time travel, as commonly understood and depicted in science fiction, has not been proven to exist or achieved in practice. The concept of time travel involves moving between different points in time, either backward or forward, outside the normal flow of time experienced by an observer.
In physics, there are theoretical frameworks like general relativity that allow for the possibility of certain scenarios where time dilation occurs. Time dilation refers to the stretching or slowing down of time in the presence of strong gravitational fields or when traveling at very high speeds. However, these effects primarily relate to the relative perception of time between different observers and do not enable traditional notions of time travel where one can freely navigate to specific points in the past or future.
Regarding the idea of reverse-time travel, going back in time to witness events that occurred before you were born, it falls into the realm of speculative scenarios. As mentioned earlier, time travel is currently theoretical, and there is no scientific evidence or consensus on the practicality of reverse-time travel.
It's essential to note that our understanding of time and the laws of physics is continuously evolving. Future scientific advancements may lead to new insights or discoveries that could reshape our understanding of time and the possibilities of time travel. However, at present, time travel remains a subject of scientific exploration, imagination, and ongoing theoretical investigation.