The Question of Time Travel: Is It Possible or Impossible Based on Scientific Principles and the Physical Laws of the Universe?

Based on our current understanding of the laws of physics, time travel to the past is currently considered impossible. The concept of time travel involves moving through time faster or slower than the normal rate of time. However, according to the theory of relativity developed by Albert Einstein, time is not absolute but rather relative to an observer's relative speed and the strength of the gravitational field they are in. This means that time can be affected by the speed and gravitational potential of an object. However, the laws of physics currently do not permit a person or object to move through time faster than the speed of light, which is considered to be the absolute speed limit of the universe. Therefore, it is impossible to travel backwards in time. Additionally, the laws of physics as we understand them do not allow for the existence of closed timelike curves, which are spacetime paths that allow for time travel into the past without violating the laws of causality. The laws of causality dictate that an effect cannot occur before its cause, which would be violated by backwards time travel. In summary, based on our current understanding of physics, time travel to the past is impossible. However, time travel to the future is theoretically possible through the effects of time dilation, whereby time appears to slow down for an object moving at high speeds relative to a stationary observer. Sources: - "The Time Travel Paradox" by Brian Koberline, published in Physics Today - "Time Travel: Theories, Paradoxes & Possibilities" by Elizabeth Landau, published on Space.com - "The Physics of Time Travel" by Michio Kaku, published on Big Think.