According to our current understanding of physics, time travel, if possible, would likely require some form of advanced technology or a theoretical device commonly referred to as a "time machine." This is because time travel, as envisioned in science fiction and explored in theoretical physics, involves manipulating the fabric of space-time to move between different points in time.
A time machine, in theory, would allow a person or an object to traverse through time, either forward or backward, by manipulating the curvature of space-time or utilizing concepts like wormholes or other exotic phenomena.
However, it's important to note that the concept of time travel and the existence of time machines are purely speculative at this point. While there are theoretical frameworks like general relativity that allow for the possibility of time travel, practical realization and the development of such technologies are far beyond our current capabilities.
Furthermore, the feasibility, potential limitations, and paradoxes associated with time travel are subjects of ongoing scientific inquiry and debate. It is uncertain whether time travel is truly achievable or if there are fundamental constraints that prevent its realization.
Until further advancements are made in our understanding of the nature of time, the laws of physics, and the development of future technologies, time travel remains speculative and firmly rooted in the realm of science fiction.