Faster than light

Read 12 reviews from the world’s largest community for readers. From a creator, writer, and editor of NASA's Astronomy Picture of the Day ... ************…

Time, as far as we know, moves only in one direction. But in 2018, researchers found events in some gamma-ray burst pulses that seemed to repeat themselves as though they were going backwards in time.

In a vacuum, the speed of light is at a mind-bending 300,000 kilometres per second. That’s as fast as it is physically possible for anything to move.

Traveling faster than light is impossible. But if it weren't, what would it look like?

Our current models of physics aren't consistent with what we observe. So what are we missing? Loop Quantum Cosmology may be the answer - and could suggest that our Universe rose from the ashes of a previous universe.

Propulsion

A new online toolkit will help physicists and engineers imagine how humanity can realize its dreams of faster-than- light travel in space. Remove ads and unlock PREMIUM content This set of tools was created by an international team of scientists from the American company Applied Physics, which also hopes to provide a reality check for warp drive concepts. Our Milky Way galaxy has a diameter of 100 thousand light years and contains from 100 to 400 billion stars, as well as trillions of…

Everyone knows that nothing travels faster than the speed of light, but how does the speed of dark compare? Read on to find out!

Bending space into warp bubbles to travel faster than light may never be a reality, but distorting the flow of time just might be possible.