Cosmic speed limits can be a major inconvenience but they've rarely stopped science fiction in its tracks.

Time travel is possible. For example, an object traveling at high speeds ages more slowly than a stationary object. This means that if you were to travel into outer space and return, moving close ...

One of the most complicated themes in the Sailor Moon narrative is time travel, which appears to have a set of strict, yet ...

Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically with the use of a hypothetical device ...

Starting this Friday, the exhibit "Doctor Who Worlds of Wonder: Where Science Meets Fiction" will take fans behind the scenes ...

The Sunbird nuclear fusion rocket concept has the potential to more than halve the time to travel to Mars and cut travel time ...