General Relativity is a two part theory created by the German physicist, Albert Einstein. The two sections of relativity is special relativity and general relativity. Special relativity focuses more on lines, constant-velocity motion on the mass of objects, the passage throughout time, and that passing the speed of light is impossible. General relativity deals with accelerated motion, gravitational fields on mass, size, and time. General relativity also states that matter and space effect each other and that the universe ends and there may be more universes out there. Relativity also includes space-time. Many people think that space and time are completely different variables, but physicists often combine them into “space-time”. Space-time is a four-dimensional coordinate system used in relativity and other areas of physics. The dimensions are, length, width, height, and the 4th is the time dimension.
In Einstein’s curved-space-time universe, things are far more flexible. You always move into the future, traveling through time second by second, but not able to go through any faster. It is still called time travel because to move through time. It is called moving on a time-like curve through space-time. If the curve becomes too large, it loops in, causing time loops and becoming a closed time-like curve. Such phenomena is predicted by the Theory of General Relativity, that time will “loop”, resulting in a person to relive a certain part of his/her live over and over. This is
how Einstein perceived time travel to be like. It is considered impossible to warp space-time so severely that a closed time-like curve would be created. The only way that this would be able to exist was if we could get negative energy, which is impossible to obtain.
The effect of time dilation in a black hole is caused due to the movement from a high gravitational force to a lower gravitational force. Even though this is predicted by the theory of relativity, it remains impossible to prove and test since people cannot go in and out of a black hole at will. However, since time is...