According to our current understanding of physics, it is not possible for any object with mass to travel faster than the speed of light in a vacuum. As an object with mass approaches the speed of light, its relativistic mass increases, requiring an infinite amount of energy to reach or exceed that speed.
However, if we were to hypothetically consider a scenario where an object could travel faster than light, it would have profound implications for causality and the flow of time as we currently understand it.
In Einstein's theory of relativity, the concept of causality is intimately connected to the speed of light. Events that are causally connected, meaning one event can affect the outcome of another, are constrained by the speed of light. Information and influences can only propagate at or below the speed of light, creating a cause-and-effect relationship within a light-cone.
If an object were to travel faster than light, it would effectively break this fundamental limit. It would mean that information or influences from the object's future could reach us before they were even created, which could lead to logical paradoxes and violations of causality as we currently understand it.
Given this, it is difficult to predict what we would see or experience if we were to travel faster than light. It's possible that we might not see anything coherent or recognizable, as the fundamental laws of physics as we know them would likely break down under such conditions.
It's worth noting that faster-than-light travel remains purely speculative and is not currently supported by any scientific evidence or theories.