There is one place in the universe where time travels backward. That place is the black hole. In the place where the escaping velocity turns higher than the speed of light, the time moves backward. The reason for that is the time dilation. When a particle travels with the speed of light that stops the time on its surface. When the escaping velocity turns higher than the speed of light that gravitational effect pulls the particles with the speed that crosses the speed of light. The term event horizon means the point where the escaping velocity is turning higher than the speed of light. The name event horizon is given to that point because we cannot get observations beyond that point where even the light cannot escape from that area. And logically when the speed of light is crossing that thing causes that time to start to move backward. The time dilation is directly proportional to the speed and escaping velocity. That means the time must move backward beyond the event horizon. The fac