The portrayal of time travel in popular culture, such as in Doctor Who or The Time Machine, often involves fictional and speculative elements that go beyond our current scientific understanding. While they provide creative and entertaining narratives, it's important to note that they are works of fiction.
In reality, the concept of time travel is still purely theoretical, and scientists have not discovered a method that would allow us to travel through time in a way depicted in those stories. Time travel is an active subject of study in physics, and various theories and possibilities have been proposed, but none have been experimentally confirmed or widely accepted.
In some scientific theories, such as general relativity, the existence of wormholes or the manipulation of certain cosmic structures like black holes has been suggested as potential mechanisms for time travel. However, these ideas remain highly speculative and hypothetical at this point.
It's worth emphasizing that our current understanding of physics and the laws of nature does not provide a clear and practical path for time travel as portrayed in science fiction. The topic continues to be the subject of scientific exploration and debate, and it will likely require significant advancements in our understanding of fundamental physics before we can determine the true nature and feasibility of time travel, if it is indeed possible.