Our universe plays by certain rules, which originate from different branches of physics. But sometimes the rules seem ...

Einstein’s claim that the speed of light is constant has survived more than a century of scrutiny—but scientists are still ...

An illustration conveying the idea of a space-based quantum internet, which would seem, like the hypothetical particle of a tachyon, to outpace light. An illustration ...

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 ...

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 ...

Physicists have taken a bold step beyond Einstein's special theory of relativity, proposing an expansion of special relativity that includes observers moving faster than light. This fresh perspective ...

Addressing a controversy first raised around 1910, two physicists have performed experiments with the aid of an engineer that validate anew the special theory of relativity’s limitations on the speed ...

The answer comes from a counterintuitive result of special relativity, a field of physics which is notoriously difficult to ...