07-29-2024, 11:57 PM
Time travel is theoretically possible, but only into the future. This is due to time dilation, which causes a person to experience time differently when they are exposed to high gravitational forces and/or high speeds. A perfect example is present all through Interstellar. When Coop goes down to the water planet, he is on the planet for a little over three hours from his perspective. However, from Earth-time perspective he was on the planet for over 23 years. He has effectively time traveled and this is accurate according to our current understanding of astrophysics.
