According to our current understanding of physics, it is not possible for any object or information to travel faster than the speed of light. The theory of relativity, which is a well-established and extensively tested scientific framework, predicts that the speed of light in a vacuum is an absolute speed limit in the universe. As an object with mass approaches the speed of light, its relativistic mass becomes infinite, and it would require an infinite amount of energy to accelerate it to or beyond that speed.
Furthermore, the theory of relativity also predicts that as an object approaches the speed of light, time dilation occurs. Time dilation means that time appears to pass more slowly for the object in motion relative to an observer at rest. This effect becomes more pronounced as the object's velocity approaches the speed of light. Consequently, for an observer on the object, time would slow down, and they would experience a different passage of time compared to an observer at rest.
With this in mind, if an object were somehow able to travel faster than light and then turn around and return, the implications of time dilation would be significant. Time dilation would cause the traveler to experience time differently than an observer at rest. However, it is important to note that our current understanding of physics does not allow for such scenarios to occur.
The concept of traveling faster than light and its associated consequences fall into the realm of speculative physics and science fiction. While it can be interesting to explore these ideas imaginatively, they do not align with our current scientific knowledge and theories.