there is no scientific evidence or theoretical framework to support the possibility of sending signals or information through time, including radio waves or any other form of communication. Time travel, particularly to the past, remains purely speculative and is not currently within the realm of scientific understanding.
The concept of time travel involves complex theories from physics, such as general relativity and quantum mechanics. While these theories allow for scenarios such as time dilation and the possibility of traveling to the future under specific conditions, they do not provide a framework for sending signals or information back in time.
Furthermore, sending signals through time would introduce significant challenges and paradoxes. One notable example is the "grandfather paradox," where a person travels back in time and does something that prevents their own existence or alters the course of events in a way that contradicts the initial conditions. Resolving such paradoxes remains a subject of speculation and debate.
It is important to distinguish between science fiction concepts and the current scientific understanding of time and its properties. At present, time travel, particularly with regard to sending signals, remains purely speculative and is not supported by scientific evidence or consensus.