How Can Space Travel Faster Than The Speed Of Light?

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Light speed is often spoken of as a cosmic speed limit … but not everything plays by these rules. In fact, space itself can expand faster than a photon could ever hope to travel. » 2/22/15 6:46pm 2/22/15 6:46pm

Tons of Albert Einstein Documents Are Now Online for Free

On Friday Digital Einstein went live, bringing with it a treasure trove of Einstein letters, correspondences, postcards, and notes detailing the life of one of the world's greatest thinkers. As The New York Times reports, these are The Dead Sea Scrolls of physics and you can read them today for free. » 12/07/14 1:00pm 12/07/14 1:00pm

Yes, Time Travel Is Possible; Here's How

Time travel's been one of man's wildest fantasies for centuries. It's long been a popular trend in movies and fiction, inspiring everything from Charles Dickens' A Christmas Carol to H.G. Wells' The Time Machine to the Charlton Heston shrine that is The Planet of the Apes. And with the opening of Interstellar » 11/05/14 1:25pm 11/05/14 1:25pm

A Brief History of Scientists Hunting for Time Travelers

Time travel is possible—or at least a lot of serious physicists say so. It's probably not possible to pull it off in a souped-up Delorean, but there are wormholes, Tipler cylinders, and other Einstein-inspired theories for how it could work. Which raises the question: Why haven't we met any visitors from another time? » 10/09/14 3:03pm 10/09/14 3:03pm

Astronomers Discover First Direct Proof of the Big Bang Expansion

Somebody's going to win a Nobel Prize. At least that's what the physics community is saying after the announcement on Monday that a Harvard team has found the first direct evidence of cosmic inflation right after the Big Bang. It's more proof that the Big Bang really was the beginning of it all. » 3/17/14 12:20pm 3/17/14 12:20pm

Scientists May Have Finally Found a Practical Test for String Theory

String theory a beautiful, elegant piece of science which claims to unify all the forces in the Universe by representing tiny point-like particles as one-dimensional vibrating strings. It's as clever as it is wacky but is—conveniently—untestable. Until, perhaps, now. » 1/07/14 5:40pm 1/07/14 5:40pm

Wait, How Did Someone Recreate Escher in Lego?

Of all the the mind-bending, unfathomable pieces of art to choose to recreate in Lego, surely anything by Escher must be the hardest, with all its impossible stairs, bridges and passageways. Still, that didn't stop Riccardo Zangelmi from trying. » 10/16/13 5:27am 10/16/13 5:27am

How Quantum Theory Screws With Our Perception of Reality

Our modern understanding of reality is based on some fundamental concepts: that the world around us is tangible, that the theory of relativity holds, that cause and effect works as we'd expect, and that humans have free will. But take quantum theory at face value, and it turns out the four can't co-exist together. » 8/08/13 4:43am 8/08/13 4:43am

Scientists Make Light Travel Infinitely Fast

A team of scientists is claiming to have achieved the seemingly impossible: it's managed to create a nanoscale device which allows light to travel infinitely fast. But how the hell did they do it, and what does it mean? » 11/07/12 9:06am 11/07/12 9:06am

Super-Fast Space Travel Would Kill You in Minutes

Everyone thinks it would be cool to travel at the speed of light, which is why scientists devote their lives to working out if it would be possible and NASA is trying to develop its own warp drive. But easy, tiger: turns out super-fast space travel would be fatal. » 11/05/12 9:00am 11/05/12 9:00am

Faster-Than-Light Travel May Be Possible

According to Einstein's special theory of relativity, light traveling in a vacuum is the universal speed limit. But scientists love to try and break rules—and now a tweaked version of Einstein's equations suggests that faster-than-light travel might just be possible. » 10/12/12 8:16am 10/12/12 8:16am

NASA Gravity Experiment Proves Einstein Was Right

Like a beach chair sagging under a sunbather's weight, the fabric of spacetime does indeed warp around the mass of the Earth - just as Albert Einstein predicted. And like a swimmer moving through the water, the rotation of the Earth affects the movement of spacetime itself. A gravity probe whose origins date to the… » 5/05/11 10:40pm 5/05/11 10:40pm

This Animated Video Simplifies Einstein's Complicated Twin Paradox

Einstein's Twin Paradox is super confusing for me, every time I think I fully understand it, I find more questions. The Twin Paradox is a thought experiment in special relativity when one twin travels to outer space while the other twin stays on Earth. When the space bound twin lands back on Earth, he'll find that… » 2/20/11 4:00pm 2/20/11 4:00pm

Relativity Watch Confuses Everybody

"Modeled" on Einstein's theory of relativity, this Relativity Watch actually makes the numbers move instead of the hands. This, of course, makes you dizzy if you continuously stare at it for more than 12 hours. » 3/23/07 9:03pm 3/23/07 9:03pm