Time travel was always an ambitious dream in science fiction. A writer like H. G Wells not only fascinated the reader with a wonderful novel like "Time Machine" but also introduced the concept of time travel in the imagination of the reader. Today's time travel is not a strict SF novel. Einstein 's special theory of relativity enables unique time expansion, often referred to as time travel. According to theory, it seems that time is slower for fast-moving objects than stationary observers.
The basis of all discussions on contemporary travel is Einstein's general relativity. Einstein's equations make space and time dynamic by describing how they are bent and distorted by the material and energy of the universe. In general relativity, the person's personal time measured with a wrist watch will always increase, as in Newton's theory or the normal time of special relativity. But now there is a possibility that the spacetime will be badly distorted and will come back on the spaceship before departing.
The fundamental cause of speculation of time travel is that our best physics theory does not seem to prohibit traveling over time. According to Einstein's general relativity theory, this feat should be possible and general relativity theory expresses gravity as distortion over time and space of energy and matter. A very powerful gravitational field like a gravitational field created by a rotating black hole can in principle deform the existing structure deeply and bend the space and time back to itself. This creates a "closed time curve" (CTC). This is a loop that you can follow in the opposite direction.
Throughout history, physicists have discussed the rationality of time travel. The theory of relativity allows time for a journey to the future, fast return to the Earth is only slightly older than its colleagues. Einstein's theory is a spatiotemporal theory and there is no doubt that it provides a way for black holes to conceptually traverse space-time. It is conceptually possible, so it does not mean that it is implemented. A black hole is the product of the collapse of a huge star due to extreme gravity, which prevents light particles from leaving those surfaces, making it almost invisible. The black hole is a one-way street and you can drop an object into a black hole, but you can not get out of that gravity. In the 1960s New Zealand mathematician Roy Cole says that singular points form a ring when the black hole is rotating.