According to our current understanding of physics, specifically the theory of relativity, traveling back in time is not currently considered possible, regardless of whether it is in space or any other context. The concept of time travel, as commonly depicted in science fiction, involves moving backward in time to a previous point in history. However, there are significant scientific and theoretical challenges associated with achieving such travel.
The theory of relativity, developed by Albert Einstein, describes the relationships between space and time, including the effects of gravity and relative motion. It establishes that time is relative and can be influenced by factors such as velocity and gravitational fields. However, while time dilation effects have been observed and measured in experiments involving high speeds or intense gravitational fields, they do not provide a mechanism for traveling backward in time.
Currently, the scientific consensus is that traveling back in time, whether in space or otherwise, violates our understanding of the laws of physics as we currently know them. The fundamental principles of causality and the arrow of time, which states that events occur in a particular chronological order, are deeply ingrained in our understanding of the universe.
It's worth noting that there are ongoing scientific investigations and theoretical explorations in areas such as wormholes, exotic matter, and other advanced concepts that may potentially shed new light on the subject of time travel. However, at present, time travel to the past remains purely speculative and not supported by any empirical evidence or established scientific theories.