Ever since Einstein revealed his special theory of relativity, we've known that time travel—at least moving forward through time—is possible. Einstein didn't pull this theory, or even the ...

Like stretch marks left on skin that expanded too quickly or cracks embedded in freezing ice, cosmic strings are artifacts of ...

Does the universe have an edge? Is time travel possible? What is a black hole, and in what sense are space, time and gravity a matter of "geometry"? The modern theory of spacetime introduced by ...

One Vanderbilt University researcher thinks time travel might not just be for the movies. (Credit: Wikimedia Commons). Time ...

Using the Large Hadron Collider (LHC), a team of researchers recently tested whether top quarks also follow the special ...

Warp drives like in 'Star Trek' may actually be possible in the future and engines could power transport at the speed of ...

According to Einstein’s theory, simultaneous events in one ... This is because it takes time for the light to travel. So when the train is in motion, the light will have to cover that extra ...

Researchers at the Large Hadron Collider tested whether top quarks, the most massive known elementary particles, comply with ...

The theory is a series of equations defined by Einstein. These equations combine space and time to create space-time. Gravity is explained by these equations, which are consistent with what we see ...

your twin boards a spaceship and launches into space to travel through the universe at nearly the speed of light. Since, according to Einstein's special theory of relativity, time moves slower the ...