time machines

A time machine is a hypothetical device that allows travel between different points in time, similar to how a regular vehicle moves through space. While technically fictional, the concept is rooted in physics theories like Einstein's relativity, which suggest that time can be affected by factors like speed and gravity. In some models, a time machine would manipulate these effects or warp spacetime to enable backward or forward travel. Currently, there is no scientific evidence or technology to realize such devices, making time machines a fascinating topic primarily within science fiction and theoretical physics.