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

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

Time travel has shifted from pure fantasy to a serious, if highly constrained, topic in modern physics. The equations that describe gravity, quantum fields and the structure of spacetime now allow ...

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 ...

For the first time, physicists have demonstrated a phenomenon known as the Terrell-Penrose effect, which causes an object moving close to the speed of light to warp before our eyes. The new findings, ...

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

Since Einstein, physicists have found that certain entities can reach superluminal (that means "faster-than-light") speeds and still follow the cosmic rules laid down by special relativity.