famous concepts in science was introduced in a paper with the uninspiring title, "On the…

Too often relativity is confined to space ships and interplanetary travel. It's time to dive and see what weird…

In a manner of speaking, Albert Einstein just helped an international team of astronomers find a hot Jupiter that’s…

Foolish humans. Such hubris to think that we could dethrone Einsteinian special relativity, by virtue of a single…

Time dilation. Length contraction. The fact that time moves faster at your face than it does at your feet. These…

This truly awesome video has the answers to that question. It imagines a trip down a desert highway at speeds…