This video explores the science behind time travel, from Einstein’s theories to cutting-edge physics, and what it could mean for our future.

All Arco wants to do is see dinosaurs, but children under 12 are not allowed to time-travel. He is jealous of his sister’s ...

Whether space-time exists should neither be controversial nor even conceptually challenging, given the definitions of “space-time,” “events” and “instants.” The id ...

Space-time is the map of where and when events happen. A worldline is the record of every event that occurs throughout one’s life. The key question is whether the map — or all the events it draws ...

Some things we see in space appear to outpace light. Now we are learning to harness these bizarre optical illusions to ...

When scientists set out to study the classic Roman dish cacio e pepe, their goal wasn’t dinner—it was understanding the physics of sauce. They discovered that if pasta water is too hot, cheese clumps ...

At the edge of the heliosphere, the solar wind runs up against the interstellar medium, the gas, dust, and radiation in the ...

While some stories are better when things are moving slow, sci-fi is often at its most fun when things are moving at warp speed. For instance, a fighter craft is probably faster than a capital ship in ...

But Luis Jauregui’s work, which might power quantum computers needed for long-range space exploration, also shows how basic ...

In May 2019, astronomers picked up something strange in the fabric of spacetime. The LIGO and Virgo detectors recorded a ...

Researchers find that a photon can spend a negative amount of time in an excited atomic state while passing through a cloud ...

New observations of two black holes merging have confirmed predictions made decades ago by Albert Einstein, Stephen Hawking, ...