Time machine researchers often investigate gravity, which essentially arises when matter bends space and time. Time travel research is based on bending space-time so far that time lines actually ...

Time travel is already possible, and in fact, a time machine has already been built. There are no plutonium-powered DeLorean zooming through time though, and it may take a while before scientists are ...

Time travel is theoretically possible, scientists have said. There is no mathematical reason why a time travel machine could not be able to disrupt the spacetime continuum enough to go backwards ...