The concept of thinking about time in a similar way as we think about space is known as "spacetime," which is a fundamental concept in physics. In the theory of general relativity, proposed by Albert Einstein, spacetime is a unified four-dimensional framework that combines space and time into a single entity. According to this theory, objects with mass or energy can cause spacetime to curve, resulting in what we perceive as the force of gravity.
In this framework, it is possible to think of time as another dimension, similar to the three dimensions of space. Just as we can move through space in different directions, the theory of general relativity suggests that it might be possible to move through time in a similar manner. This idea forms the basis for the theoretical possibility of time travel.
However, it's important to note that time travel is a topic of ongoing scientific and philosophical debate, and there is currently no consensus on its feasibility. While the mathematics of general relativity allows for solutions that permit time travel, they often involve conditions that are highly unlikely or require exotic forms of matter with unusual properties.
Additionally, there are several theoretical and practical challenges associated with time travel, including paradoxes such as the grandfather paradox (where you could potentially go back in time and prevent your own existence) and the causality problem (where the cause and effect relationship becomes muddled).
Until now, there is no experimental evidence to confirm the existence of time travel, and we have not discovered any natural phenomena that can be definitively identified as time travel. As our understanding of physics evolves, our insights into the nature of time may also change, but currently, time travel remains speculative and primarily explored within the realms of science fiction.